阅读说明：本技术 一种玉米籽粒内部组分密度测量方法及系统 (Method and system for measuring density of internal components of corn grains ) 是由 刘双喜 江浩 王金星 李玉风 刘雪梅 慕君林 徐春保 于 2020-05-22 设计创作，主要内容包括：本申请公开了一种玉米籽粒内部组分密度测量方法及系统,分别确定多粒玉米籽粒的单粒质量和单粒体积；将所述多粒玉米籽粒泡发后按照预设厚度进行切片获得玉米籽粒切片；确定每片所述玉米籽粒切片中角质胚乳、粉质胚乳和胚部对应的体积；根据多粒所述玉米籽粒确定出的所述角质胚乳、粉质胚乳和胚部对应的体积和所述粒玉米籽粒的单粒质量确定所述角质胚乳、粉质胚乳和胚部的密度。根据获得的每个玉米籽粒中角质胚乳、粉质胚乳和胚部的体积,结合每个玉米籽粒的重量,确定出角质胚乳、粉质胚乳和胚部的密度。有利于深入研究玉米籽粒内部立体结构以及不同部位密度差异对干燥裂纹的影响,对干燥玉米品质和干燥参数选择具有重要的指导作用和科学意义。(The application discloses a method and a system for measuring the density of components in corn kernels, which respectively determine the single grain mass and the single grain volume of a plurality of corn kernels; soaking the multiple corn kernels, and slicing according to a preset thickness to obtain corn kernel slices; determining the volumes of cutin endosperm, floury endosperm and embryo part in each slice of the corn kernel; and determining the density of the cutin endosperm, the floury endosperm and the embryo part according to the corresponding volume of the cutin endosperm, the floury endosperm and the embryo part determined by the plurality of corn grains and the single grain mass of the corn grains. And determining the density of the cutin endosperm, the floury endosperm and the embryo part according to the obtained volume of the cutin endosperm, the floury endosperm and the embryo part in each corn kernel and the weight of each corn kernel. The method is favorable for deeply researching the influence of the internal three-dimensional structure of the corn kernels and the density difference of different parts on the drying cracks, and has important guiding function and scientific significance for the quality of the dried corn and the selection of the drying parameters.)

1. A method for measuring the density of components in corn kernels is characterized by comprising the following steps:

respectively determining the single grain mass and the single grain volume of a plurality of corn grains;

soaking the multiple corn kernels, and slicing according to a preset thickness to obtain corn kernel slices;

determining the volumes of cutin endosperm, floury endosperm and embryo part in each slice of the corn kernel;

and determining the density of the cutin endosperm, the floury endosperm and the embryo part according to the corresponding volume of the cutin endosperm, the floury endosperm and the embryo part determined by the plurality of corn grains and the single grain mass of the corn grains.

2. The method for measuring the density of components inside corn kernels according to claim 1, wherein the separately determining the individual particle mass and the individual particle volume of a plurality of corn kernels comprises:

selecting multiple corn kernels of the same variety to be weighed for multiple times respectively, and taking the tie value of multiple weighing results of a first corn kernel as the single kernel mass of the first corn kernel, wherein the first corn kernel is any one of the multiple corn kernels;

putting the first corn kernel into a measuring cylinder filled with a tea water solution, carrying out image acquisition on the liquid level of the measuring cylinder before and after the first corn kernel is put into the measuring cylinder through a high-precision camera, and determining an image of a liquid level change part of the measuring cylinder according to the acquired image information; and determining the single-seed volume of the first corn seed according to the actual volume corresponding to the single pixel point in the image and the number of pixels contained in the image of the liquid level change part.

3. The method for measuring the density of components inside corn kernels according to claim 1, wherein the step of slicing the multiple corn kernels according to a preset thickness after soaking the multiple corn kernels to obtain corn kernel slices comprises the following steps:

soaking the corn seeds in water for a preset time period;

and slicing the soaked corn kernels according to a preset thickness to obtain the corn kernel slices.

4. The method of measuring density of components inside a corn kernel as claimed in claim 1, wherein said determining the corresponding volume of horny endosperm, floury endosperm and embryo in each slice of said corn kernel comprises:

placing the corn kernel slices into a drying environment for natural drying, and when the sum of the mass of all the corn kernel slices corresponding to a first corn kernel is equal to the mass of the first corn kernel, carrying out image acquisition on the section of each corn kernel slice, wherein the first corn kernel is any one of a plurality of corn kernels;

segmenting according to the overlapping area of the pixel points in the image to obtain the image areas of the cuticle endosperm, the floury endosperm and the embryo;

obtaining pixel points corresponding to the image areas of the cutin endosperm, the floury endosperm and the embryo part and an image nep corresponding to each pixel point to determine the area of each part;

and determining the volumes of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice according to the area of each part and the thickness of the corn kernel slice.

5. The method for measuring the density of components inside a corn kernel according to claim 1, wherein the determining the density of the horny endosperm, floury endosperm and embryo part according to the corresponding volumes of the horny endosperm, floury endosperm and embryo part determined by a plurality of corn kernels and the single quality of the corn kernel comprises:

respectively adding the volumes corresponding to the cutin endosperm, the floury endosperm and the embryo part in all the corn kernel slices of a first corn kernel to obtain the cutin endosperm volume, the floury endosperm volume and the embryo part volume of the first corn kernel, wherein the first corn kernel is any one of the corn kernels;

obtaining the density of the cutin endosperm, the floury endosperm and the embryo part according to the cutin endosperm volume, the floury endosperm volume and the embryo part volume of each of the plurality of corn kernels and the corresponding single grain mass.

6. A corn kernel internal component density measurement system, the system comprising:

the determining module is used for respectively determining the single grain mass and the single grain volume of a plurality of corn grains;

the acquisition module is used for soaking the multiple corn kernels and then slicing the multiple corn kernels according to a preset thickness to obtain corn kernel slices;

a volume determination module for determining the volume of the cornified endosperm, the floury endosperm and the embryo part in each slice of the corn kernel;

and the density determining module is used for determining the densities of the horny endosperm, the floury endosperm and the embryo part according to the volumes corresponding to the horny endosperm, the floury endosperm and the embryo part determined by the plurality of corn grains and the single-grain mass of the corn grains.

7. The corn kernel internal component density measurement system of claim 6, wherein the determination module comprises:

the corn kernel quality determining unit is used for selecting a plurality of corn kernels of the same variety to be respectively weighed for a plurality of times, taking the tie value of the result of the plurality of times of weighing of the first corn kernel as the single kernel quality of the first corn kernel, wherein the first corn kernel is any one of the plurality of corn kernels;

the corn kernel volume determining unit is used for placing the first corn kernel into a measuring cylinder filled with a tea water solution, carrying out image acquisition on the liquid level of the measuring cylinder before and after the first corn kernel is placed into the measuring cylinder through a high-precision camera, and determining an image of a liquid level change part of the measuring cylinder according to the acquired image information; and determining the single-seed volume of the first corn seed according to the actual volume corresponding to the single pixel point in the image and the number of pixels contained in the image of the liquid level change part.

8. The corn kernel internal component density measurement system of claim 6, wherein the acquisition module comprises:

the pretreatment unit is used for soaking the corn seeds in water for a preset time period;

the first acquisition unit is used for slicing the soaked corn kernels according to a preset thickness to obtain the corn kernel slices.

9. The corn kernel internal component density measurement system of claim 6, wherein the volume determination module comprises:

the image acquisition unit is used for placing the corn kernel slices into a dry environment for natural drying, and when the sum of the quality of all the corn kernel slices corresponding to a first corn kernel is equal to the quality of the first corn kernel, performing image acquisition on the section of each corn kernel slice, wherein the first corn kernel is any one of a plurality of corn kernels;

the second acquisition unit is used for segmenting according to the overlapping area of the pixel points in the image to acquire the image areas of the cuticle endosperm, the floury endosperm and the embryo;

a third obtaining unit, configured to obtain pixel points corresponding to image areas of the cuticle endosperm, the floury endosperm and the embryo part, and an area of each part determined by an image nep corresponding to each pixel point;

and the volume determining unit is used for determining the corresponding volume of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice according to the area of each part and the thickness of the corn kernel slice.

10. The corn kernel internal component density measurement system of claim 6, wherein the density determination module comprises:

a fourth obtaining unit, configured to add volumes corresponding to the cutin endosperm, the floury endosperm, and the embryo in all corn kernel slices of a first corn kernel to obtain a cutin endosperm volume, a floury endosperm volume, and an embryo volume of the first corn kernel, where the first corn kernel is any one of the corn kernels;

and the density acquisition unit is used for acquiring the densities of the cutin endosperm, the floury endosperm and the embryo part according to the respective cutin endosperm volume, the floury endosperm volume and the embryo part volume of the plurality of corn kernels and the corresponding single grain mass.

Technical Field

The application relates to the technical field of grain density measurement, in particular to a method and a system for measuring density of components in corn kernels.

Background

Corn is currently one of the most important crops in the world, and the planting area and the yield of the corn are second to those of rice and wheat. Corn is not only an important grain crop, provides various foods for people, but also is the most important raw material in animal feed, and is also a main industrial raw material for producing alcohol and starch.

The corn endosperm part is divided into cutin endosperm and floury endosperm, the cutin endosperm is semitransparent, the space between starch granules is filled with protein, and the tissue is compact. The floury endosperm is opaque, has low protein content, is not tightly combined with starch granules, and has loose structure. The cornified corn is suitable for human eating and poultry feed processing, while the mealy corn is widely used for producing alcohol, starch and livestock feed processing. The actual density of the cornified endosperm, the floury endosperm and the embryo part inside the corn kernel is obtained, the method is pertinently applied to production and life, the optimal utilization of the corn is facilitated, the quality of the corn in the transportation and storage processes is fully realized, the use value of the corn is related to the three-dimensional structure and the internal distribution of the corn kernel, and the density of the cornified endosperm, the floury endosperm and the embryo part is included

Therefore, how to obtain the actual density of the cornkernel inner cutin endosperm, the floury endosperm and the embryo part is a technical problem to be solved urgently in the field.

Disclosure of Invention

In order to solve the technical problems, the following technical scheme is provided:

in a first aspect, the embodiment of the present application provides a method for measuring density of components inside a corn kernel, the method includes: respectively determining the single grain mass and the single grain volume of a plurality of corn grains; soaking the multiple corn kernels, and slicing according to a preset thickness to obtain corn kernel slices; determining the volumes of cutin endosperm, floury endosperm and embryo part in each slice of the corn kernel; and determining the density of the cutin endosperm, the floury endosperm and the embryo part according to the corresponding volume of the cutin endosperm, the floury endosperm and the embryo part determined by the plurality of corn grains and the single grain mass of the corn grains.

By adopting the implementation mode, the volumes of the horny endosperm, the floury endosperm and the embryo part in each corn kernel are respectively obtained, and the densities of the horny endosperm, the floury endosperm and the embryo part are determined by combining the weight of each corn kernel. The method is favorable for deeply researching the influence of the internal three-dimensional structure of the corn kernels and the density difference of different parts on the drying cracks, and has important guiding function and scientific significance for the quality of the dried corn and the selection of the drying parameters.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the separately determining the single-grain mass and the single-grain volume of the multiple corn kernels includes: selecting multiple corn kernels of the same variety to be weighed for multiple times respectively, and taking the tie value of multiple weighing results of a first corn kernel as the single kernel mass of the first corn kernel, wherein the first corn kernel is any one of the multiple corn kernels; putting the first corn kernel into a measuring cylinder filled with a tea water solution, carrying out image acquisition on the liquid level of the measuring cylinder before and after the first corn kernel is put into the measuring cylinder through a high-precision camera, and determining an image of a liquid level change part of the measuring cylinder according to the acquired image information; and determining the single-seed volume of the first corn seed according to the actual volume corresponding to the single pixel point in the image and the number of pixels contained in the image of the liquid level change part.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the slicing multiple corn kernels according to a preset thickness after soaking the multiple corn kernels to obtain corn kernel slices includes: soaking the corn seeds in water for a preset time period; and slicing the soaked corn kernels according to a preset thickness to obtain the corn kernel slices.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the determining the corresponding volumes of the horny endosperm, the floury endosperm and the embryo part in each slice of the corn kernel includes: placing the corn kernel slices into a drying environment for natural drying, and when the sum of the mass of all the corn kernel slices corresponding to a first corn kernel is equal to the mass of the first corn kernel, carrying out image acquisition on the section of each corn kernel slice, wherein the first corn kernel is any one of a plurality of corn kernels; segmenting according to the overlapping area of the pixel points in the image to obtain the image areas of the cuticle endosperm, the floury endosperm and the embryo; obtaining pixel points corresponding to the image areas of the cutin endosperm, the floury endosperm and the embryo part and an image nep corresponding to each pixel point to determine the area of each part; and determining the volumes of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice according to the area of each part and the thickness of the corn kernel slice.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the determining the densities of the horny endosperm, the floury endosperm and the embryo portion according to the volumes, corresponding to the horny endosperm, the floury endosperm and the embryo portion, of the multiple corn kernels and the single quality of the corn kernels includes: respectively adding the volumes corresponding to the cutin endosperm, the floury endosperm and the embryo part in all the corn kernel slices of a first corn kernel to obtain the cutin endosperm volume, the floury endosperm volume and the embryo part volume of the first corn kernel, wherein the first corn kernel is any one of the corn kernels; obtaining the density of the cutin endosperm, the floury endosperm and the embryo part according to the cutin endosperm volume, the floury endosperm volume and the embryo part volume of each of the plurality of corn kernels and the corresponding single grain mass.

In a second aspect, the present application provides a system for measuring density of components inside a corn kernel, the system including: the determining module is used for respectively determining the single grain mass and the single grain volume of a plurality of corn grains; the acquisition module is used for soaking the multiple corn kernels and then slicing the multiple corn kernels according to a preset thickness to obtain corn kernel slices; a volume determination module for determining the volume of the cornified endosperm, the floury endosperm and the embryo part in each slice of the corn kernel; and the density determining module is used for determining the densities of the horny endosperm, the floury endosperm and the embryo part according to the volumes corresponding to the horny endosperm, the floury endosperm and the embryo part determined by the plurality of corn grains and the single-grain mass of the corn grains.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the determining module includes: the corn kernel quality determining unit is used for selecting a plurality of corn kernels of the same variety to be respectively weighed for a plurality of times, taking the tie value of the result of the plurality of times of weighing of the first corn kernel as the single kernel quality of the first corn kernel, wherein the first corn kernel is any one of the plurality of corn kernels; the corn kernel volume determining unit is used for placing the first corn kernel into a measuring cylinder filled with a tea water solution, carrying out image acquisition on the liquid level of the measuring cylinder before and after the first corn kernel is placed into the measuring cylinder through a high-precision camera, and determining an image of a liquid level change part of the measuring cylinder according to the acquired image information; and determining the single-seed volume of the first corn seed according to the actual volume corresponding to the single pixel point in the image and the number of pixels contained in the image of the liquid level change part.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the obtaining module includes: the pretreatment unit is used for soaking the corn seeds in water for a preset time period; the first acquisition unit is used for slicing the soaked corn kernels according to a preset thickness to obtain the corn kernel slices.

With reference to the second aspect, in a third possible implementation manner of the second aspect, the volume determination module includes: the image acquisition unit is used for placing the corn kernel slices into a dry environment for natural drying, and when the sum of the quality of all the corn kernel slices corresponding to a first corn kernel is equal to the quality of the first corn kernel, performing image acquisition on the section of each corn kernel slice, wherein the first corn kernel is any one of a plurality of corn kernels; the second acquisition unit is used for segmenting according to the overlapping area of the pixel points in the image to acquire the image areas of the cuticle endosperm, the floury endosperm and the embryo; a third obtaining unit, configured to obtain pixel points corresponding to image areas of the cuticle endosperm, the floury endosperm and the embryo part, and an area of each part determined by an image nep corresponding to each pixel point; and the volume determining unit is used for determining the corresponding volume of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice according to the area of each part and the thickness of the corn kernel slice.

With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the determining the density of the horny endosperm, the floury endosperm and the embryo portion according to the volumes of the horny endosperm, the floury endosperm and the embryo portion determined by the multiple corn kernels and the single-grain mass of the corn kernels includes: a fourth obtaining unit, configured to add volumes corresponding to the cutin endosperm, the floury endosperm, and the embryo in all corn kernel slices of a first corn kernel to obtain a cutin endosperm volume, a floury endosperm volume, and an embryo volume of the first corn kernel, where the first corn kernel is any one of the corn kernels; and the density acquisition unit is used for acquiring the densities of the cutin endosperm, the floury endosperm and the embryo part according to the respective cutin endosperm volume, the floury endosperm volume and the embryo part volume of the plurality of corn kernels and the corresponding single grain mass.

In a third aspect, an embodiment of the present application provides a device for measuring density of components inside corn kernels, including: a processor; a memory for storing computer executable instructions; when the processor executes the computer-executable instructions, the processor executes any one of the above-mentioned possible corn kernel internal component density measurement methods of the first aspect or the first aspect to obtain the densities of the horny endosperm, the floury endosperm and the embryo part inside the corn kernel.

Drawings

Fig. 1 is a schematic flow chart of a method for measuring density of components inside corn kernels according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a corn kernel after slicing;

fig. 3 is a schematic diagram of a system for measuring density of components inside corn kernels according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a device for measuring density of components inside corn kernels according to an embodiment of the present disclosure.

Detailed Description

The present invention will be described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic flow chart of a method for measuring density of components inside corn kernels according to an embodiment of the present application, and referring to fig. 1, the method includes:

s101, respectively determining the single grain mass and the single grain volume of a plurality of corn grains.

Selecting multiple corn kernels of the same variety to be weighed for multiple times respectively, and taking the average value of multiple weighing results of a first corn kernel as the single kernel mass of the first corn kernel, wherein the first corn kernel is any one of the multiple corn kernels.

Because the densities of all parts of the corn kernels of the same variety are the same, a plurality of corn kernels are selected from the variety to be measured for measurement. And (3) accurately measuring the single grain mass of a plurality of corn grain samples respectively by using an electronic analytical balance with one ten thousandth precision. Before weighing, the horizontal adjusting feet on the left side and the right side of the bottom of the electronic balance are adjusted to ensure that the horizontal bubbles are located at the central position. And (4) after starting the machine and preheating for 1 hour, selecting 100g of standard weight for calibration, and weighing after the calibration is finished. In order to avoid errors, the same corn kernel is weighed for multiple times, and the average value of the multiple weighing results is taken as the quality of the corn kernel;

putting the first corn kernel into a measuring cylinder filled with a tea water solution, carrying out image acquisition on the liquid level of the measuring cylinder before and after the first corn kernel is put into the measuring cylinder through a high-precision camera, and determining an image of a liquid level change part of the measuring cylinder according to the acquired image information; and determining the single-seed volume of the first corn seed according to the actual volume corresponding to the single pixel point in the image and the number of pixels contained in the image of the liquid level change part.

The volume of a plurality of corn grains is measured by using a single grain volume liquid discharge method, and a standard glass measuring cylinder with the cylinder diameter of 13mm, the measuring range of 5ml and the accuracy of 0.1ml is selected as a volume measuring container. During measurement, the tea water solution obtained by filtering is added into the measuring cylinder, the illumination environment is adjusted, and the effect of the liquid level change part is enhanced. And (3) acquiring image information of the measuring cylinder by using a high-precision camera to calibrate the volume, and determining the actual volume of the measuring cylinder represented by a single pixel point in the image.

The method for measuring through machine vision can avoid the problems of high labor intensity, low operation efficiency, strong subjectivity, easy error and the like of a manual measuring method, and the existing research shows that the measuring precision is high and the measuring result is accurate. The grain volume drainage method is to determine the volume of irregular grains according to the volume of liquid drained after the tested grains are added. During measurement, the tea water solution obtained by filtering is added into the measuring cylinder, the illumination environment is adjusted, and the effect of the liquid level change part is enhanced. And (3) acquiring image information of the measuring cylinder by using a high-precision camera to calibrate the volume, and determining the actual volume of the measuring cylinder represented by a single pixel point in the image. The method comprises the steps of collecting liquid level images of corn kernels before and after the corn kernels are immersed in a measuring cylinder by a camera, extracting images of liquid level change parts by using an image processing technology, counting the number of pixels contained in the height of the parts of the images, and determining the volume of a single corn seed by combining a volume calibration result.

S102, soaking and foaming the multiple corn kernels, and slicing the multiple corn kernels according to a preset thickness to obtain corn kernel slices.

And soaking the corn kernels in water for a preset time period. And slicing the soaked corn kernels according to a preset thickness to obtain the corn kernel slices.

Specifically, a plurality of corn kernels are placed in the same cup of water to be soaked for 24 hours, the soaked corn kernels are respectively sliced according to the same thickness and fixed thickness, the slices are placed in a dry place, and the corn kernel slices obtained after slicing are shown in fig. 2.

S103, determining the corresponding volumes of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice.

And putting the corn kernel slices into a drying environment for natural drying, and when the sum of the quality of all the corn kernel slices corresponding to a first corn kernel is equal to the quality of the first corn kernel, carrying out image acquisition on the section of each corn kernel slice, wherein the first corn kernel is any one of a plurality of corn kernels.

And when the sum of the quality of all the slices is the same as the quality of the single-kernel corn grains obtained by the previous measurement, taking out the slices for image acquisition. Determining key equipment such as a camera, a lens, a light source, a lens and a corn placing device required by image acquisition, building a machine vision system, and setting calibration in an acquisition device of the machine vision system to acquire images. The corn kernel slice contains horny endosperm, floury endosperm and embryo. The penetration effect of the corncutin endosperm part and the floury endosperm part on the transmitted light is inconsistent, the light flux of the corncutin endosperm part is high, and the light flux of the floury endosperm part is low, so that the shadow of the floury region is formed. The cold white light with different intensities has inconsistent effect of penetrating through the corn kernels, the light intensity needs to be selected, and the optimal light intensity is determined through actual comparison. And acquiring a section image of the corn kernel slice under the determined optimal light intensity.

And segmenting according to the overlapping area of the pixel points in the image to obtain the image areas of the cutin endosperm, the floury endosperm and the embryo.

Specifically, a precise segmentation algorithm is adopted to segment a corn kernel section picture, and the floury endosperm, the horny endosperm and the embryo part areas in the section are respectively obtained. The method comprises the steps of performing multi-channel threshold segmentation on a low-contrast color image to obtain binary images A and B containing an overlapped region, scanning the binary images A and B line by line simultaneously, and comparing information of corresponding pixel points of the two images; a and B are all the sets formed by the pixel points with the same information, namely the overlapping areas of the two images; and the pixel point sets with different pixel information are non-overlapping areas of the two images. If desired, after the two images have been completely scanned, the overlapping or non-overlapping regions of the two images are extracted.

And obtaining pixel points corresponding to the image areas of the cutin endosperm, the floury endosperm and the embryo part and an image nep corresponding to each pixel point to determine the area of each part.

Specifically, firstly, a 'floury endosperm + embryo part' image is segmented and extracted under an R channel, and a cutin endosperm image is obtained by a multi-channel overlapping region method; and then converting the image of the powdery endosperm and the embryo part from the RGB color space to the Lab color space, segmenting and extracting the image of the powdery endosperm under a b channel with an obvious target, and obtaining the embryo part image by adopting a multi-channel overlapping region method. And counting the pixel numbers of the horny endosperm, the floury endosperm and the embryo part in the obtained corn kernel, and calculating the areas of the horny endosperm, the floury endosperm and the embryo part in the corn kernel according to the calibrated pixel numbers and areas.

And determining the volumes of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice according to the area of each part and the thickness of the corn kernel slice.

The corn kernel adopts slices with fixed thickness, the thickness of each slice is the same, the areas of horny endosperm, floury endosperm and embryo part in the slice and the slice thickness are obtained according to calculation, the volumes of the three parts in the slice are obtained through calculation, and the volumes of the three parts of all slices of the same corn kernel are correspondingly added to obtain the respective volumes of the three parts in the single corn kernel.

Assuming that each corn kernel is divided into 7 pieces during slicing, taking horny endosperm as an example, the areas of the horny endosperm in the 7 corn kernel slices of the corn kernel are respectively S1, S2, S3, S4, S5, S6 and S7 in S103, and the slice thickness H is preset and known, the volumes of the horny endosperm in the 7 corn kernel slices are v11 ═ Hs1, v12 ═ Hs2, v13 ═ Hs3, v14 ═ Hs4, v15 ═ Hs5, v16 ═ Hs6 and v17 ═ Hs7, and the volumes of the floury endosperm and the embryo part in the 7 corn kernel slices of the corn kernel are determined similarly.

S104, determining the density of the horny endosperm, the floury endosperm and the embryo part according to the corresponding volume of the horny endosperm, the floury endosperm and the embryo part determined by a plurality of corn grains and the single grain mass of the corn grains.

Adding the volumes corresponding to the cutin endosperm, the floury endosperm and the embryo part in all the corn kernel slices of a first corn kernel respectively to obtain the cutin endosperm volume, the floury endosperm volume and the embryo part volume of the first corn kernel, wherein the first corn kernel is any one of the corn kernels. Obtaining the density of the cutin endosperm, the floury endosperm and the embryo part according to the cutin endosperm volume, the floury endosperm volume and the embryo part volume of each of the plurality of corn kernels and the corresponding single grain mass.

Because the densities of all parts in the corns of the same variety are the same, the densities of the cutin endosperm, the floury endosperm and the embryo part in the corn seeds of the variety are calculated according to the measured mass of the multiple corn seeds and the volumes of the cutin endosperm, the floury endosperm and the embryo part in the multiple corn seeds.

Having determined the volume of the horny endosperm, floury endosperm and embryo portion in each corn kernel slice in S103, the volume of the horny endosperm, floury endosperm and embryo portion in each corn kernel can be determined.

Assuming that n corn kernels are used in this example, the first corn kernel has a cuticle-endosperm volume of V₁₁V11+ V12+ V13+ V14+ V15+ V16+ V17, and the volume of the floury endosperm and the embryo of the first corn kernel is V₁₂And V₁₃The volumes of horny endosperm, floury endosperm and embryo in the second corn kernel are V₂₁、V₂₂And V₂₃… volume of horny endosperm, floury endosperm and embryo part of nth corn kernel are V_n1、V_n2And V_n3. Meanwhile, the densities of horny endosperm, floury endosperm and embryo part in corn kernels are respectively assumed to be rho₁、ρ₂And ρ₃The mass of the n corn kernels determined in S101 is M₁、M₂…M_n。

Then p can be determined by the following polynomial₁、ρ₂And ρ₃The numerical value of (c).

According to the embodiments, the method for measuring the density of the internal components of the corn kernels is provided, and the densities of the cutin endosperm, the floury endosperm and the embryo part are determined by respectively acquiring the volumes of the cutin endosperm, the floury endosperm and the embryo part in each corn kernel and combining the weight of each corn kernel. The method is favorable for deeply researching the influence of the internal three-dimensional structure of the corn kernels and the density difference of different parts on the drying cracks, and has important guiding function and scientific significance for the quality of the dried corn and the selection of the drying parameters.

Corresponding to the method for measuring the density of the components in the corn kernels provided by the embodiment, the application also provides an embodiment of a system for measuring the density of the components in the corn kernels. Referring to fig. 3, the system 20 for measuring the density of components inside corn kernels provided by the present embodiment includes: a determination module 201, an acquisition module 202, a volume determination module 203, and a density determination module 204.

The determining module 201 is configured to determine the single grain mass and the single grain volume of a plurality of corn grains, respectively. The determining module 201 comprises: the corn kernel quality determining unit and the corn kernel volume determining unit. The corn kernel quality determining unit is used for selecting multiple corn kernels of the same variety to be weighed for multiple times respectively, the tie value of the multiple weighing result of the first corn kernel is taken as the single kernel quality of the first corn kernel, and the first corn kernel is any one of the multiple corn kernels. The corn kernel volume determining unit is used for placing the first corn kernel into a measuring cylinder filled with a tea water solution, carrying out image acquisition on the liquid level of the measuring cylinder before and after the first corn kernel is placed into the measuring cylinder through a high-precision camera, and determining an image of a liquid level change part of the measuring cylinder according to the acquired image information; and determining the single-seed volume of the first corn seed according to the actual volume corresponding to the single pixel point in the image and the number of pixels contained in the image of the liquid level change part.

An obtaining module 202, configured to foam the multiple corn kernels, and then slice the multiple corn kernels according to a preset thickness to obtain corn kernel slices.

The obtaining module 202 includes: the device comprises a preprocessing unit and a first acquisition unit. And the pretreatment unit is used for soaking the corn kernels in water for a preset time period. The first acquisition unit is used for slicing the soaked corn kernels according to a preset thickness to obtain the corn kernel slices.

A volume determination module 203 for determining the volume of the horny endosperm, the floury endosperm and the embryo part in each slice of the corn kernel.

The volume determination module 203 comprises: the device comprises an image acquisition unit, a second acquisition unit, a third acquisition unit and a volume determination unit. The image acquisition unit is used for placing the corn kernel slices into a dry environment for natural drying, and when the sum of the quality of all the corn kernel slices corresponding to a first corn kernel is equal to the quality of the first corn kernel, performing image acquisition on the section of each corn kernel slice, wherein the first corn kernel is any one of a plurality of corn kernels. And the second acquisition unit is used for segmenting according to the overlapping area of the pixel points in the image to acquire the image areas of the cuticle endosperm, the floury endosperm and the embryo. And the third acquisition unit is used for acquiring pixel points corresponding to the image areas of the cutin endosperm, the floury endosperm and the embryo part and determining the area of each part by the image neps corresponding to each pixel point. And the volume determining unit is used for determining the corresponding volume of the horny endosperm, the floury endosperm and the embryo part in each corn kernel slice according to the area of each part and the thickness of the corn kernel slice.

A density determining module 204, configured to determine densities of the horny endosperm, the floury endosperm and the embryo according to the volumes of the horny endosperm, the floury endosperm and the embryo determined for the plurality of corn kernels and the single-grain mass of the corn kernels.

The density determination module 204 includes: a fourth acquisition unit and a density acquisition unit. And the fourth acquisition unit is used for respectively adding the volumes corresponding to the cutin endosperm, the floury endosperm and the embryo part in all the corn kernel slices of the first corn kernel to obtain the cutin endosperm volume, the floury endosperm volume and the embryo part volume of the first corn kernel, wherein the first corn kernel is any one of the corn kernels. And the density acquisition unit is used for acquiring the densities of the cutin endosperm, the floury endosperm and the embryo part according to the respective cutin endosperm volume, the floury endosperm volume and the embryo part volume of the plurality of corn kernels and the corresponding single grain mass.

The embodiment of the present application further provides a device 30 for measuring the density of the internal components of the corn kernel, referring to fig. 4, the device 30 for measuring the density of the internal components of the corn kernel includes: a processor 301, a memory 302, and a communication interface 303.

In fig. 4, the processor 301, the memory 302, and the communication interface 303 may be connected to each other by a bus; the bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.

The processor 301 generally controls the overall function of the corn kernel internal component density measurement device 30, for example, the corn kernel internal component density measurement device 30 is started, and after the corn kernel internal component density measurement device 30 is started, the single grain mass and the single grain volume of a plurality of corn kernels are respectively determined; soaking the multiple corn kernels, and slicing according to a preset thickness to obtain corn kernel slices; determining the volumes of cutin endosperm, floury endosperm and embryo part in each slice of the corn kernel; and determining the density of the cutin endosperm, the floury endosperm, the embryo part and the like according to the corresponding volumes of the cutin endosperm, the floury endosperm and the embryo part determined by the plurality of corn grains and the single grain mass of the corn grains.

Further, the processor 301 may be a general-purpose processor, such as a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. The processor may also be a Microprocessor (MCU). The processor may also include a hardware chip. The hardware chips may be Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), or the like.

The memory 302 is configured to store computer executable instructions to support the operation of the corn kernel internal component density measurement device 30 data. The memory 301 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

After the device 30 for measuring the density of the internal components of the corn kernel is started, the processor 301 and the memory 302 are powered on, and the processor 301 reads and executes the computer executable instructions stored in the memory 302 to complete all or part of the steps in the embodiment of the method for measuring the density of the internal components of the corn kernel.

The communication interface 303 is used for transmitting data of the corn kernel internal component density measurement device 30, for example, data communication with an image acquisition device, an image processing device, and the like is realized. The communication interface 303 includes a wired communication interface, and may also include a wireless communication interface. The wired communication interface comprises a USB interface, a Micro USB interface and an Ethernet interface. The wireless communication interface may be a WLAN interface, a cellular network communication interface, a combination thereof, or the like.

In an exemplary embodiment, the corn kernel internal component density measurement device 30 provided by the embodiments of the present application further includes a power supply component that provides power to the various components of the corn kernel internal component density measurement device 30. The power components may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the corn kernel internal component density measurement device 30.

A communication component configured to facilitate wired or wireless communication between the corn kernel internal component density measurement device 30 and other equipment. The corn kernel internal component density measuring device 30 can be accessed to a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. The communication component receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. The communication component also includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the corn kernel internal component density measurement device 30 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, processors, or other electronic components.

The same and similar parts among the various embodiments in the specification of the present application may be referred to each other. In particular, for the system and apparatus embodiments, since the method therein is substantially similar to the method embodiments, the description is relatively simple, and reference may be made to the description of the method embodiments for relevant points.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Of course, the above description is not limited to the above examples, and technical features that are not described in this application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present application and not for limiting the present application, and the present application is only described in detail with reference to the preferred embodiments instead, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present application may be made by those skilled in the art without departing from the spirit of the present application, and the scope of the claims of the present application should also be covered.