阅读说明：本技术 利用无人机倾斜摄影开展不动产权籍测量技术 (Technology for measuring real estate title by utilizing unmanned aerial vehicle oblique photography ) 是由 陈建忠 于 2021-08-23 设计创作，主要内容包括：本发明公开了利用无人机倾斜摄影开展不动产权籍测量技术,是由数据采集、数据处理、模型制作与检擦、测图、检查与评定和成果制作构成,包括以下步骤,数据采集,所述数据采集包括测区踏勘、航线设计、无人机采集和布测控制点,数据处理,所述数据处理包括数据导入、匹配连接点、空三优化和加入控制点,模型制作与检查,所述模型制作与检擦包括空三报告检查、模型精度检核、实景三维模型、真正射影像和利用正射影像(DOM)检查像片控制点,测图；通过利用正射影像(DOM)检查像片控制点可以提前发现模型质量的缺陷,及时外业补飞,减少因采用达不到精度的模型进行内业矢量化,造成矢量化成果返工,提高工作效率的目的。(The invention discloses a technology for measuring an real estate title by utilizing unmanned aerial vehicle oblique photography, which consists of data acquisition, data processing, model making and detecting, mapping, inspection and evaluation and achievement making, and comprises the following steps of data acquisition, wherein the data acquisition comprises survey area surveying, route design, unmanned aerial vehicle acquisition and distribution control points, data processing comprises data import, matching connection points, space three optimization and control point addition, the model making and inspection comprises space three report inspection, model precision check, a real three-dimensional model, a true orthographic image and an image control point inspection by utilizing an orthographic image (DOM), and mapping; the defects of the model quality can be found in advance by utilizing the orthographic image (DOM) to check the photo control points, field work is supplemented in time, reworking of vectorization results caused by adopting a model which can not reach the precision to carry out field work vectorization is reduced, and the working efficiency is improved.)

1. The technology for measuring the real estate title by utilizing unmanned aerial vehicle oblique photography is composed of data acquisition, data processing, model making and detecting, mapping, inspection and evaluation and result making, and comprises the following steps:

data acquisition: the data acquisition comprises survey area surveying, route design, unmanned aerial vehicle acquisition and control point distribution.

(II) data processing: the data processing comprises data import, matching connection points, space-time-space-time optimization and adding control points.

(III) model making and checking: the model making and checking comprises the steps of checking a three-dimensional report, checking the precision of the model, checking a real-scene three-dimensional model, checking a real ortho-image and checking a photo control point by utilizing the ortho-image (DOM).

(IV) mapping: the mapping comprises a live-action three-dimensional model, empty three achievements, an undistorted photo, boundary address points, boundary address lines, a land parcel and a house.

And (V) checking and evaluating: the checking and evaluating comprises gross error checking, boundary point precision checking, boundary edge checking, house area precision checking, space graph checking tool and graph space relation checking.

(VI) production of results: the achievement production comprises a real-scene three-dimensional model, an orthoscopic image, a 1:500 cadastre map, a house plan view household map and an immovable cadastre database.

2. The technique of claim 1 for performing measurements of real estate using unmanned aerial vehicle oblique photography, wherein: and (c) acquiring data, namely calculating the flight altitude according to ground resolution, camera parameters and the like by using existing topographic and geographic data of the survey area through site reconnaissance and adopting professional aerial survey software, designing a flight route of the unmanned aerial vehicle, determining flight time according to weather conditions, and acquiring aerial survey pictures of the survey area. According to the requirement of the accuracy of the right book image, photo control points are selected on the survey area image before flight, and the photo control points can be manually arranged before flight and can also be selected as obvious ground object points.

3. The technique of claim 1 for performing measurements of real estate using unmanned aerial vehicle oblique photography, wherein: and (2) processing data in the step (II), namely processing the field flight photo and POS data by using three-dimensional modeling software, and forming a space-to-space result of the measurement area after the adjustment of the free net is qualified and the absolute orientation is qualified by using the photo control point.

4. The technique of claim 1 for performing measurements of real estate using unmanned aerial vehicle oblique photography, wherein: and (3) making and checking the model in the step (III), namely checking a null three report, checking the model by using a shot check point, outputting a live-action three-dimensional model after the model is qualified, generating the model in a tile mode, wherein the format is OBG and OSGB, checking the shot control point by using DOM, ensuring that the difference between the actual measurement coordinate of the shot control point and the coordinate value of the record of the DOM image control point is not more than 1.2 times of ground resolution, ensuring that the model is qualified, ensuring that the difference between the actual measurement coordinate of the shot control point and the coordinate value of the record of the DOM image control point is more than 1.2 times of ground resolution, ensuring that the model is unqualified, and ensuring that the unqualified area needs to acquire data again.

5. The technique of claim 1 for performing measurements of real estate using unmanned aerial vehicle oblique photography, wherein: and (IV) mapping, namely performing open hole vectorization on the boundary points (lines) by using the three-dimensional model, the empty three results and the undistorted photos, and simultaneously performing assignment on the land parcel and the house.

6. The technique of claim 1 for performing measurements of real estate using unmanned aerial vehicle oblique photography, wherein: and (V) checking and evaluating, namely checking the gross error by using a precision evaluating tool, checking whether the gross error rate is less than 5%, if the gross error rate is qualified, if the gross error rate is more than 5%, if the gross error rate is not more than 5%, mapping is required again, if the gross error rate is more than two times, the mapping is required again, if the gross error rate is less than two times, the mapping is required again, if the gross error rate is qualified, checking the spatial relation of the graph by using a spatial graph checking tool, and finally processing the data to finish the checking and evaluating.

7. The technique of claim 1 for performing measurements of real estate using unmanned aerial vehicle oblique photography, wherein: and (6) the achievement of the step (six) is to make the three-dimensional model comprise OBJ, OSGB, origin data, three reports of sky and air, an undistorted photo, a framing cadastre map, a real estate map, a land parcel map, a real estate layering division map and an real estate title database.

Technical Field

The invention relates to the technical field of unmanned aerial vehicle oblique photography measurement, in particular to a technology for developing real estate title measurement by utilizing unmanned aerial vehicle oblique photography.

Background

The unmanned aerial vehicle oblique photogrammetry is a mature technology for developing town village real estate survey, the unmanned aerial vehicle oblique photogrammetry obtains high-resolution images of vertical angles, horizontal angles and vertical angles through a flight platform, a flight control system, a ground monitoring system and the like, obtains image control point space coordinates through image control point design and field measurement, generates a three-dimensional model or point cloud data with a geographic space position through three-dimensional model manufacturing software through space-three encryption, image control point pricking, model production and the like, generates a geographic space data set of vector points, lines, surfaces and the like by utilizing the three-dimensional model or point cloud data, and provides the three-dimensional model, the three-dimensional point cloud, the geographic space data set and the like according to the requirements of users so as to meet the requirements of production and management.

The method comprises the steps of establishing an ownership database used by a two-dimensional geographic information management platform capable of meeting daily management and real estate registration certification through an ownership map, a land parcel map, a real estate plan and a layered household map which are manufactured through oblique photogrammetry by an unmanned aerial vehicle, performing attribute correlation of an external property investigation, an internal property data arrangement, a graph and an authorized person and the like, manufacturing three-dimensional models such as buildings and structures and the like through oblique photogrammetry by the unmanned aerial vehicle, performing technical processing such as model singleization, layered household spatial position matching and the like, and using the three-dimensional real estate information management platform as background data for spatial positioning of real estate units (land and house), attribute data query and statistics related to authorized persons, regional spatial analysis and decision and the like.

However, the existing technical engineering has high rework cost and low precision evaluation efficiency, and the land parcel and house space inspection method has insufficient systematicness, so that the unmanned aerial vehicle oblique photography is used for developing the real estate measuring technology.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems of high rework cost, low precision evaluation efficiency and insufficient systematicness of land parcel and house space inspection methods, the invention provides a technology for carrying out real estate book measurement by utilizing unmanned aerial vehicle oblique photography.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a technology for carrying out measurement of an real estate title by utilizing oblique photography of an unmanned aerial vehicle, which consists of data acquisition, data processing, model making and erasing, mapping, inspection and evaluation and result making, and comprises the following steps:

data acquisition: the data acquisition comprises survey area surveying, route design, unmanned aerial vehicle acquisition and control point distribution.

(II) data processing: the data processing comprises data import, matching connection points, space-time-space-time optimization and adding control points.

(III) model making and checking: the model making and checking comprises the steps of checking a three-dimensional report, checking the precision of the model, checking a real-scene three-dimensional model, checking a real ortho-image and checking a photo control point by utilizing the ortho-image (DOM).

(IV) mapping: the mapping comprises a live-action three-dimensional model, empty three achievements, an undistorted photo, boundary address points, boundary address lines, a land parcel and a house.

And (V) checking and evaluating: the checking and evaluating comprises gross error checking, boundary point precision checking, boundary edge checking, house area precision checking, space graph checking tool and graph space relation checking.

(VI) production of results: the achievement production comprises a real-scene three-dimensional model, an orthoscopic image, a 1:500 cadastre map, a house plan view household map and an immovable cadastre database.

Preferably, the data acquisition in the step (one) is to calculate the flight altitude according to ground resolution, camera parameters and the like by using existing topographic and geographic data of the survey area through site reconnaissance and adopting professional aerial survey software, design the flight route of the unmanned aerial vehicle, determine the flight time according to weather conditions and acquire aerial survey pictures of the survey area. According to the requirement of the accuracy of the right book image, photo control points are selected on the survey area image before flight, and the photo control points can be manually arranged before flight and can also be selected as obvious ground object points.

Preferably, the data processing in the step (II) is to process the field flight photos and the POS data by using three-dimensional modeling software, and after the adjustment of the free net is qualified, the absolute orientation is qualified by using the photo control points to form the space-to-air results of the measuring area.

Preferably, the model making and checking in the step (three) is to check a null three report, check the model by using a shot check point, output a live-action three-dimensional model after the check is qualified, generate the model in a tile mode with a format of OBG and OSGB, check the shot control point by using DOM, make the difference between the actual measurement coordinates of the shot control point and the coordinate values of the point of the DOM image control point not more than 1.2 times of the ground resolution, be qualified, make the difference between the actual measurement coordinates of the shot control point and the coordinate values of the point of the DOM image control point more than 1.2 times of the ground resolution, be unqualified, and acquire data again in the unqualified area.

Preferably, the mapping in the step (four) is to perform naked eye vectorization on the address points (lines) by using a three-dimensional model, a null three result and an undistorted photo, and simultaneously perform assignment on the land parcel and the house.

Preferably, the checking and evaluating in the step (v) is to use a precision evaluating tool to check the gross error, if the gross error rate is less than 5%, the gross error rate is qualified, if the gross error rate is greater than 5%, the gross error rate is not qualified, and if the gross error rate is greater than 5%, the gross error rate is not qualified, then the mapping is required again, meanwhile, the precision evaluating tool is used to check the precision of the boundary point, the boundary edge and the precision of the house area, if the checking error rate is less than two times the median error, if the checking error rate is greater than two times the mapping is required again, if the checking error rate is less than two times the median error rate is qualified, after the checking and evaluating is qualified, a spatial relationship of the graph is checked by using a spatial graph checking tool, and finally, the data is processed to complete the checking and evaluating.

Preferably, the step (six) is implemented by making the three-dimensional model include an OBJ, an OSGB, origin data, a null three report, an undistorted photograph, a split cadastral map, a house map, a land parcel map, a house layered division map, and an real estate database.

The invention has the advantages that:

1. the invention can find the defect of the model quality in advance by using the orthographic image (DOM) to check the photo control point, and can carry out field operation compensation in time, thereby reducing the rework of the vectorization result caused by adopting the model which can not reach the precision to carry out field operation vectorization;

2. in the process of checking and evaluating, software processing can be provided for precision evaluation of boundary points (lines) and house area through the arrangement of a precision evaluation tool, the working efficiency is improved on the premise of ensuring the precision evaluation quality, meanwhile, a checking method of the spatial relationship between adjacent surface elements is adopted for checking the space patterns of land parcel, house, balcony and the like, and the contents of surface gap checking, house and balcony excess land checking, intersection checking of enclosing walls and door piers, vectorization result checking and topology checking are sorted, so that the result checking is more systematic, and the result quality and the working efficiency are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a work flow chart of the embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the following describes the production and application of the method for measuring real estate by oblique photography with an unmanned aerial vehicle:

the method comprises the following steps of data acquisition, data processing, model making and erasing, mapping, inspection and evaluation and result making, and comprises the following steps:

data acquisition: the data acquisition comprises survey area surveying, route design, unmanned aerial vehicle acquisition and control point distribution.

(II) data processing: the data processing comprises data import, matching connection points, space-time-space-time optimization and adding control points.

(III) model making and checking: the model making and checking comprises the steps of checking a three-dimensional report, checking the precision of the model, checking a real-scene three-dimensional model, checking a real ortho-image and checking a photo control point by utilizing the ortho-image (DOM).

(IV) mapping: the mapping comprises a live-action three-dimensional model, empty three achievements, an undistorted photo, boundary address points, boundary address lines, a land parcel and a house.

And (V) checking and evaluating: the checking and evaluating comprises gross error checking, boundary point precision checking, boundary edge checking, house area precision checking, space graph checking tool and graph space relation checking.

(VI) production of results: the achievement production comprises a real-scene three-dimensional model, an orthoscopic image, a 1:500 cadastre map, a house plan view household map and an immovable cadastre database.

And (c) acquiring data, namely calculating the flight altitude according to ground resolution, camera parameters and the like by using existing topographic and geographic data of the survey area through site reconnaissance and adopting professional aerial survey software, designing a flight route of the unmanned aerial vehicle, determining flight time according to weather conditions, and acquiring aerial survey pictures of the survey area. According to the requirement of the accuracy of the right book image, photo control points are selected on the survey area image before flight, and the photo control points can be manually arranged before flight and can also be selected as obvious ground object points.

And (2) processing data in the step (II), namely processing the field flight photo and POS data by using three-dimensional modeling software, and forming a space-to-space result of the measurement area after the adjustment of the free net is qualified and the absolute orientation is qualified by using the photo control point.

And (3) making and checking the model in the step (III), namely checking a null three report, checking the model by using a shot check point, outputting a live-action three-dimensional model after the model is qualified, generating the model in a tile mode, wherein the format is OBG and OSGB, checking the shot control point by using DOM, ensuring that the difference between the actual measurement coordinate of the shot control point and the coordinate value of the record of the DOM image control point is not more than 1.2 times of ground resolution, ensuring that the model is qualified, ensuring that the difference between the actual measurement coordinate of the shot control point and the coordinate value of the record of the DOM image control point is more than 1.2 times of ground resolution, ensuring that the model is unqualified, and ensuring that the unqualified area needs to acquire data again.

And (IV) mapping, namely performing open hole vectorization on the boundary points (lines) by using the three-dimensional model, the empty three results and the undistorted photos, and simultaneously performing assignment on the land parcel and the house.

And (V) checking and evaluating, namely checking the gross error by using a precision evaluating tool, checking whether the gross error rate is less than 5%, if the gross error rate is qualified, if the gross error rate is more than 5%, if the gross error rate is not more than 5%, mapping is required again, if the gross error rate is more than two times, the mapping is required again, if the gross error rate is less than two times, the mapping is required again, if the gross error rate is qualified, checking the spatial relation of the graph by using a spatial graph checking tool, and finally processing the data to finish the checking and evaluating.

And (6) the achievement of the step (six) is to make the three-dimensional model comprise OBJ, OSGB, origin data, three reports of sky and air, an undistorted photo, a framing cadastre map, a real estate map, a land parcel map, a real estate layering division map and an real estate title database.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.