阅读说明：本技术 一种全自动化获取摄像机聚焦曲面的测量方法 (Measuring method for fully automatically acquiring focusing curved surface of camera ) 是由 郑志斌 黄洪加 张腾腾 刘双广 于 2019-10-30 设计创作，主要内容包括：本发明属于视频安防监控技术领域,具体涉及一种全自动化获取摄像机聚焦曲面的测量方法。根据不同的机芯所需聚焦的距离,将对应长度的直角型导轨铺设在生产线上；所述电控移动平台设置在所述导轨上,并可在所述导轨上平稳移动；所述靶面固定连接所述移动平台；所述系统还包括旋转平台,所述机芯固定设置在旋转平台上,获取机芯画面中心距离靶面中心的位置,从而控制旋转平台进行水平和垂直方向的转动,直到机芯画面中心处于所述靶面中心的附近。(The invention belongs to the technical field of video security monitoring, and particularly relates to a measuring method for fully automatically acquiring a focusing curved surface of a camera. According to the focusing distances required by different movement mechanisms, right-angle guide rails with corresponding lengths are laid on a production line; the electric control mobile platform is arranged on the guide rail and can stably move on the guide rail; the target surface is fixedly connected with the moving platform; the system also comprises a rotary platform, wherein the movement is fixedly arranged on the rotary platform, and the position of the center of the movement picture away from the center of the target surface is obtained, so that the rotary platform is controlled to rotate in the horizontal and vertical directions until the center of the movement picture is positioned near the center of the target surface.)

1. A measuring system for fully automatically acquiring a focusing curved surface of a camera comprises a target surface, guide rails and an electric control moving platform, and is characterized in that right-angle guide rails with corresponding lengths are laid on a production line according to focusing distances required by different machine cores; the electric control mobile platform is arranged on the guide rail and can stably move on the guide rail; the target surface is fixedly connected with the moving platform; the system also comprises a rotary platform, wherein the movement is fixedly arranged on the rotary platform, and the position of the center of the movement picture away from the center of the target surface is obtained, so that the rotary platform is controlled to rotate in the horizontal and vertical directions until the center of the movement picture is positioned near the center of the target surface.

2. The system for fully automatically acquiring the measurement curve of the camera focus according to claim 1, wherein the electrically controlled moving platform comprises a plurality of V-shaped guide wheels, and the guide wheels and the guide rails cooperate with each other to enable the moving platform to move smoothly on the guide rails.

3. The system for fully automatically acquiring the measurement system of the focal curved surface of the camera according to claim 2, wherein the number of the V-shaped guide wheels is 4.

4. The system for fully automatically acquiring the focal curved surface of the camera according to claim 2, wherein the plurality of V-shaped guide wheels are driven by a stepping motor and a timing pulley.

5. The system for fully automatically acquiring the measurement system of the focal curved surface of the camera according to claim 1, wherein the rotating platform is driven by a stepping motor and a timing pulley.

6. The measurement system for fully automatically acquiring the focusing curved surface of the camera is characterized in that the mobile platform and the rotating platform are mutually associated through a laser ranging module and a WIFI module.

7. The system for automatically acquiring the measurement system of the focal curved surface of the camera according to claim 6, wherein the distance moved by the moving platform is controlled through the laser ranging, so that the position of the target surface from the movement is determined.

8. The system of claim 6, wherein the WIFI module is used for data communication between a mobile platform and a rotating platform.

9. A measuring method for fully automatically acquiring a focusing curved surface of a camera is characterized by comprising the following steps:

firstly, mounting a plurality of machine cores on each rotating platform, then electrifying all equipment, and starting a full-automatic process;

secondly, the movement reads the position of a central point of the current target surface through an image picture, controls the rotation of a rotary platform and enables the center of the picture to coincide with the central point of the target surface;

thirdly, controlling the target surface to move to the position of the first section through the laser ranging module, and reading M object distance values of the first section through the machine core;

and fourthly, after the data measurement of the first section is finished, controlling the target surface to move to the second section, reading the data, and repeating the steps until all the sections are measured.

10. The method of claim 9, wherein the target surface moves in multiple sections along electronically controlled rails.

Technical Field

The invention belongs to the technical field of video security monitoring, and particularly relates to a measuring method for fully automatically acquiring a focusing curved surface of a camera.

Background

With the development of security industry technology, the functions of the monitoring camera are more and more powerful, and the monitoring camera is accompanied by a set of more accurate measurement method; as far as the focus function of the monitoring camera is concerned, now looking further and further away, the precision requirements for focusing are higher and higher. The method for regulating focusing accuracy is characterized by that the object distance is divided into N zones, in the described N zones a read target surface is set, in the target surface M object distance values are extracted, then the instruction is sent to the movement to measure the focusing curves of the described M X N object distance values, then the described M X N focusing curves are fitted to form focusing curved surface. Generally, M × N may have hundreds of points, and the measured engineering quantity is very large. With the current prior art solutions, the position of the movement and the target surface is adjusted manually by observing the images, according to the point to be tested for each sector, and recording the data.

The prior technical scheme has the following defects: because in the whole process of obtaining the focusing curved surface, the object distance value of hundreds of points is read by a single machine core, the time is quite long, if the whole process is manually controlled, firstly, 1-2 workers are occupied for a long time, and the effective time utilization rate of the workers is relatively low. Secondly, the manual adjustment method takes a lot of time, and moreover, the efficiency is very low because only one worker can pick one machine at a time, so that the prior art has the disadvantages of low production efficiency and high cost.

Disclosure of Invention

In order to solve the technical defects in the prior art, the invention designs a measuring method for fully automatically acquiring the focusing curved surface of the camera.

The invention is realized by the following technical scheme:

a measuring system for fully automatically acquiring a focusing curved surface of a camera comprises a target surface, guide rails and an electric control moving platform, wherein right-angle guide rails with corresponding lengths are laid on a production line according to focusing distances required by different machine cores; the electric control mobile platform is arranged on the guide rail and can stably move on the guide rail; the target surface is fixedly connected with the moving platform; the system also comprises a rotary platform, wherein the movement is fixedly arranged on the rotary platform, and the position of the center of the movement picture away from the center of the target surface is obtained, so that the rotary platform is controlled to rotate in the horizontal and vertical directions until the center of the movement picture is positioned near the center of the target surface.

Preferably, the electrically-controlled mobile platform comprises a plurality of V-shaped guide wheels, and the guide wheels and the guide rail are matched with each other to enable the mobile platform to stably move on the guide rail.

Preferably, the number of the V-shaped guide wheels is 4.

Preferably, the plurality of V-shaped guide wheels are driven by a stepping motor and a timing pulley.

Preferably, the rotating platform is driven by a stepping motor and a timing pulley.

Preferably, the mobile platform and the rotating platform are associated with each other through a laser ranging module and a WIFI module.

Preferably, the distance moved by the moving platform is controlled through the laser ranging, so that the position of the target surface from the movement is determined.

Preferably, the WIFI module is used for data communication between the mobile platform and the rotating platform.

A measuring method for fully automatically acquiring a focusing curved surface of a camera comprises the following steps:

firstly, mounting a plurality of machine cores on each rotating platform, then electrifying all equipment, and starting a full-automatic process;

secondly, the movement reads the position of a central point of the current target surface through an image picture, controls the rotation of a rotary platform and enables the center of the picture to coincide with the central point of the target surface;

thirdly, controlling the target surface to move to the position of the first section through the laser ranging module, and reading M object distance values of the first section through the machine core;

and fourthly, after the data measurement of the first section is finished, controlling the target surface to move to the second section, reading the data, and repeating the steps until all the sections are measured.

Further, the target surface is moved in a plurality of sections along an electronically controlled rail.

Compared with the prior art, the invention has at least the following beneficial effects or advantages: 1. the production line is fully automated, so that the production efficiency is greatly improved; 2. personnel are not needed to participate in the whole process, and the personnel cost is reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings;

fig. 1 is a structural diagram of an electric control mobile platform of a camera movement;

fig. 2 is a structural diagram of an electric control rotating platform of a camera core;

FIG. 3 is a schematic view of the structure of the target surface moving in multiple sections along the guide rail.

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 some, not all, embodiments of the present invention. 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.

In order to improve the production efficiency and reduce the production cost, the invention designs a measuring method for fully automatically obtaining the focusing curved surface of the camera. For the design of the target surface, according to the distance of focusing required by different movement mechanisms, a right-angle guide rail with corresponding length is designed to be laid on a production line, and then an electric control moving platform is designed on the guide rail, the principle is that 4V-shaped guide wheels are matched with the guide rail, a stepping motor is matched with a synchronous pulley for driving, the whole platform is controlled to stably move on the guide rail, and the target surface is fixed on the platform, as shown in figure 1. For the design of the rotary platform of the camera movement, a set of stepping motor and synchronous pulley driving mode is also respectively designed in the horizontal and vertical directions, the movement is fixed on the platform, and the horizontal and vertical rotation of the movement can be controlled, as shown in fig. 2. The rotation of the rotary platform can be controlled according to the image algorithm, so that the center of the frame of the calibration movement is close to the center of the target surface. Through laser rangefinder and WIFI module interrelatedness between moving platform and the rotary platform, through laser rangefinder, can control the distance that moving platform removed, guarantee the position of target surface apart from the core, through the communication of WIFI module, can convey the data between moving platform and the rotary platform.

The whole automatic measurement method comprises the following steps:

firstly, mounting a plurality of machine cores on each rotating platform, then electrifying all equipment, and then starting a full-automatic process;

secondly, the machine core reads the position of the center point of the current target surface through the image, controls the rotation of the rotary platform and enables the center of the image to be coincident with the center of the target surface;

thirdly, controlling the target surface to move to the position of the first section through the laser ranging module, and starting to read M object distance values of the first section by the machine core;

and fourthly, after the data measurement of the first section is finished, controlling the target surface to move to the second section, reading the data, and repeating the steps until all the sections are measured.

The invention designs a whole set of full-automatic measuring method for acquiring the focusing curved surface of the camera. For the target surfaces in the N areas, an electric control guide rail is designed, manual intervention is not needed, and the target surfaces can be controlled to move to a corresponding position at a certain time point according to feedback of a camera movement, as shown in fig. 3. For the camera core, an electric control rotary platform is designed, the camera can be controlled to automatically align to the target surface without manual adjustment, a plurality of cores can be produced simultaneously, and the production efficiency is greatly improved.

The invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the program realizes the steps of the measuring method when executed by a processor.

The invention also provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the measurement method are implemented when the processor executes the program.

The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the invention are also within the protection scope of the invention.