CN211600037U - Camera position adjusting system - Google Patents

Abstract

The utility model relates to the field of vision processing, and discloses a camera position adjusting system, which comprises a computer, M image acquisition units, M electric holders and M position adjusting controllers, wherein M is a natural number more than or equal to 1; the image acquisition unit is electrically connected with the computer, the electric cradle head is electrically connected with the machine position adjusting controllers one by one, M machine position adjusting controllers are electrically connected with the computer, and the image acquisition unit is fixedly connected with the electric cradle head one by one to form a cradle head camera. The utility model discloses an automatic quick adjustment of camera position has reduced the consumption of a large amount of manpower and materials, has ensured camera position precision, to the demand that needs often change the camera angle among the polyphaser shooting system, and the application of this system can realize the very big promotion of efficiency.

Description

Camera position adjusting system

Technical Field

The utility model relates to a vision processing field especially relates to a camera position control system.

Background

With the increasing requirements of the video industry on shot time, multi-view live broadcast and other lenses, and the increasing requirements of the digital degree of objects such as VR (virtual Reality) and AR (Augmented Reality), the requirements of the technologies on hardware shooting parts are also increasing. The erection and angle adjustment of multiple cameras is a time-consuming and labor-consuming task.

The multi-camera angle adjustment appearing in the current market is mostly manual adjustment of a mechanical holder, and an operator manually adjusts each camera angle with reference to a picture returned by the camera. The adjusting method is a huge workload for tens and hundreds of multi-camera systems, and manual adjustment cannot ensure and cannot be reliable in precision. In addition, the camera angle can also be adjusted electrically by using an electric pan-tilt, but the electric pan-tilt adjusts the camera position through an operating rod, and an operator needs to stare at the picture returned by the camera for a long time to adjust, so that the efficiency is low, and the accuracy cannot be guaranteed.

Accordingly, those skilled in the art have endeavored to develop a system that enables automatic adjustment of the camera position.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that the operation complexity of camera regulation cloud platform in the polyphaser system, what further to solve is the poor problem of camera cloud platform precision.

In order to achieve the above object, the present invention provides a camera position adjustment system, which is characterized by comprising a computer, M image acquisition units, M electric holders, M position adjustment controllers, wherein M is a natural number greater than or equal to 1; the image acquisition unit is electrically connected with the computer, the electric cradle head is electrically connected with the machine position adjusting controllers one by one, M machine position adjusting controllers are electrically connected with the computer, and the image acquisition unit is fixedly connected with the electric cradle head one by one to form a cradle head camera.

Furthermore, the number of the machine position adjusting controllers is M +1, the machine position adjusting controllers are arranged according to a master-slave structure, one end of each of the M slave machine position adjusting controllers is electrically connected with the electric pan-tilt, the other end of each of the M slave machine position adjusting controllers is electrically connected with one host machine position adjusting controller, and the host machine position adjusting controllers are electrically connected with the computer.

Furthermore, the number of the machine position adjusting controllers is only 1, one end of each machine position adjusting controller is electrically connected with the M electric holders, and the other end of each machine position adjusting controller is electrically connected with the computer.

Further, the electric holder is an N-axis, and N is a natural number greater than or equal to 3.

Further, the machine position adjusting controller is a single chip microcomputer controlled by adopting a PELCO _ D bus protocol.

Further, the image acquisition unit is a camera.

Further, the device also comprises a characteristic object for positioning.

Further, the characteristic object is a sphere.

Furthermore, when the camera position is adjusted, the sphere is identified by using a Hough circle detection algorithm.

In view of the fact that the existing camera position adjusting system needs to consume too much manpower and material resources and is difficult to obtain higher precision, the application provides a brand-new camera position adjusting system, the system realizes automatic and rapid adjustment of the camera position, reduces consumption of a large amount of manpower and material resources, and ensures the camera position precision because the position of a characteristic object in a canvas is judged through a pixel level in the machine vision processing process; especially for the requirement of frequently changing the camera angle in a multi-camera shooting system, the system can be applied to greatly improve the efficiency.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a schematic view of an embodiment of the present invention;

fig. 2 is a schematic diagram of an embodiment of setting a master-slave attitude adjustment controller.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

The overall structure schematic diagram of the camera position adjusting system is shown in fig. 1, and the camera position adjusting system comprises M electric holders, M machine position adjusting controllers, a holder control line, M image acquisition units, a camera data line and a data acquisition and processing computer, wherein M is a natural number greater than or equal to 1.

The system connection relationship is as follows: the image acquisition unit is connected with the data acquisition and processing computer through a camera data line, the image acquisition unit is rigidly connected to the electric pan-tilt, and the camera position adjustment controller is connected with the computer through one end of a pan-tilt control line and the other end of the camera position adjustment controller is correspondingly connected with and controls the electric pan-tilt.

Considering the modularization and expandability of the system, in the optimization scheme shown in fig. 2, the number of the machine position adjusting controllers is M +1, the machine position adjusting controllers are arranged according to a master-slave structure, one end of each of the M slave machine position adjusting controllers is electrically connected with the electric pan-tilt, the other end of each of the M slave machine position adjusting controllers is electrically connected with a master machine position adjusting controller, and the master machine position adjusting controller is electrically connected with a computer.

In another scheme, only 1 machine position adjusting controller is provided, one end of each machine position adjusting controller is electrically connected with the M electric holders, and the other end of each machine position adjusting controller is electrically connected with the computer.

The electric pan-tilt is used for adjusting the camera position in cooperation with machine vision analysis and controlling the camera to rotate, and can be used but not limited to a two-axis or three-axis electric pan-tilt. The more degrees of freedom that electric pan-tilt selects for use, the more angles that can realize camera position adjustment.

In the embodiment, the control part of the electric pan-tilt is controlled by a single chip microcomputer and controlled by a PELCO _ D bus protocol.

The image acquisition unit acquires picture information, submits the picture information to the data acquisition and processing computer, analyzes and processes the image information to obtain the position of the characteristic object, and can select the existing cameras in a multi-camera system such as film and television or three-dimensional reconstruction, namely, the existing cameras are reused to calibrate the machine position of the existing cameras through the video information acquired by the cameras, so that the cost of the whole set of intelligent machine position adjusting system is minimized.

The operation process of the system is as follows: placing one or more characteristic objects in the middle of a camera position adjusting system, setting the positions of the characteristic objects in a camera shooting picture in a machine position to be adjusted on a data acquisition and processing computer, driving an image acquisition unit rigidly connected to the electric pan-tilt to move through multi-axis rotation translation and other movements, continuously acquiring object photo information within the visual angle range of the image acquisition unit by the image acquisition unit in the moving process, transmitting the object photo information to the computer through a camera data line for image analysis, calculating the positions of the characteristic objects in a canvas and comparing the positions with the set positions when the computer analyzes that the pictures acquired by the image acquisition unit contain the characteristic objects, informing a machine position adjusting controller of the comparison result to control the electric pan-tilt to rotate so that the characteristic objects finally fall at the set positions in the real-time camera shooting picture by the image acquisition unit, thereby achieving intelligent adjustment of the camera position.

The characteristic object placed in the multi-camera system shooting stage is an object with a fixed shape or a fixed color, and can be distinguished from other objects in the environment after being processed through edge detection or color detection of machine vision, so that the position of the characteristic object in the shooting picture of the image acquisition unit is marked, and then the camera position is adjusted through rotation of the electric holder.

Preferably, the characteristic object used for adjusting the position of the camera is a sphere, and the machine vision algorithm used is a mature hough circle detection algorithm.

In the camera position adjusting system applied to annular bullet time shooting, all image acquisition units are required to be aligned to the center of a circular stage, the visual angles of the image acquisition units are at one height, so that a characteristic sphere is placed in the center of the circular stage, and the sphere center of the characteristic sphere is required to be located at the center of each camera shooting picture after the camera position is adjusted. The method comprises the steps that a plurality of electric holders are fixed on a plane with equal height, cameras are rigidly connected to rocker arms of the electric holders, the holders are electrified to patrol and drive the cameras fixed on the holders to move according to a set motion track, meanwhile, the cameras shoot pictures and transmit the pictures to a server for background processing in real time, a computer performs circular detection on the transmitted pictures in real time, when a characteristic ball is detected in the pictures, the holder patrol is immediately stopped, the position of the characteristic ball in canvas is calculated, and the position of the characteristic ball is informed to a position adjusting controller to control the electric holders to move so that the center of the sphere of the characteristic ball is located at the center of the shot pictures of an image acquisition unit, and the camera position adjustment is.

In this embodiment, since the machine vision algorithm uses the hough circle detection algorithm, the circular surface with similar characteristic spheres cannot be present in order to avoid the misjudgment of the camera in the field environment.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (9)

1. A camera position adjusting system is characterized by comprising a computer, M image acquisition units, M electric holders and M machine position adjusting controllers, wherein M is a natural number more than or equal to 1; the image acquisition unit is electrically connected with the computer, the electric cradle head is electrically connected with the machine position adjusting controllers one by one, M machine position adjusting controllers are electrically connected with the computer, and the image acquisition unit is fixedly connected with the electric cradle head one by one to form a cradle head camera.

2. The system as claimed in claim 1, wherein the number of the machine position adjustment controllers is M +1, and the M slave machine position adjustment controllers are arranged in a master-slave configuration, one end of each of the M slave machine position adjustment controllers is electrically connected to the motorized pan/tilt head, the other end of each of the M slave machine position adjustment controllers is electrically connected to a master machine position adjustment controller, and the master machine position adjustment controller is electrically connected to the computer.

3. The system as claimed in claim 1, wherein the number of the position adjustment controllers is only 1, and one end of each of the position adjustment controllers is electrically connected to the M motorized pan/tilt heads, and the other end is electrically connected to the computer.

4. A camera position adjustment system according to claim 1 or 2, wherein the motorized pan and tilt head has an N axis, N being a natural number equal to or greater than 3.

5. The camera position adjustment system according to claim 1 or 2, wherein the machine position adjustment controller is a single chip microcomputer controlled using a PELCO D bus protocol.

6. A camera position adjustment system according to claim 1 or 2, characterized in that the image acquisition unit is a camera.

7. A camera position adjustment system according to claim 1 or 2, further comprising a feature object for positioning.

8. The camera position adjustment system of claim 7, wherein the feature object is a sphere.

9. The system of claim 8, wherein the sphere is identified using a hough circle detection algorithm when performing camera pose adjustments.

Images