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Method for positioning binocular non-calibrated space

A spatial positioning and non-calibration technology, applied in image data processing, instrumentation, computing, etc., to achieve accurate positioning, simple equipment deployment and debugging

Active Publication Date: 2012-08-01
广州乐庚信息科技有限公司
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  • Abstract
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Problems solved by technology

[0003] In order to overcome the defects and deficiencies of the existing positioning methods, the object of the present invention is to provide a binocular non-calibrated space positioning method, which can accurately obtain the position data of the moving target, so that the target can be stretched to focus when shooting

Method used

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  • Method for positioning binocular non-calibrated space
  • Method for positioning binocular non-calibrated space

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Embodiment

[0019] Such as figure 1 As shown, the binocular non-calibration space positioning method of the present invention includes the following steps:

[0020] The first step is to start the first camera and the second camera, and obtain the position data of the center point of the moving target in the first camera and the second camera respectively. The position data of the center point of the moving target at the first camera and the second camera are obtained by background difference method.

[0021] Such as figure 2 As shown, the acquisition of the position data of the center point of the moving target includes the following steps: The background subtraction method is a method to obtain the contour of the moving target by performing a differential operation on the frames in the video image sequence, which can be well applied to the presence of multiple The condition of the moving target. When there is movement of objects in the monitoring scene, there will be obvious differen...

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Abstract

The invention discloses a method for positioning a binocular non-calibrated space, which comprises the following steps of: acquiring position data of a center point of a moving target by a background differencing method; by a camera imaging principle, calculating angle and directional data of the moving target in a scene relative to a shooting optical axis of a current analysis picture so as to obtain coordinates of a moving point and a shooting point; establishing a virtual coordinate system in the shooting scene and obtaining values of an angle a and an angle c between optical axes of cameras and an edge parallel to the longitudinal axis of the virtual coordinate system according to imaging target surfaces and focal length parameters of the cameras; and according to a distance BC between two cameras and the values of the angle a and the angle c, solving a coordinate value of the moving point E relative to a coordinate origin O of the virtual coordinate system and then according to the coordinates of the shooting point, calculating angles and directions of the moving point E relative to the two cameras. According to the method, position data of the moving target can be accurately acquired and the focal length stretching shooting can be carried out in the shooting process.

Description

technical field [0001] The invention relates to a method for spatially locating a target during recording and broadcasting. Background technique [0002] At present, there is a method based on camera calibration in the industry to solve the problem of target positioning. This method tests the internal parameters of the camera (that is, calibration) and then performs mathematical calculations based on the data of the target on the shooting screen combined with the parameters obtained from the calibration, and calculates the target in the actual scene. The disadvantage of this algorithm is that the calibration process is complicated, the construction workload is heavy, and the internal parameters of the camera cannot be accurately obtained. There is also a monocular (single camera) positioning algorithm, but it can only obtain the target's azimuth and angle, and cannot accurately calculate the target's depth of field data, and cannot stretch the focal length of the target for ...

Claims

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Application Information

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IPC IPC(8): G06T7/20
Inventor 唐武雷张林玲吴少鸿蔡志峰曾子丹
Owner 广州乐庚信息科技有限公司
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