Device and method capable of rapidly achieving line-scan digital camera standardization

A line array camera and camera fixing technology, applied in image data processing, instrumentation, calculation, etc., can solve the problem of easy loss of feature points, and achieve the effect of reducing workload, production difficulty and low cost

Inactive Publication Date: 2013-04-24
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the technical problem that the feature points are easily lost in the calibration process of the linear array camera in the prior art, the present invention designs a plane target that can be used for the calibration of the linear array camera, and then develops a device that can quickly realize the calibration of the linear array camera, and discusses The device realizes the calibration method of line scan camera

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  • Device and method capable of rapidly achieving line-scan digital camera standardization
  • Device and method capable of rapidly achieving line-scan digital camera standardization
  • Device and method capable of rapidly achieving line-scan digital camera standardization

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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 2 As shown, the planar target 7 used in the calibration device of the present invention consists of a set of horizontal parallel lines with equal spacing and two sets of oblique parallel lines. Among them, the size of the target is L*H, L is the width of the target, H is the height of the target, and the distance between horizontal parallel lines on the target is d, L 1 , L 3 ,...,L 2n-1 is the horizontal parallel line, L 2 , L 6 ,...,L 4n-2 is a set of oblique parallel lines, L 4 , L 8 ,...,L 4n is another set of oblique parallel lines. figure 2 Only a schematic diagram of the structure of the target is given, and the size and line spacing of the specific target must be set according to the actual calibration situation.

[0026] Such as image 3 As shown, the present invention quickly realizes the device of ...

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Abstract

The invention discloses a device and a method which are capable of rapidly achieving line-scan digital camera standardization, and belongs to the technical field of line-scan digital camera standardization. The device comprises a precise guide rail (1), a camera fixing support (2), an optic base seat (6), a plane target (7), a first electro-optic theodolite (10) and a second electro-optic theodolite (11). An up and down regulating knob (8) and a left and right regulating knob (9) are arranged on the optic base seat (6). The device and the method which are capable of rapidly achieving the line-scan digital camera standardization have the advantages that the device effectively solves the problem that characterized points are prone to loss in a line-scan digital camera standardization process, meanwhile, the standardized characterized points are not required to be tested one by one, a relation between a target coordinate system and a global coordinate system only needs to be realized, the double theodolites are used for determining original point world coordinates of the target coordinate system, and workload of camera standardization is greatly reduced. In addition, the plane target is composed of simple straight lines and therefore manufacturing difficulty and cost of the plane target are reduced.

Description

technical field [0001] The invention belongs to the technical field of line array camera calibration, and in particular relates to a device and method for quickly realizing line array camera calibration. Background technique [0002] Since the line scan camera has only one column of pixels, it has great advantages over the area scan camera when it is applied to measure time and spatial resolution. The most important issue when using a line scan camera for optical precision measurement is the calibration of the line scan camera. The calibration of the camera is generally to establish an equation containing the internal and external parameters of the camera through the calibration points whose three-dimensional coordinates and image plane coordinates are known in space, and obtain the internal and external parameters of the camera by solving the equation parameters, and then pass the image point coordinates on the image plane when measuring The coordinates of the target point...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 戴明王子辰汪永阳
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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