Flat resolution correcting method for image optical system and apparatus thereof

A technology of planar resolution and optical system, which is applied in the parts of TV system, image communication, TV, etc., can solve the problems of affecting the accuracy and speed of correction, increasing the complexity of optical system mechanism, and short size, etc.

CN1949887AInactive Publication Date: 2007-04-18CHROMA ATE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2007-04-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a plane resolution correcting method and device for video optical system, comprising a correction sample and a video sensing device, where the correction sample surface has open wire-buried wire alternating straight line stripes, and the correction sample is arranged at a to-be-measued plane, the video sensing device has video pickup means, memory means and logic calculation means. By picking up correction sample video information and storing the video information and simultaneously selecting and solving straight line equation of open- wire stripes, by straight line slope and intercept of the straight line equation, and by calculating average distance between adjacent open wires through the intercept, finally calculating the multiplication of the video sensing device picked-up video by geometrical means.
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Description

technical field

[0001] The present invention relates to a plane resolution calibration method of an image optical system and its device, and in particular provides a calibration method for an image capture device, which is used to correct the image magnification corresponding to the pixels. Background technique

[0002] The known planar resolution calibration method of an image optical system provides calibration for an image capture device to determine the image magnification corresponding to the pixels of a CCD sensor or a CMOS sensor. Usually this type of technology is to capture the image of the scale marked with the size through the image capture device. Referring to the display in Figure 7, the positions P1 and P2 of the two scale lines are selected by image processing or manually, and the pixel distance between the two is calculated, and The actual distance between P1 and P2 on the scale 6 is determined by design. By comparing the actual distance size with the pixel ...

Examples

Embodiment Construction

[0030] Fig. 1 is a schematic diagram showing the calibration samples used in the method for correcting the planar resolution of the image optical system of the present invention; Fig. 2 is a schematic diagram showing the coordinates of the sensing components of the method for correcting the planar resolution of the image optical system of the present invention. Shown with reference to Fig. 1, it is the calibration sample 1 used in the present invention, and this calibration sample 1 has several bright lines 11 and dark line 12 alternate stripes, and these bright lines 11 are parallel to each other and have the same width, and these dark lines 12 also The lines are parallel to each other and have the same width, wherein the actual distance between the bright lines 11 is denoted as DS. In addition, as shown in FIG. 2 , it is a schematic diagram of the measurement coordinates 2 not shown in the figure of the image sensing device used in the present invention, wherein each unit cel...