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Method for pixel splicing and matching of imaging dislocation and lap joint of spaceflight TDICCD camera

A technology of overlapping pixels and splicing and registration, which is applied in electrical components, image communications, televisions, etc., can solve problems such as the inability to realize aerospace TDICCD large-angle motorized imaging pixel deviation, narrow application range of image stitching technology, etc., and achieve high speed Fast, simple and reliable method, high splicing precision effect

Inactive Publication Date: 2014-07-09
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 problem that the existing image stitching technology has a narrow application range and cannot realize the pixel deviation of aerospace TDICCD large-angle motorized imaging, the present invention provides a splicing and registration method for aerospace TDICCD camera imaging dislocation and overlapping pixels

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  • Method for pixel splicing and matching of imaging dislocation and lap joint of spaceflight TDICCD camera
  • Method for pixel splicing and matching of imaging dislocation and lap joint of spaceflight TDICCD camera
  • Method for pixel splicing and matching of imaging dislocation and lap joint of spaceflight TDICCD camera

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specific Embodiment approach 2

[0064] Specific embodiment 2. This embodiment is an embodiment of the splicing and registration method for aerospace TDICCD camera imaging dislocation and overlapping pixels described in specific embodiment 1:

[0065] 1. Set the number of overlapping pixels of two adjacent CCDs in the horizontal direction and the number of misaligned pixels in the vertical direction of the two rows of CCDs as:

[0066] m 0 =L / a=628.5,

[0067] N 0 =l / a=50,

[0068] Among them, a=8.75×10 -6 m is the TDICCD pixel size;

[0069] L=5.5×10 -3 m is the overlapping dimension of two adjacent TDICCDs in the transverse direction;

[0070] l=4.375×10 -4 m is the dislocation size of the difference between the two rows of TDICCDs in the longitudinal direction.

[0071] 2. Calculation Number of vertically misaligned pixels:

[0072] N 14 T = N 14 T - 1 ...

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Abstract

The invention discloses a method for pixel splicing and matching of imaging dislocation and lap joint of a spaceflight TDICCD camera and relates to the technical field of photoelectronic imaging. The method solves the problems that the existing image splicing technology is narrow in application range and cannot achieve pixel bias of spaceflight TDICCD large-angle mobile imaging. According to the method, on the basis of the magnitude of mismatch, caused by satellite flexible and mobile imaging, between the speed and the line transfer time of all CDDs, a pixel matching and splicing algorithm of the width lap joint direction and the satellite flight dislocation direction of the CCDs is designed, the accuracy of CCD image splicing can be achieved in real time, image pixel matching is ensured, and then a high-quality image is obtained. By means of the imaging pixel quick splicing and matching method, the splicing accuracy is high, the speed is high, the method is simple and reliable, and a decision-making basis is provided for quick image splicing of satellite large-angle mobile imaging.

Description

technical field [0001] The invention relates to the technical field of optoelectronic imaging, in particular to a method for quickly splicing and registering imaging dislocation and overlapping pixels of an aerospace TDICCD camera. Background technique [0002] Wide-field cameras have been widely used on remote sensing satellites. The wide-field camera imaging system is composed of TDI-CCD focal plane modules, and the stitching method mainly adopts the staggered stitching method. At this stage, due to the flexible attitude during the satellite imaging process, the speed mismatch between each TDICCD and the line transfer time are different. The images generated by the multi-chip TDICCD are staggered in a certain position in the width direction and the satellite flight direction. How to select an appropriate pixel matching algorithm to solve the accuracy of TDICCD splicing pixels in real time, find the registration position to ensure the matching of image pixels and obtain hig...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/335H04N25/00
Inventor 杨秀彬金光戴路曲宏松贺小军
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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