Gradation converting method of spherical biological material image
A grayscale transformation and image technology, applied in instruments, character and pattern recognition, computer parts, etc., can solve problems such as cost, complex image process, multi-processing time, etc., to eliminate image grayscale distortion, simple algorithm, and easy processing. fast effect
Inactive Publication Date: 2005-02-23
ZHEJIANG UNIV
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However, the process of calculating the reverse defect-free image corresponding to the original image is complicated and takes a lot of processing time
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A method for changing grey scale of spherical biont material image includes using calibration model of delgaG=31.725-31.725 cos(a), cos(a)=1-(r / R)2 to calibrate grey scale distortion of spherical biont material image at camera visual centre and using model of deltaG-0.04975 d-0.467 to calibrate grey scale distortion of the image deflected from camera visual centre.
Description
technical field The invention relates to computer image processing technology, in particular to a method for grayscale transformation of spherical biological material images. Background technique In recent years, with the rapid development of computer vision technology, this technology has begun to be applied to the detection and classification of agricultural products. In the process of automatic detection and grading of the external quality of spherical biological materials using machine vision and image processing technology, the image quality collected by the camera will directly affect the final detection and grading results. Therefore, it is necessary to reduce the degree of image distortion as much as possible during the image acquisition process. In addition to the image distortion caused by the limitation of the hardware equipment of the system itself, when the three-dimensional object is projected onto the two-dimensional image plane, different degrees of graysca...
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IPC IPC(8): G06K9/36G06K9/40
Inventor 应义斌徐惠荣饶秀勤付峰
Owner ZHEJIANG UNIV