Aimed at the problem that it's difficult to improve the identify precision of the linear CCD scan image,the influence of scan movement on image quality is deeply analyzed,and the key reason resulting in the bad identify precision is pointed out,i.e.,non uniformity of row spacing and the bad repetition of scan location.Based on that,the methodto search the edge spot along the pixel array orientation and to identify the coordinate of the circle center by curve fitting is proposed.This method avoided the influ...
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