Description: X-corner patterns are most widely used in camera calibration. In order to do online calibration for blurred
image, we propose a new algorithm for X-corner detection basedon the special character of X-corners: the pattern is
symmetricalandthegray contrast greatywitheachother Inthe algorithmthe operator SV isdesignedto recognizeX-corners
whichconsistsof symmetry operatorSandvarianceoperatorV. Themethodissmart, easy toexecuteandrobust to rotation,
intensity change. It isalso robust to imagenoiseandedgeblurwhere the interventionofmanisnot required. Experimental
results showthat the proposedalgorithmcanachieve excellent effects inX-cornersdetecting. inonline camera calibration.
Keywords X-corners, corner detecting, edge blur, camera calibration, Harrisdetector
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