A novel algorithm for checkerboard corner identification and automatic registration

Checkerboard images are widely used in camera calibration and vision measurement. So based on Harris algorithm, according to characters of checkerboard corners’ gray level distribution, a corner identification algorithm was proposed, which can realize every exclusive corner’s extraction; According to the imaging law of checkerboard image edges and corners’ distribution, an algorithm was proposed to realize automatic registration. Simulation and real test results show that the algorithm realizes checkerboard corner identification and automatic registration. It is especially adapted to the multi-image calibration and vision measurement.