Geometry correction method of sloped shoot image

Abstract

Different angle shot image from CCD will affect the accuracy of image measurement. To improve the measurement accuracy, a new geometry correction method for angle shot image is presented. Establishing geometry relations between the image plane and the object plane, which is based on the theory of camera imaging, we can obtain the adjusted geometry parameter which can adjust measurement error, increase digital image measuring accuracy, reduce the shooting angle limit and expand the application scope of image measurement in a certain degree. Experiment indicate that this method shows perfect results, the range of uncertainty is less than two image elements.