Corner Detection Algorithm for Image Mosaic
Meijiao Wang · 2009
An improved algorithm for corner detection was proposed by analyzing the theory of Harris operator and its disadvantage.The main improved aspects were suggested just as follows:First,the new grads operators were used to get image derivative.Second,the method adopted improved corner response function for avoiding the randomicity of k va-lue.Then this algorithm automatically ascertained corner extraction threshold based on the first one in image sequence.Last,in order to improve the precision for corner extraction,the method obtained sub-pixel corners within 8 neighborhoods of the target pixel.Experiment results show that the computation time of improved algorithm enhances about 61.3%,and it can be applied to image mosaic better.