Zernike moment combine Sigmoid fitting method in edge detection
Liu Mingji · Computer Engineering and Applications Journal · 2014
An improved method based on Zernike moment and Sigmoid fitting is presented in order to improve the weakness of low accuracy when Zernike moment edge detection method detects non-straight edges. This papwr uses Zernike moment edge detection method to detect edge, then uses Sigmoid fitting method to detect edge, and adopts weighted sum method to fix the detection result according to the results of two methods, the results are what we want. Both ideal images and actual industrial CT images are used to demonstrate its accuracy, the experimental results show that the detection precision of the method proposed has improved one order of magnitude comparing with Zernike moment edge detection method when detecting non-straight edges.