Algorithm of log end recognition based on non-linear least squares principle
Ren Hong · Computer Engineering and Applications Journal · 2012
In order to recognize log end effectively,an ellipse fitting algorithm based on non-linear least squares principle is studied.The accuracy of ellipse fitting is largely affected by the initial value.This method calculates the distance of the target image's boundary points to obtain the appropriate initial value.The smallest Euclidean distance between the boundary points and fitting ellipse is caculated by using least squares principle,thus the best fitting ellipse parameters of major axis and minor axis are gotten.The results show that the proposed algorithm has good fitting accuracy and applicability for recognizing log end.