Computation of orthogonal Fourier-Mellin moments in two coordinate systems.
The computing method for orthogonal Fourier-Mellin moments in a polar coordinate system is presented in detail. The image expressed in a Cartesian system has to be transformed into a polar coordinate system first when we calculate the orthogonal Fourier-Mellin moments of the image in a polar coordinate system, which will increase both computational complexity and error. To solve the problem, a new direct computing method for orthogonal Fourier-Mellin moments in a Cartesian coordinate system is proposed, which can avoid the image transformation between two coordinate systems and eliminate the rounding error in coordinate transformation and decrease the computational complexity.
Beijing University of Posts and Telecommunications, School of Electronic Engineering, Beijing 100876, China. frank.hht@qq.com
Hai-Tao
HT
Hu
Ping
P
Zi-Liang