Improved direction estimation for Di Zenzo's multichannel image gradient operator.

Lianghai Jin Hong Liu Xiangyang Xu Enmin Song

Published in: Pattern Recognit. (2012)

Keyphrases

image gradient
normal direction
object boundaries
low contrast
optical flow
pattern recognition
input image
image structure
curvilinear structures
three dimensional
color images
image data
graph cuts
energy functional
directional filters