Title :
Gradient direction similarity measure
Author :
Alkaabi, S. ; Deravi, F.
Abstract :
A new and fast similarity measure for feature point block matching is presented. It is based on the estimation of the gradient direction along which the intensity levels are changing. The algorithm has been evaluated with different types of distortion on real images to demonstrate its robustness
Keywords :
computer vision <gradient direction similarity measure>; feature extraction <gradient direction similarity measure>; gradient methods <direction similarity measure>; image matching <gradient direction similarity measure>; motion estimation <gradient direction similarity measure>; changing intensity levels; computer vision; distortion; fast similarity measure; feature point block matching; gradient direction similarity measure; horizontal gradient components; measurement uncertainty; motion estimation; real images; vertical gradient components;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20031063
