Y. Kaneko et al., IMPROVEMENT OF MOTION ESTIMATION ACCURACY USING GRADIENT VECTOR DISTRIBUTION IN ADVANCED PICTURE CODING, IEEE transactions on broadcasting, 42(3), 1996, pp. 237-244
This paper describes methods to improve the accuracy of a gradient-bas
ed motion estimation method that uses eigenvalue algorithm, First, we
propose the reliability indexes of estimated motion vector, Next, we c
lassify motion images by the proposed indexes into categories and anal
yze the characteristics of each classified image, According to the cat
egories of the image characteristics, we use different types of method
s in order to improve the accuracy of each motion estimation. Simulati
on results show that these proposed methods are effective in improving
the accuracy of motion estimation.