Abstract
In this paper, we propose a new parameter estimation method for space-variant motion degraded image. At the first step, the sub-block image is defined for motion parameter estimation in an original image. Over this sub-block image, its 2-D power spectrum is calculated. Then, the degraded direction of motion is estimated to be a direction where the power ratio becomes the maximum. Here the power ratio is the ratio of a power spectrum of an estimated degradation direction to a power spectrum which is orthogonal. Secondly, to obtain the degraded motion length, its cepstrum is analyzed. The degraded length is estimated as the position where the maximum value of the cepstrum in the direction of degradation previously determined is achieved. In addition, we propose to use the scale space image using LOG operator to an observation image for obtaining this result more stably. As the results of some simulation experiments, the effectiveness of our proposal method can be concretely confirmed.
