Host: Japan Society for Fuzzy Theory and Intelligent Informatics
Co-host: International Fuzzy Systems Association, IEEE Computational Intelligence Society Japan Chapter
For the estimation of an out-of-focus PSF, it is effective to obtain the radius of shade ring which appears on the amplitude spectrum of an observed image. However, the estimation is very difficult in case where the observed image is not so blurred and corrupted by an additive noise. Because the shade ring tends to get lost in high frequency region dominated by low intensity. This paper proposes a robust PSF estimation method based on the concept of vector convergence. The vector convergence focuses attention only on the vector direction and extracts contrast invariant features. The effectiveness of the proposed method is confirmed by some computer simulations.
