| 摘要 |
PROBLEM TO BE SOLVED: To provide an image restoring device and a method to be executed by an iteration method, capable of restoring a deteriorated image, without searching the inverse matrix of a large-scaled matrix, and realizing the reduction of memory consumption and the shortening of a calculating time at image restoration. SOLUTION: This device is provided with a means 202 for calculating the inverted filter of an image deterioration filter, a means 502 of calculating a residual pitch image from the superimposing arithmetic operation of the image deterioration filter, and a residual image, obtained from the predicted image of a restored image and the deteriorated image and the inversed filter, a means 503 for calculating the correction quantity of the predicted image from the residual pitch image; and a means 504 for correcting and updating the predicted image from the correction quantity. Thus, even when deterioration function indicated by a complicated spiral filter is present, reduction of memory consumption or the shortening of a calculating time can be realized, as compared with a device depending on the inverse matrix of a large-scaled matrix. |
