Patent ID: 8532422

Claim:
An image restoring apparatus that estimates original image information from only degraded image information in which unnecessary information is mixed in with the original image information, the image restoring apparatus comprising: a correlation computation section that calculates a correlation value of estimation error when a system state quantity at time n+1 that includes the original image information is estimated based on information until time n or time n+1 for degraded image information of only time n; a weighting factor calculation section that calculates a weighting factor for specifying a relationship of an optimum estimate of the state quantity at time n+1 based on information until time n+1, an optimum estimate of the state quantity at time n+1 based on information until time n, and estimation error of an observed quantity including the degraded image information, using a correlation value calculated by the correlation computation section, preset blurring information, and observed noise information, for degraded image information of only time n; and an optimum estimate calculation section that calculates an optimum estimate of the state quantity at time n+1 based on information until time n or time n+1, using a weighting factor calculated by the weighting factor calculation section, for degraded image information of only time n, wherein the degraded image information is configured by means of pixel information of a processing-object block composed of a pixel area of interest and a surrounding pixel area, and the time n represents an order (nth) of processing of the processing-object block.