A process for the recovery of variance data or standard deviation data for the reduction of noise and digital photographing apparatus, which a variance data or standard deviation data for the reduction of noise recording medium comprising storing

摘要

A process for the production of variance data or standard deviation data for the efficient reduction of noise in an image is created. The process comprises (a) the dividing an image into a plurality of clusters; (b) frequently the checking of the speed data of the data values of the pixels contained in each cluster; (c) recovering a weighted average of the data values of the pixels contained in each cluster; (d) recovering a variance or a standard deviation of the data values of the pixels contained in each cluster using the weighted mean value; and (e) the recovery of variance data or standard deviation data in accordance with weighted average values with the use of the weighted average value and the variance or the standard deviation in each cluster. A digital photographic apparatus is also created, which comprises a recording medium, the variance data or standard deviation data for the efficient reduction of noise in an image, which in accordance with the above process were obtained, stores.