An original image is transformed into a multi-resolution space and is thereby decomposed into images, each of which is of one of a plurality of different frequency bands. Emphasis processing is carried out on an image of a predetermined frequency band, which is among the plurality of the different frequency...http://www.google.com.au/patents/US5960123?utm_source=gb-gplus-sharePatent US5960123 - Method and apparatus for enhancing contrast in images by emphasis processing of a multiresolution frequency band
Method and apparatus for enhancing contrast in images by emphasis processing ...
