Patent ID: 7676111
Filing Date: 2010-03-09
Classification: H04N

Abstract:
1. An image processing device comprising: a difference generating section which generates, in every pixel unit, a difference level of an image between frames from a current signal of a dynamic image in which a plurality of frames continue and a noise removed frame delay signal obtained after the current signal is subjected to noise removal processing and delay processing for one frame; a histogram generating section to generate a histogram indicating a frequency distribution of the difference levels between the frames by use of a difference level excluding a difference corresponding to a pixel in which predetermined or more image changes are generated among the difference levels generated by the difference generating section; a judgment section which judges reliability of the histogram generated by the histogram generating section based on one of a property of the histogram and comparison with the previously obtained histogram; and a noise amount deciding section which decides a noise amount based on the histogram in a case where the judgment section judges that the reliability is not less than a predetermined value.