MOTION DETECTOR, IMAGE PROCESSING SYSTEM, MOTION DETECTING METHOD, PROGRAM, AND RECORDING MEDIUM

摘要

In an area where the images change gradually, accurate detection of a still image area and a motion image one has been difficult. A motion detector comprises a small amplitude area detecting means (9) for measuring the amplitudes in an area including and adjoining predetermined pixel of the image, a motion information extracting means (10) for measuring the temporal variation of the image, a comparing means (2) for judging from the measured variation at least whether the predetermined pixel is a motion pixel or not, a motion image pixel counting means (3) and a motion signal generating means (11) for generating a motion signal related to the predetermined pixel according to the result of the judgment. The smaller are the measured amplitude, the more are corrected the gain of the variation at least related to the predetermined pixel, thus measuring temporal variation of the image.