Patent ID: 8159567

Claim:
An image processing apparatus outputting an image signal corresponding to one frame of an input video signal formed by a plurality of sub frames, comprising: a processing region detection portion including a first detection portion detecting motion of an image in a sub frame from the plurality of sub frames continuing in time, and a second detection portion detecting a component having a predetermined value or more of level difference to peripheral pixels on a pixel forming an image in the sub frame; and a gradation conversion portion including a plurality of adaptive gradation conversion portions each converting the gradation for a region of a respective component having the level difference at which motion in the corresponding sub frame is detected among the plurality of sub frames by the first and second detection portions in accordance with the motion detected value and the detected value of level difference detected at the processing region detection portion and a sub frame selecting and outputting portion selecting and outputting selectively gradation-converted sub frames by switching these sub frames for each sub frame rate, wherein the apparatus further comprises a frame rate conversion portion converting a frame of the input video signal to a plurality of sub frames having a higher rate than the respective frame and outputting the converted sub frames to the processing region detection portion and the gradation conversion portion.