Patent ID: 8174624

Claim:
An image processing apparatus which processes and outputs an image signal input for each frame, comprising: a division unit which divides one frame of interest into a plurality of sub-frames; an acquisition unit which acquires a first image signal constituted by high-frequency components and a second image signal constituted by low-frequency components from an image signal of a sub-frame of interest; a unit which generates a third image signal by multiplying the second image signal by a constant value K satisfying 0<K<1; a process unit which outputs the third image signal when a fourth image signal obtained by adding the first image signal and the third image signal falls within a predetermined range and outputs, when the fourth image signal includes a portion exceeding the range, an image signal obtained by correcting the third image signal so as that the portion does not exceed the range; a unit which generates a composition signal composed of the image signal output from said process unit and the first image signal; a unit which generates a fifth image signal by multiplying the third image signal by a constant value (2−γ) when γ represents a correction amount for the third image signal from said process unit; and an output unit which outputs one of the composition signal and the fifth image signal as the sub-frame of interest.