Patent ID: 9681061
Date: 2017-06-13
CPC Classifications: H04N

Claim:
1. An image-processing device comprising: a flicker detecting portion that detects a flicker component in an input image signal for each frame and that generates a first flicker correction signal; a flicker-correction-signal storing portion that stores the first flicker correction signal generated by the flicker detecting portion for a plurality of latest continuous frames; a phase-displacement detecting portion that, when the most-recent first flicker correction signal is detected by the flicker detecting portion, selects the past first flicker correction signal having substantially the same phase as the most-recent first flicker correction signal from the past first flicker correction signals stored in the flicker-correction-signal storing portion, and that detects a phase displacement level with respect to the most-recent first flicker correction signal; a phase-displacement correcting portion that corrects the phase displacement of the selected past first flicker correction signal on the basis of the phase displacement level detected by the phase-displacement detecting portion; an infinite-impulse-response correction-signal combining portion that generates a second flicker correction signal by combining, at a predetermined ratio, the past first flicker correction signal, in which the phase displacement thereof has been corrected by the phase-displacement correcting portion, and the most-recent first flicker correction signal; and a flicker correcting portion that corrects the input image signal on the basis of the second flicker correction signal generated by the correction-signal combining portion.