A noise canceling circuit that includes a sharp/flat-part determining unit
that determines whether a neighborhood of a target pixel in a digital
video signal is a sharp part or a flat part by calculating a sharpness
value indicating sharpness and an approximate noise value approximately
indicating a noise value included in the target pixel based on pixel
values of the target pixel and a predetermined number of pixels inputted
immediately before and after the target pixel, and comparing the
sharpness value and the approximate noise value, a noise extracting unit
that extracts the noise value of the target pixel by performing a noise
extraction corresponding to a result of the determination performed by
the sharp/flat-part determining unit, and a correcting unit that corrects
the pixel value of the target pixel by using the extracted noise value of
the target pixel.