Image processing apparatus and image processing method

Details Image processing apparatus and image processing method Image processing apparatus and image processing method

2011-08-09

2011-08-09

Hsia, Sherrie (Department: 2422)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S624000, C348S625000, C348S630000

Reexamination Certificate

active

07995148

ABSTRACT:
An image signal is resolved into a plurality of frequency components whose spatial frequencies are different from each other; a variation component of the image signal is extracted based on each of the plurality of frequency components, an absolute value of the variation component being smaller than a predetermined reference value; a level difference amount of the image signal is calculated based on the extracted variation component; and the calculated level difference amount is subtracted from the image signal.

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