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US 7,453,504 B2Granted
Signal processing method and apparatus, and image sensing apparatus
AssigneeCanon Kabuhsiki Kaisha
InventorEiichiro Ikeda
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Abstract
At least two high-frequency signals are generated using luminance signals of at least two color components contained in a video signal, and a high-frequency signal for edge emphasizing processing is generated from the at least two generated high-frequency signals based upon the size relationship between the at least two high-frequency signals. Edge emphasizing processing is applied to the luminance signals, which are obtained from the video signal, using the high-frequency signal for edge emphasizing processing thus generated.
Claims11
A signal processing apparatus comprising:
- a first unit configured to generate a first high-frequency signal using a luminance signal of a green color component in a video signal;
- a second unit configured to generate a second high-frequency signal using a luminance signal of a color component other than the green color component in the video signal;
- and
- a generating unit configured to generate a high-frequency signal for edge emphasizing processing by combining the first and second high-frequency signals at a ratio corresponding to a size relationship between the first and second high-frequency signals.
1 more element
A signal processing method comprising the steps of:
- generating a first high-frequency signal using a luminance signal of a green color component in a video signal;
- generating a second high-frequency signal using a luminance signal of a color component other than the green color component in the video signal;
- and
- generating a high-frequency signal for edge emphasizing processing by combining the first and second high-frequency signals at a ratio corresponding to a size relationship between the first and second high-frequency signals.
1 more element
Dependencies are inferred from the claim text.