H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 9/64 (2006.01) H04N 5/208 (2006.01)
Patent
CA 2143344
In video signal processing circuitry detail enhancement is done on each of three color channels (R, G & B) in response to the detail information, the enhancement of the detail in each color channel being done in reliance on separated high-spatial-frequency information originally contained in that channel, as long as it is sufficiently greater in amplitude than a reference level somewhat above that expected for thermal noise. When the amplitude of the detail information originally contained in a channel is insufficiently above that reference level, the thermal noise is suppressed by subtracting the separated high-spatial-frequency information therefrom. The same filter arrangements are used to separate high-spatial-frequency information for suppressing thermal noise in each color channel as for enhancing the detail in each color channel.
Ridout & Maybee Llp
Samsung Electronics Co. Ltd.
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