Method for adaptively sharpening electronic images

Details Method for adaptively sharpening electronic images Method for adaptively sharpening electronic images

H - Electricity

04

N

350/41

H04N 9/04 (2006.01) G06T 5/20 (2006.01)

Patent

CA 2013750

Method and apparatus for sharpening edges and details of a digital image without amplifying noise in the digital image provide an output image which is the sum of the input image and its adaptively-amplified high frequency components, which adaptively amplified high frequency components are obtained by subtracting a low-pass filtered image from the input image. An adaptive amplification factor for the high frequency components is determined as a function of a variance of the pixel values surrounding a pixel and the noise power of the imaging system.

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