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US09092855B2 Method and apparatus for reducing noise introduced into a digital image by a video compression encoder 有权
用于通过视频压缩编码器降低引入数字图像的噪声的方法和装置

Method and apparatus for reducing noise introduced into a digital image by a video compression encoder
Abstract:
Devices, systems, methods, and other embodiments associated with reducing digital image noise are described. In one embodiment, a method includes filtering a digital image with a plurality of adaptive filters, wherein the plurality of adaptive filters include a first filter configured to filter noise surrounding one or more edges in the digital image, and a second filter configured to filter noise caused by a block based encoding of the digital image. The method further includes reducing a compression artifact from selected pixels in the digital image, wherein the compression artifact is reduced by (i) combining an output from the first filter and an output from the second filter in response to the digital image being determined to be blocky, and (ii) not combining the output from the first filter with the output of the second filter in response to the digital image not being determined to be blocky.
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