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US08208175B2 Blended error diffusion and adaptive quantization 有权
混合误差扩散和自适应量化

Blended error diffusion and adaptive quantization
Abstract:
A target pixel is processed according to a blended combination of two or more error diffusion techniques. For example, the two or more techniques may include a standard error diffusion technique and rank ordered error diffusion. Additionally, or alternatively, a quantization resolution is selected for the target pixel based on information regarding the pixel. For example, a quantization resolution is selected based on a relative position of the target pixel or based on a value of the target pixel and/or values of pixels neighboring the target pixel.
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