Multi-level semi-vector error diffusion

Details Multi-level semi-vector error diffusion Multi-level semi-vector error diffusion

G - Physics

06

T

G06T 5/00 (2006.01) H04N 1/52 (2006.01) H04N 1/60 (2006.01)

Patent

CA 2349314

A method and apparatus for multi-level color error diffusion employs semi- vector quantization. When operating on image data comprising three color separations, the method employs a vector quantization for the two separations with the most visually perceptive color output to generate a multi-level output pixel for each separation based on the sum and a difference of the input pixel values for the two separations. The method generates multilevel output pixels for the third color separation using scalar error diffusion.

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