Patent ID: 8659618
Filing Date: 2014-02-25
Classification: H04N

Abstract:
1. A system, comprising: an input unit configured to receive an input signal Yin; a vertical enhancement unit configured to perform a vertical enhancement of an edge of the input signal Yin to generate an output YEV; a horizontal enhancement unit configured to perform a horizontal enhancement of the edge of the input signal Yin to generate an output YEH; a local gradient analysis unit configured to generate a local gradient direction GradDir and a local gradient magnitude GradMag based at least partly upon the input signal Yin; a mixer configured to generate an output Yout by mixing the output YEV with the output YEH using the local gradient direction GradDir, wherein a strength of each of the vertical and the horizontal enhancements of the edge of the input signal Yin used to generate the output Yout is adaptive by the local gradient direction GradDir as a multiplier; and an output unit configured to output the output Yout.