Patent ID: 8174592
Filing Date: 2012-05-08
Classification: G06T,H04N

Abstract:
1. A color interpolation device comprising: a gradient grade calculation block calculating horizontal derivatives and vertical derivatives using composite video signals output from a current pixel and adjacent pixels and calculating a gradient grade using a linear composition of the horizontal derivatives and vertical derivatives; a horizontal/vertical YUV calculation block calculating horizontal YUV components and vertical YUV components of the current pixel from the composite video signals; a YUV/RGB conversion circuit mixing the horizontal YUV components and the vertical YUV components based on the gradient grade and converting mixed YUV components to RGB components, wherein the YUV/RGB conversion circuit comprises, a controlled de-saturated UV calculation block mixing each of the mixed UV components and each of the fully de-saturated UV components and calculating controlled de-saturated UV components, and a YUV/RGB conversion block converting a mixed Y component and the controlled de-saturated UV components to RGB components.