A real time color gamut mapping using tetrahedral interpolation for digital tv color reproduction enhancement

In this paper, a tetrahedral interpolation technique is utilized to build new type architecture for real time color gamut mapping which has been known to be one of promising methods to enhance display quality of digital and/or high-definition TV. It is common practice to simplify the required complex computations for the mapping by adopting three-dimensional interpolation techniques. If carefully arranged, the tetrahedral interpolation can be computed with simpler operations compared to the other types of interpolation such as a cubic or three-bilinear interpolation in the conventional reduced resolution look-up table. With these simplified operations, the proposed method reduces the required computational cost and the complexity of hardware implementation. The proposed method is implemented in VHDL code and the simulation results show that the proposed method reduces the number of gates needed to hardware implementation without loss of color reproduction quality.