Цифровой фильтр

摘要

This application provides a method for blending a brightness value of a source region and colour values of a destination region whereby a colour value corresponding to an index value is stored in each entry of a colour look-up table and the brightness value is treated as an index of the colour look-up table. The colour values stored in the respective entries of the colour look-up table are blended with the colour values of the destination region.