Patent ID: 8456577
Filing Date: 2013-06-04
Classification: H04N

Abstract:
1. A method for producing a chroma key comprising: determining an area of interest for a composite scene by overlaying a foreground key on a background scene and by identifying pixels in the background scene that are within the foreground key; generating a chroma key based on at least a luminance of the pixels identified within the area of interest and by adapting luma in the foreground key to luma in the area of interest; calculating an average luminance of the pixels within the area of interest; and calculating an average luminance of a sampled area in the foreground key, wherein the luma in the foreground key are adapted to luma in the area of interest by applying a difference between the average luminance of the pixels in the area of interest and the average luminance of the foreground key and applying the difference to the foreground scene for every field.