Patent ID: 8749581
Filing Date: 2014-06-10
Classification: G09G,H04N

Abstract:
1. In a blend zone that uses a blend curve for overlapping at least two projector images, a method of reducing visual artefacts, comprising: determining a maximum intensity variance for each pixel group within said blend curve, said maximum intensity variance being based on a blend multiplier selected to achieve a net light intensity specific to the location of said pixel group within said blend curve; for each pixel group, determining a first adjusted blend multiplier wherein said blend multiplier is increased by at least a portion of said maximum intensity variance; for each pixel group, determining a second adjusted blend multipler wherein said blend multiplier is decreased by said at least a portion of said maximum intensity variance; and wherein the average pixel intensity of each said pixel group after application of said first and second adjusted blend multipliers remains equal to said net light intensity of said pixel group within said blend curve while reducing patterning artefacts within said block of pixels.