Patent ID: 7054488
Filing Date: 2006-05-30
Classification: G06F,G06T

Abstract:
1. A method for determining transparency in image extraction, said method comprising the steps of: creating a first mask bitmap by combining a first image and a second image; wherein said first image and said second image have the same size and are the same except for transparent areas; creating a second mask bitmap which displaces pixels of first rgb values in said first image to second rgb values; and applying said first mask bitmap to said second mask bitmap by performing an ‘or’ operation on said first mask bitmap and said second mask bitmap; wherein the pixels in the resulting bitmap of said ‘or’ operation which have said first rgb values are transparent; wherein the pixels in the resulting bitmap of said ‘or’ operation, corresponding to the pixels in said first image that had said first rgb values, have said second rgb values; identifying the pixels in the resulting bitmap of said ‘or’ operation which have said first rgb values as transparent.