Patent ID: 7330196
Filing Date: 2008-02-12
Classification: G06T

Abstract:
1. An image processing apparatus comprising: an overlay detector configured to perform an overlay detection to detect an overlay of first and second original images which are rendered based on first and second rendering data by first and second graphic rendering instructions, respectively; and a memory storing the first rendering data contained in the first graphic rendering instruction, wherein said first and second graphic rendering instructions are sequentially processed, and said first graphic rendering instruction is input immediately preceding said second graphic rendering instruction, wherein the overlay detector specifies a portion of the first original image to be overlaid by the second original image upon detecting an overlay of the first and second original images, modifies said first rendering data to omit the specified portion, draws a third output image based on the modified first rendering data in which the specified portion of the first original image is deleted, and stores the modified first rendering data and the second rendering data into the memory, and wherein if the first original image and the second original image have no overlaid portion, said image processing apparatus renders the first rendering data, and upon rendering said first rendering data, the overlay detector stores the second rendering data presently being processed into the memory.