Patent ID: 7081892
Filing Date: 2006-07-25
Classification: G06T

Abstract:
1. A method of producing a computer display image that includes depth of field information, the method comprising: producing a sharp image of a scene; producing a blur image of the scene; and producing RGBA image comprising the sharp image and blur image that are blended using z-buffer data as an alpha channel to control the blending of the sharp image and blur image such that the produced alpha channel RGBA image provides an image having depth of field information when the alpha channel RGBA is received by a graphics processor and rendered for display on a computer display device; further comprising producing a sequence of computer display images that provide a rack focus effect that appears to shift image focus between foreground of the scene and background of the scene, wherein each image of the sequence provides an image having depth of field information when the alpha channel RGBA is received by a graphics processor and rendered for display on a computer display device.