G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 1/00 (2006.01) G06F 3/12 (2006.01) G06F 3/14 (2006.01) G06T 11/60 (2006.01) H04N 1/387 (2006.01)
Patent
CA 2256882
Methods and apparatus for blending graphics objects. In one aspect, a method includes receiving a first graphics object; rendering the first graphics object to produce a first pixel map having a first bit depth; increasing a bit depth of a second pixel map associated with a second graphics object that is to be blended with the first graphics object, where the second bit depth is less than the first bit depth; and blending the first and second pixel maps. The method may be implemented to blend graphics objects received by a printing device. In one embodiment, the invention features blending deep pixel data received by a printing device with corresponding shallow halftoned data stored in a shallow frame buffer. The invention may be implemented as a printer configured to receive a page description language description of a page to be printed, the printer including a dehalftone engine for deriving deep pixel data values for objects stored in a shallow frame buffer. In another aspect, the invention features using a pixelmap representative of underlying graphics data for transfer between a host and a remote device by transmitting a halftone representation of the pixelmap from the host to the remote device and reconstructing the pixelmap at the remote device from the halftone representation and a threshold matrix. 80764.P11
Borg Lars U.
Carlsen Stephen E.
Adobe Systems Incorporated
Smart & Biggar
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