Canon Kabushiki Kaisha

Sheng Wu

Alexander Will

Thomas Benjamin Sanjay Thomas

Delilah Gloria Slack-Smith

Cuong Hung Robert Cao

Cuong Hung Cao

A graphics processing method receives a plurality of contiguous pixels, as a single input, including at least a first pixel span associated with a first content type and a second pixel span associated with a second content type. At least one dithering matrix is associated with each of the pixel spans based on the corresponding content type, so that the first and the second pixel spans are associated with different dithering matrices. The single input of the received plurality of pixels is then concurrently processed using an SIMD (Single Instruction Multiple Data) type processor by referring to different dithering matrices depending on the content type of the corresponding pixel spans.

Systems and methods for efficient halftone where different dithering matrices are combined

A method of rendering a graphical object (e.g.,) on a page (), is disclosed. A region of the page containing the graphical object () is marked as output incompatible based on the graphical object () being output incompatible. A bounding box comprising the marked region is determined. A proportion of a number of the regions marked as output incompatible are determined to a total number of regions in the bounding box. A further region within the bounding box is marked as output incompatible to increase the determined proportion above a threshold. The graphical object in the marked region and the further marked region is converted into an output compatible graphical object if the determined proportion is above the threshold. The output compatible graphical object is rendered.

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Chatswood, Australia

Sheng Wu