Limited error raster compression

摘要

Embodiments of the invention relate to an image or raster compression method that includes receiving pixel data for a raster comprising a two dimensional (2D) array of pixels where each pixel is associated with a data value. The method further includes receiving a user defined parameter defining a maximum error allowable per pixel for a compression algorithm. The raster can be divided into a number of pixel blocks where each pixel can be quantized and bit stuffed based on a number of block statistics including the maximum error allowable. The method further includes executing the compression algorithm wherein for each pixel, where an error caused by the compression algorithm is equal to or less than the maximum error allowable, and encoding the pixel data based on the compression algorithm. In certain embodiments, the compression algorithm is a non-transform compression algorithm.

主权项

1. A compression method comprising:
receiving pixel data representing a two dimensional array of pixels, wherein each pixel is associated with a data value; receiving a first user defined parameter defining a maximum error allowable per pixel for a compression processing routine; executing the compression processing routine, wherein the data value for each pixel is compressed using the compression processing routine, and wherein an error caused by the compression processing routine is equal to or less than the maximum error allowable; and encoding the pixel data based on the compression processing routine.