Generation of intermediate images for texture compression

Patent metadata

Field	Value
Publication number	US-8989486-B2
Application number	US-201313783760-A
Country	US
Kind code	B2
Filing date	Mar 4, 2013
Priority date	Mar 4, 2013
Publication date	Mar 24, 2015
Grant date	Mar 24, 2015

Abstract

A machine may be configured to process an uncompressed image to obtain a set of intermediate images, which may be alternatively known as working images or temporary images. Such a set of intermediate images may be used as input for an image compression algorithm that, when executed by the machine or other compression engine, outputs a compressed version of the uncompressed image. For example, a compression format called “PVRTC,” which may be used on certain portable devices, accepts a set of three intermediate images as input, specifically, one full resolution, low precision version of the original uncompressed image, plus two low resolution, low frequency color versions of the original uncompressed image. A set of intermediate images for such a compression format may be generated by the machine from the original uncompressed image.

First claim

What is claimed is:

1. A method comprising:
accessing an uncompressed image that includes a block of pixels among multiple blocks of pixels;
generating a first set of intermediate images that includes:
a first image that represents luminance values of pixels in the uncompressed image,
a second image that represents minimum luminance values in the blocks of pixels in the uncompressed image,
a third image that represents maximum luminance values in the blocks of pixels in the…

Assignees

• Zynga Inc

Inventors

• Norberg Nils Jonas
• Patel Sulabh
• Ho James
• Swistun Szymon

Classifications

• G06T15/04 Primary

  Physics · mapped topic

• G06T9/00 Primary

  Physics · mapped topic

• G06T9/008 Primary

  Physics · mapped topic