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webp-lossless-bitstream-spec: simplify abstract

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This syncs the document with the draft RFC.

Change-Id: Ie6e9c9a50527378cb1b24e2c130a0a09855fe96e
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James Zern 2023-10-06 11:46:24 -07:00
parent cdbf88aed2
commit 40afa9269b
1 changed files with 5 additions and 7 deletions
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doc/webp-lossless-bitstream-spec.txt
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@ -19,13 +19,11 @@ Abstract
WebP lossless is an image format for lossless compression of ARGB images. The
lossless format stores and restores the pixel values exactly, including the
color values for pixels whose alpha value is 0. The format uses subresolution
images, recursively embedded into the format itself, for storing statistical
data about the images, such as the used entropy codes, spatial predictors, color
space conversion, and color table. A universal algorithm for sequential data
compression (LZ77), prefix coding, and a color cache are used for compression of
the bulk data. Decoding speeds faster than PNG have been demonstrated, as well
as 25% denser compression than can be achieved using today's PNG format.
color values for fully transparent pixels. A universal algorithm for sequential
data compression (LZ77), prefix coding, and a color cache are used for
compression of the bulk data. Decoding speeds faster than PNG have been
demonstrated, as well as 25% denser compression than can be achieved using
today's PNG format.
* TOC placeholder