XPost: linux.debian.devel
Package: wnpp
Severity: wishlist
Owner: Nicolas Peugnet <
nicolas@club1.fr>
* Package name : didder
Version : 1.3.0-1
Upstream Author : makeworld
* URL :
https://github.com/makeworld-the-better-one/didder
* License : GPL-3.0
Programming Lang: Go
Description : An extensive, fast, and accurate command-line image dithering tool.
didder is an extensive, fast, and accurate command-line image dithering
tool. It is designed to work well for both power users as well as
pipeline scripting. It is backed by the author's dithering library
(
https://github.com/makeworld-the-better-one/dither), and is unique
in its correctness and variety of dithering algorithms. It provides
many options, while being correct (linearizing the image, weighting
channels by luminance).
.
Types of dithering supported
.
* Random noise (in grayscale and RGB)
* Ordered Dithering
* Bayer matrix of any size (as long as dimensions are powers of two)
* Clustered-dot - many different preprogrammed matrices
* Some unusual horizontal or vertical line matrices
* Yours? You can provide your own ordered dithering matrix in JSON format
* Error diffusion dithering
* Simple 2D
* Floyd-Steinberg, False Floyd-Steinberg
* Jarvis-Judice-Ninke
* Atkinson
* Stucki
* Burkes
* Sierra/Sierra3, Sierra2, Sierra2-4A/Sierra-Lite
* Steven Pigeon (
https://hbfs.wordpress.com/2013/12/31/dithering/)
* Yours? You can provide your own error diffusion matrix in JSON format
.
Features
.
* Set palette using RGB tuples, hex codes, number 0-255 (grayscale), or
SVG color names (
https://www.w3.org/TR/SVG11/types.html#ColorKeywords)
* Optionally recolor image with a different palette after dithering
* Set dithering strength
* Image is automatically converted to grayscale if palette is grayscale
* Force image to grayscale with --grayscale
* Change image saturation, brightness, or contrast before dithering
* Read EXIF rotation tags by default (disabled with --no-exif-rotation)
* Downscale image before dithering, keeping aspect ratio
* Upscale image after dithering, without producing artifacts
* Supports input image of types JPEG, GIF (static), PNG, BMP, TIFF
* Output to PNG or GIF
* Process multiple images with one command
* Combine multiple images into an animated GIF
* Uses all CPU cores when possible
* Support images with transparency (alpha channel is kept the same)
This is a fine little CLI tool that is easy to use, and all of its
dependencies are already packaged in Debian.
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)