Hello Guilers, I'm pleased to announce Guile-PNG 0.4.1, Portable Network Graphics (PNG)[1] library for GNU Guile, implemented in pure scheme: https://github.com/artyom-poptsov/guile-png/releases/tag/v0.4.1
This release includes several bugfixes and adds an image processing procedure that converts a PNG image to grayscale colors. * List of user-visible changes --8<---------------cut here---------------start------------->8--- * Changes in version 0.4.1 (2023-05-06) ** Bugfix: =png-image-clone= now clones image data =png-image-clone= now produces full clone of the image data as expected. ** Bugfix: =png-chunk-clone= now clones chunks properly Now =png-chunk-clone= creates correct copies of pHYs, tIME, tEXt, tEXT and zTEXt chunks. ** New procedure: =png-image-filter-grayscale= This procedure allows to convert image to grayscale colors. --8<---------------cut here---------------end--------------->8--- Happy hacking! - Artyom References: 1. https://www.rfc-editor.org/rfc/rfc2083 -- Artyom "avp" Poptsov <poptsov.art...@gmail.com> Home page: https://memory-heap.org/~avp/ CADR Hackerspace co-founder: https://cadrspace.ru/ GPG: D0C2 EAC1 3310 822D 98DE B57C E9C5 A2D9 0898 A02F
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