Hello Guilers, I'm pleased to announce Guile-PNG 0.7.0, Portable Network Graphics (PNG)[1] library for GNU Guile, implemented in pure scheme: https://github.com/artyom-poptsov/guile-png/releases/tag/v0.7.0
* List of user-visible changes --8<---------------cut here---------------start------------->8--- * Changes in version 0.7.0 (2023-07-19) ** Implement filter algorithms selection heuristics When an image is being saved select filtering algorithms for each image row (a "scanline") based on recommendations from RFC 2083 (see "9.6. Filter selection".) Using the recommended heuristics allows to improve compression ratio and thus to reduce image the size. ** =(png core chunk bkgd)=: Fix a typo Fix a typo in a <png-chunk:bKGD> slot name: replace "greyscale" with "grayscale". ** Update the documentation --8<---------------cut here---------------end--------------->8--- Happy hacking! - avp 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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