BBS:      TELESC.NET.BR
Assunto:  src/syncterm/ripdiff.py
De:       Deuc¨
Data:     Sun, 15 Mar 2026 22:55:32 -0700
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https://gitlab.synchro.net/main/sbbs/-/commit/10b95605518abe3e24c2a022
Added Files:
	src/syncterm/ripdiff.py
Log Message:
Add ripdiff.py for pixel-accurate RIPscrip rendering comparison

Compares DOSBox/RIPterm captures (640x350) against SyncTERM captures
(640x480) by upscaling the 350-row image using the same YCoCg-space
interpolation algorithm SyncTERM uses internally (interpolate_height
from scale.c). Supports XWD and PNG input, EGA palette snapping, and
per-channel threshold tolerance.

Co-Authored-By: Claude Opus 4.6 
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  mSynchronetn  hgVertrauen n hHome of Synchronet n gh[vert/cvs/bbs].synchro.net

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