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LR-IMP-CAMERA-COVERAGE: verify Canon EOS RP CR3 pixel for pixel

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Four CC0 EOS RP samples from raw.pixls.us (lossless RAW and C-RAW, full
frame and 1.6x crop mode) now have exact full-sensor regressions against
the DNGLab 0.8.0 black-box oracle (Windows binary, checked first against
the documented M50 RAW hash). The decoder already matched; no decoder
change was needed. Crop mode is a single 4032x2656 tile, full frame two
3192-wide tiles.

docs/cr3.md also records that the white level is Canon's specular white,
which at the -1/3-stop ISOs (e.g. 11062 at ISO 5000) is well below the
sensor's saturation point.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
smposara
2026-10-13 08:59:30 +02:00
co-authored by Claude Opus 5.5
parent c435d143de
commit 26df1c5cdf
7 changed files with 72 additions and 17 deletions
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xtask/src/main.rs
+4
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@@ -341,6 +341,10 @@ const RAW_SAMPLES: &[(&str, &str)] = &[
("cr3-canon-r100-craw.cr3", "https://raw.pixls.us/getfile.php/7897/nice/Canon%20-%20EOS%20R100%20-%20CRAW%20%283:2%29.CR3"),
("cr3-canon-r8-raw.cr3", "https://raw.pixls.us/getfile.php/6585/nice/Canon%20-%20EOS%20R8%20-%203:2.CR3"),
("cr3-canon-r8-craw.cr3", "https://raw.pixls.us/getfile.php/6587/nice/Canon%20-%20EOS%20R8%20-%203:2.CR3"),
("cr3-canon-rp-raw.cr3", "https://raw.pixls.us/getfile.php/4674/nice/Canon%20-%20EOS%20RP%20-%203:2.CR3"),
("cr3-canon-rp-craw.cr3", "https://raw.pixls.us/getfile.php/4672/nice/Canon%20-%20EOS%20RP%20-%203:2.CR3"),
("cr3-canon-rp-raw-crop.cr3", "https://raw.pixls.us/getfile.php/4673/nice/Canon%20-%20EOS%20RP%20-%203:2.CR3"),
("cr3-canon-rp-craw-crop.cr3", "https://raw.pixls.us/getfile.php/4671/nice/Canon%20-%20EOS%20RP%20-%203:2.CR3"),
(
"dng-adobe-canon-5d3-linear-lj92.dng",
"https://raw.pixls.us/getfile.php/1032/nice/Adobe%20DNG%20Converter%20-%20Canon%20EOS%205D%20Mark%20III%20-%20Lossless%20JPEG%20compression%2C%20rgb%20%283:2%29.DNG",