aleleba/vectorcraft
1
0
Fork 0
mirror of https://github.com/storytold/vectorcraft.git synced 2026-10-30 12:47:13 -06:00
Code Issues Packages Projects Releases Wiki Activity

M12: build stroke skeleton graphs with junction merging

Browse Source 
Place junction clusters at their deepest pixel and prune terminal branches
by significance beyond their maximal discs. Merge overlapping junctions
and split crossings with continuing outer arms, then join degree-two runs.
Bound nodes, branches and simplification work, using checked data access.

Keep whole-blob selection, ink refinement, cap detection and fitting rules.
Test junction degrees, crossings, 24-angle lines, pruning, graph caps and
random-blob determinism. Record improved junction degrees and remaining
spur and extra-junction limitations in the centre-lines measurements.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: OpenAI <noreply@openai.com>
This commit is contained in:
andeecollard
2026-10-17 19:37:31 +07:00
committed by bflatastic
co-authored by Claude Opus 5.5 OpenAI
parent abb7c1351b
commit 0594ffe30f
5 changed files with 722 additions and 231 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/image-trace-quality.md
+70 -57
View File
@@ -1,5 +1,6 @@
# Image Trace quality
> **Last reviewed:** 2026-10-17 · **Last updated:** 2026-10-17 · **Change:** minor (Create Strokes: maximal-disc pruning and junction merging; centre-lines rerun)
> **Last reviewed:** 2026-10-17 · **Last updated:** 2026-10-17 · **Change:** minor (Create Strokes: exact crop distances and Guo–Hall thinning; centre-lines rerun)
> **Last reviewed:** 2026-10-17 · **Last updated:** 2026-10-17 · **Change:** minor (centre-lines baseline; no tracing behaviour change)
> **Last reviewed:** 2026-10-14 · **Last updated:** 2026-10-16 · **Change:** minor (Image Trace: a higher Paths never gives fewer segments on collapsed loops)
@@ -1074,16 +1075,19 @@ One trace at a time on this machine (all cores); memory is the peak allocated ab
## Centre lines
Measured 2026-10-17 with exact crop EDT and Guo–Hall thinning, against base `124b319b`.
Measured 2026-10-17 with maximal-disc pruning and junction merging, against base `3e44478f`.
Earlier preset and cost tables retain their previous measurements. Regenerate only this class:
```text
TRACE_QUALITY_CLASS=centre-lines TRACE_QUALITY_REPORT=centre-lines.md cargo test --release -p vectorcraft-trace --test quality quality_report -- --ignored --nocapture
```
The whole-blob stroke/fill rule remains `2 × maximum distance − 1 ≤ Stroke`; exact distances
replace the chamfer estimate. Guo–Hall preserves diagonal ends; the staircase pass keeps pixels
with fewer than three neighbours. The graph, ink refinement, caps and fitting retain their rules.
Junction clusters use their deepest pixel and a disc radius of `distance − 0.5` px. Terminal
branches shorter than `r + max(2, 0.5 × min(2r, Stroke))` are pruned, shortest first. Tiny
self-loops inside the junction disc are removed; overlapping junctions and geometrically split
crossings merge, and runs join through degree-two nodes. Simplification is bounded to 32 rounds;
nodes and branches are each capped at 200,000. An over-budget blob stays with the fill path.
Whole-blob selection, ink refinement, cap detection and curve fitting retain their current rules.
Code-drawn scenes only: 23 scenes, each anti-aliased (8×8 coverage samples) and hard (that coverage thresholded at 0.5). Coordinates, widths and scene Stroke values are fixed; junction/letter/crossing coordinates include the 0.27/0.41 px offset. Create Fills and Strokes are on, Stroke is the scene's limit (13 px, mix 6 px, varying 12 px), Black and White threshold 128, Noise 4, Ignore White on, other settings at their defaults. Today's tracer has no minimum-length setting (the dashed scenes specify 0 for future use).
@@ -1117,24 +1121,24 @@ Distances use dense exact centre samples (≤0.25 px), emitted curves sampled at
| curves w8 | hard | 4+0 | 0.26 / 0.61 | 0.29 / 0.63 | 98.8 | 0.00 / 0.00 | – | – |
| circles | aa | 25+0 | 0.09 / 0.23 | 0.24 / 0.30 | 97.6 | 0.00 / 0.02 | – | – |
| circles | hard | 23+0 | 0.27 / 0.64 | 0.45 / 0.75 | 96.5 | 0.02 / 0.10 | – | – |
| junctions w2 | aa | 7+0 | 0.14 / 0.33 | 0.18 / 0.35 | 100.0 | 0.12 / 0.03 | – | – |
| junctions w2 | hard | 7+0 | 0.39 / 0.87 | 0.43 / 0.91 | 100.0 | 0.15 / 0.12 | – | – |
| junctions w4 | aa | 7+0 | 0.17 / 0.64 | 0.20 / 0.46 | 99.6 | 0.27 / 5.00 | – | – |
| junctions w4 | hard | 7+0 | 0.41 / 1.10 | 0.42 / 0.98 | 99.2 | 0.30 / 5.00 | – | – |
| junctions w8 | aa | 7+0 | 0.29 / 1.52 | 0.31 / 1.44 | 95.3 | 0.30 / 0.04 | – | – |
| junctions w8 | hard | 7+0 | 0.47 / 1.42 | 0.50 / 1.44 | 95.2 | 0.33 / 0.22 | – | – |
| crossings w3 | aa | 5+0 | 0.17 / 0.71 | 0.22 / 0.69 | 100.0 | 0.05 / 0.09 | – | – |
| crossings w3 | hard | 5+0 | 0.42 / 1.07 | 0.44 / 0.94 | 99.8 | 0.20 / 0.32 | – | – |
| crossings w6 | aa | 5+0 | 0.39 / 2.12 | 0.38 / 1.74 | 92.9 | 0.10 / 0.19 | – | – |
| crossings w6 | hard | 5+0 | 0.56 / 2.27 | 0.53 / 1.88 | 91.4 | 0.23 / 0.36 | – | – |
| junctions w2 | aa | 7+0 | 0.14 / 0.34 | 0.18 / 0.35 | 100.0 | 0.12 / 0.03 | – | – |
| junctions w2 | hard | 7+0 | 0.36 / 0.82 | 0.40 / 0.85 | 100.0 | 0.14 / 0.12 | – | – |
| junctions w4 | aa | 7+0 | 0.17 / 0.72 | 0.20 / 0.49 | 99.5 | 0.27 / 5.00 | – | – |
| junctions w4 | hard | 7+0 | 0.42 / 1.11 | 0.42 / 0.98 | 99.2 | 0.30 / 5.00 | – | – |
| junctions w8 | aa | 7+0 | 0.28 / 1.49 | 0.31 / 1.45 | 95.1 | 0.30 / 0.04 | – | – |
| junctions w8 | hard | 7+0 | 0.47 / 1.36 | 0.50 / 1.47 | 95.1 | 0.33 / 0.22 | – | – |
| crossings w3 | aa | 5+0 | 0.14 / 0.34 | 0.18 / 0.31 | 100.0 | 0.05 / 0.09 | – | – |
| crossings w3 | hard | 5+0 | 0.39 / 1.14 | 0.40 / 0.93 | 99.9 | 0.20 / 0.32 | – | – |
| crossings w6 | aa | 5+0 | 0.42 / 2.16 | 0.38 / 1.79 | 92.3 | 0.10 / 0.19 | – | – |
| crossings w6 | hard | 5+0 | 0.57 / 2.27 | 0.54 / 1.95 | 90.9 | 0.25 / 0.36 | – | – |
| dashed w2 | aa | 31+0 | 0.10 / 0.22 | 0.15 / 0.25 | 100.0 | 0.02 / 0.05 | – | – |
| dashed w2 | hard | 31+0 | 0.14 / 0.36 | 0.18 / 0.38 | 100.0 | 0.09 / 0.34 | – | – |
| dashed w4 | aa | 29+0 | 0.11 / 0.28 | 0.15 / 0.31 | 100.0 | 0.01 / 0.03 | – | – |
| dashed w4 | hard | 29+0 | 0.15 / 0.42 | 0.19 / 0.41 | 100.0 | 0.11 / 0.46 | – | – |
| letters w3 | aa | 7+0 | 0.18 / 0.84 | 0.21 / 0.55 | 98.9 | 0.01 / 0.13 | – | – |
| letters w3 | hard | 7+0 | 0.31 / 0.87 | 0.31 / 0.71 | 99.3 | 0.06 / 0.20 | – | – |
| letters w5 | aa | 7+0 | 0.27 / 1.48 | 0.29 / 1.29 | 96.0 | 0.02 / 0.20 | – | – |
| letters w5 | hard | 7+0 | 0.40 / 1.53 | 0.40 / 1.27 | 96.2 | 0.05 / 0.20 | – | – |
| letters w3 | aa | 7+0 | 0.19 / 0.86 | 0.22 / 0.62 | 98.7 | 0.01 / 0.13 | – | – |
| letters w3 | hard | 7+0 | 0.33 / 0.92 | 0.34 / 0.71 | 99.0 | 0.06 / 0.20 | – | – |
| letters w5 | aa | 7+0 | 0.27 / 1.49 | 0.29 / 1.31 | 95.9 | 0.02 / 0.20 | – | – |
| letters w5 | hard | 7+0 | 0.40 / 1.48 | 0.41 / 1.29 | 96.2 | 0.05 / 0.20 | – | – |
| mix | aa | 3+1 | 0.10 / 0.21 | 12.89 / 30.00 | 57.3 | 0.03 / 0.14 | – | – |
| mix | hard | 3+1 | 0.22 / 0.43 | 12.95 / 30.00 | 57.3 | 0.08 / 0.15 | – | – |
| varying | aa | 5+0 | 0.13 / 0.28 | 0.19 / 0.31 | 99.5 | 1.89 / 4.13 | – | – |
@@ -1144,61 +1148,70 @@ Distances use dense exact centre samples (≤0.25 px), emitted curves sampled at
| scene | input | junctions ok / wrong deg / missed / extra | junction pos err | ends found | end err (signed) | spurs | IoU uniform / profile | area err uniform / profile | fill→fill % | anchors | width pts | ms |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lines w1 | aa | 0 / 0 / 0 / 76 | – | 43/48 | 0.71 (-0.69) | 88 | 0.790 / – | -6.2% / – | – | 186 | – | 6.0 |
| lines w1 | hard | 0 / 0 / 0 / 0 | – | 42/48 | 1.50 (-1.42) | 142 | 0.644 / – | -25.8% / – | – | 184 | – | 3.7 |
| lines w1 | aa | 0 / 0 / 0 / 76 | – | 43/48 | 0.71 (-0.69) | 88 | 0.790 / – | -6.2% / – | – | 186 | – | 4.6 |
| lines w1 | hard | 0 / 0 / 0 / 0 | – | 42/48 | 1.50 (-1.42) | 142 | 0.644 / – | -25.8% / – | – | 184 | – | 3.6 |
| lines w2 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.32 (-0.20) | 0 | 0.914 / – | -0.3% / – | – | 71 | – | 4.3 |
| lines w2 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.38 (-0.10) | 0 | 0.808 / – | -2.0% / – | – | 58 | – | 4.3 |
| lines w3 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.26 (-0.17) | 0 | 0.931 / – | -3.0% / – | – | 64 | – | 4.5 |
| lines w2 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.38 (-0.10) | 0 | 0.808 / – | -2.0% / – | – | 58 | – | 4.2 |
| lines w3 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.26 (-0.17) | 0 | 0.931 / – | -3.0% / – | – | 64 | – | 4.4 |
| lines w3 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.46 (-0.24) | 0 | 0.881 / – | -2.5% / – | – | 50 | – | 4.3 |
| lines w4 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.25 (-0.18) | 0 | 0.964 / – | -0.6% / – | – | 70 | – | 4.7 |
| lines w4 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.40 (-0.15) | 0 | 0.906 / – | -0.1% / – | – | 54 | – | 4.6 |
| lines w4 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.25 (-0.18) | 0 | 0.964 / – | -0.6% / – | – | 70 | – | 4.6 |
| lines w4 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.40 (-0.15) | 0 | 0.906 / – | -0.1% / – | – | 54 | – | 4.5 |
| lines w6 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.30 (-0.18) | 0 | 0.965 / – | -0.3% / – | – | 65 | – | 5.1 |
| lines w6 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.45 (-0.12) | 0 | 0.923 / – | 1.4% / – | – | 55 | – | 5.0 |
| lines w8 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.37 (-0.20) | 0 | 0.967 / – | -1.0% / – | – | 66 | – | 5.5 |
| lines w8 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.46 (-0.18) | 0 | 0.934 / – | -0.3% / – | – | 53 | – | 5.5 |
| lines w6 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.45 (-0.12) | 0 | 0.923 / – | 1.4% / – | – | 55 | – | 4.9 |
| lines w8 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.37 (-0.20) | 0 | 0.967 / – | -1.0% / – | – | 66 | – | 5.4 |
| lines w8 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.46 (-0.18) | 0 | 0.934 / – | -0.3% / – | – | 53 | – | 5.4 |
| lines w10 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.35 (-0.16) | 0 | 0.969 / – | -0.7% / – | – | 66 | – | 5.9 |
| lines w10 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.50 (-0.12) | 0 | 0.942 / – | -0.1% / – | – | 52 | – | 5.9 |
| lines w12 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.40 (-0.16) | 0 | 0.969 / – | -0.6% / – | – | 70 | – | 6.5 |
| lines w12 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.54 (-0.11) | 0 | 0.949 / – | -0.2% / – | – | 53 | – | 6.5 |
| curves w2 | aa | 0 / 0 / 0 / 0 | – | 8/8 | 0.18 (-0.13) | 0 | 0.921 / – | -0.6% / – | – | 34 | – | 4.6 |
| curves w2 | hard | 0 / 0 / 0 / 0 | – | 8/8 | 0.22 (-0.05) | 0 | 0.821 / – | -2.4% / – | – | 29 | – | 4.9 |
| lines w12 | aa | 0 / 0 / 0 / 0 | – | 48/48 | 0.40 (-0.16) | 0 | 0.969 / – | -0.6% / – | – | 70 | – | 6.4 |
| lines w12 | hard | 0 / 0 / 0 / 0 | – | 48/48 | 0.54 (-0.11) | 0 | 0.949 / – | -0.2% / – | – | 53 | – | 6.3 |
| curves w2 | aa | 0 / 0 / 0 / 0 | – | 8/8 | 0.18 (-0.13) | 0 | 0.921 / – | -0.6% / – | – | 34 | – | 4.7 |
| curves w2 | hard | 0 / 0 / 0 / 0 | – | 8/8 | 0.22 (-0.05) | 0 | 0.821 / – | -2.4% / – | – | 29 | – | 4.7 |
| curves w4 | aa | 0 / 0 / 0 / 0 | – | 8/8 | 0.56 (-0.42) | 0 | 0.949 / – | -0.8% / – | – | 35 | – | 5.1 |
| curves w4 | hard | 0 / 0 / 0 / 0 | – | 8/8 | 0.66 (-0.38) | 0 | 0.904 / – | -0.5% / – | – | 30 | – | 5.2 |
| curves w8 | aa | 0 / 0 / 0 / 0 | – | 8/8 | 2.24 (-2.01) | 0 | 0.956 / – | -0.9% / – | – | 42 | – | 5.9 |
| curves w8 | hard | 0 / 0 / 0 / 0 | – | 8/8 | 1.97 (-1.67) | 0 | 0.936 / – | -0.5% / – | – | 31 | – | 6.0 |
| circles | aa | 0 / 0 / 0 / 0 | – | 0/0 | – (–) | 32 | 0.964 / – | -0.9% / – | – | 71 | – | 7.5 |
| circles | hard | 0 / 0 / 0 / 0 | – | 0/0 | – (–) | 28 | 0.888 / – | -0.7% / – | – | 52 | – | 8.3 |
| junctions w2 | aa | 6 / 1 / 0 / 1 | 1.26 | 23/23 | 0.32 (-0.16) | 0 | 0.887 / – | 5.9% / – | – | 91 | – | 3.8 |
| junctions w2 | hard | 6 / 1 / 0 / 1 | 1.26 | 23/23 | 0.49 (-0.15) | 0 | 0.772 / – | 6.2% / – | – | 60 | – | 3.9 |
| junctions w4 | aa | 6 / 1 / 0 / 2 | 1.85 | 23/23 | 0.33 (-0.26) | 0 | 0.916 / – | 5.1% / – | – | 101 | – | 4.4 |
| junctions w4 | hard | 6 / 1 / 0 / 2 | 1.85 | 23/23 | 0.65 (-0.32) | 0 | 0.850 / – | 6.9% / – | – | 83 | – | 4.3 |
| junctions w8 | aa | 6 / 1 / 0 / 1 | 3.08 | 23/23 | 0.43 (-0.27) | 0 | 0.937 / – | 2.8% / – | – | 93 | – | 5.0 |
| junctions w8 | hard | 6 / 1 / 0 / 1 | 3.08 | 23/23 | 0.80 (-0.35) | 0 | 0.912 / – | 2.6% / – | – | 79 | – | 4.8 |
| crossings w3 | aa | 1 / 3 / 1 / 5 | 2.15 | 20/20 | 0.27 (-0.18) | 0 | 0.921 / – | -2.1% / – | – | 88 | – | 2.9 |
| crossings w3 | hard | 1 / 3 / 1 / 6 | 2.15 | 20/20 | 0.41 (-0.17) | 0 | 0.766 / – | -8.0% / – | – | 64 | – | 2.9 |
| crossings w6 | aa | 1 / 3 / 1 / 7 | 3.56 | 20/20 | 0.35 (-0.17) | 0 | 0.926 / – | -3.2% / – | – | 119 | – | 3.4 |
| crossings w6 | hard | 1 / 3 / 1 / 8 | 3.56 | 20/20 | 0.51 (-0.21) | 0 | 0.878 / – | -0.7% / – | – | 91 | – | 3.5 |
| dashed w2 | aa | 0 / 0 / 0 / 0 | – | 62/62 | 0.28 (-0.20) | 0 | 0.927 / – | -2.6% / – | – | 64 | – | 2.2 |
| dashed w2 | hard | 0 / 0 / 0 / 0 | – | 62/62 | 0.33 (-0.11) | 0 | 0.926 / – | -3.6% / – | – | 67 | – | 2.1 |
| dashed w4 | aa | 0 / 0 / 0 / 0 | – | 58/58 | 0.30 (-0.20) | 0 | 0.952 / – | -0.1% / – | – | 61 | – | 2.2 |
| curves w8 | hard | 0 / 0 / 0 / 0 | – | 8/8 | 1.97 (-1.67) | 0 | 0.936 / – | -0.5% / – | – | 31 | – | 5.9 |
| circles | aa | 0 / 0 / 0 / 0 | – | 0/0 | – (–) | 32 | 0.964 / – | -0.9% / – | – | 71 | – | 7.4 |
| circles | hard | 0 / 0 / 0 / 0 | – | 0/0 | – (–) | 28 | 0.888 / – | -0.7% / – | – | 52 | – | 8.0 |
| junctions w2 | aa | 7 / 0 / 0 / 0 | 1.17 | 23/23 | 0.32 (-0.16) | 0 | 0.889 / – | 6.1% / – | – | 84 | – | 3.7 |
| junctions w2 | hard | 7 / 0 / 0 / 0 | 1.17 | 23/23 | 0.49 (-0.15) | 0 | 0.771 / – | 4.9% / – | – | 59 | – | 3.6 |
| junctions w4 | aa | 7 / 0 / 0 / 1 | 1.62 | 23/23 | 0.33 (-0.26) | 0 | 0.919 / – | 5.0% / – | – | 100 | – | 4.1 |
| junctions w4 | hard | 7 / 0 / 0 / 1 | 1.62 | 23/23 | 0.65 (-0.32) | 0 | 0.850 / – | 7.0% / – | – | 81 | – | 4.0 |
| junctions w8 | aa | 7 / 0 / 0 / 2 | 2.76 | 23/23 | 0.43 (-0.27) | 0 | 0.937 / – | 2.7% / – | – | 93 | – | 4.7 |
| junctions w8 | hard | 7 / 0 / 0 / 1 | 2.76 | 23/23 | 0.80 (-0.35) | 0 | 0.913 / – | 2.5% / – | – | 77 | – | 4.7 |
| crossings w3 | aa | 5 / 0 / 0 / 2 | 0.25 | 20/20 | 0.27 (-0.18) | 0 | 0.935 / – | -1.1% / – | – | 74 | – | 2.8 |
| crossings w3 | hard | 5 / 0 / 0 / 5 | 0.25 | 20/20 | 0.41 (-0.17) | 0 | 0.791 / – | -7.6% / – | – | 69 | – | 2.8 |
| crossings w6 | aa | 5 / 0 / 0 / 1 | 0.25 | 20/20 | 0.35 (-0.17) | 0 | 0.925 / – | -3.6% / – | – | 112 | – | 3.3 |
| crossings w6 | hard | 5 / 0 / 0 / 4 | 0.25 | 20/20 | 0.51 (-0.20) | 0 | 0.872 / – | -2.0% / – | – | 81 | – | 3.4 |
| dashed w2 | aa | 0 / 0 / 0 / 0 | – | 62/62 | 0.28 (-0.20) | 0 | 0.927 / – | -2.6% / – | – | 64 | – | 2.0 |
| dashed w2 | hard | 0 / 0 / 0 / 0 | – | 62/62 | 0.33 (-0.11) | 0 | 0.926 / – | -3.6% / – | – | 67 | – | 1.9 |
| dashed w4 | aa | 0 / 0 / 0 / 0 | – | 58/58 | 0.30 (-0.20) | 0 | 0.952 / – | -0.1% / – | – | 61 | – | 2.1 |
| dashed w4 | hard | 0 / 0 / 0 / 0 | – | 58/58 | 0.37 (-0.08) | 0 | 0.944 / – | -1.5% / – | – | 60 | – | 2.1 |
| letters w3 | aa | 5 / 2 / 0 / 7 | 1.81 | 17/17 | 0.62 (-0.47) | 1 | 0.932 / – | -0.6% / – | – | 117 | – | 3.4 |
| letters w3 | hard | 5 / 2 / 0 / 4 | 1.81 | 17/17 | 0.38 (-0.21) | 1 | 0.865 / – | -0.1% / – | – | 92 | – | 3.4 |
| letters w5 | aa | 5 / 2 / 0 / 5 | 2.28 | 17/17 | 0.99 (-0.83) | 0 | 0.929 / – | -1.6% / – | – | 129 | – | 3.7 |
| letters w5 | hard | 5 / 2 / 0 / 5 | 2.28 | 17/17 | 1.05 (-0.79) | 0 | 0.889 / – | -1.9% / – | – | 104 | – | 3.8 |
| mix | aa | 0 / 0 / 0 / 0 | – | 6/7 | 0.24 (-0.17) | 0 | 0.986 / – | 0.1% / – | 99.7 | 11 | – | 6.9 |
| mix | hard | 0 / 0 / 0 / 0 | – | 6/7 | 0.57 (-0.46) | 0 | 0.969 / – | -0.0% / – | 99.1 | 11 | – | 6.9 |
| varying | aa | 0 / 0 / 0 / 0 | – | 10/10 | 2.03 (-1.08) | 0 | 0.735 / – | 4.8% / – | – | 22 | – | 5.4 |
| varying | hard | 0 / 0 / 0 / 0 | – | 10/10 | 1.92 (-0.94) | 0 | 0.736 / – | 5.2% / – | – | 22 | – | 5.7 |
| letters w3 | aa | 7 / 0 / 0 / 6 | 1.47 | 17/17 | 0.62 (-0.47) | 1 | 0.923 / – | -0.9% / – | – | 114 | – | 3.3 |
| letters w3 | hard | 7 / 0 / 0 / 3 | 1.47 | 17/17 | 0.38 (-0.21) | 1 | 0.859 / – | -0.6% / – | – | 81 | – | 3.3 |
| letters w5 | aa | 6 / 1 / 0 / 6 | 2.10 | 17/17 | 0.99 (-0.83) | 0 | 0.929 / – | -1.7% / – | – | 124 | – | 3.7 |
| letters w5 | hard | 6 / 1 / 0 / 8 | 2.10 | 17/17 | 1.05 (-0.79) | 0 | 0.887 / – | -2.0% / – | – | 100 | – | 3.7 |
| mix | aa | 0 / 0 / 0 / 0 | – | 6/7 | 0.24 (-0.17) | 0 | 0.986 / – | 0.1% / – | 99.7 | 11 | – | 6.5 |
| mix | hard | 0 / 0 / 0 / 0 | – | 6/7 | 0.57 (-0.46) | 0 | 0.969 / – | -0.0% / – | 99.1 | 11 | – | 6.4 |
| varying | aa | 0 / 0 / 0 / 0 | – | 10/10 | 2.03 (-1.08) | 0 | 0.735 / – | 4.8% / – | – | 22 | – | 5.2 |
| varying | hard | 0 / 0 / 0 / 0 | – | 10/10 | 1.92 (-0.94) | 0 | 0.736 / – | 5.2% / – | – | 22 | – | 5.3 |
**aa totals**: junctions 30 correct, 13 wrong degree, 2 missed, 104 extra (of 45); ends 682 of 688; spurs 121.
**aa totals**: junctions 44 correct, 1 wrong degree, 0 missed, 94 extra (of 45); ends 682 of 688; spurs 121.
**hard totals**: junctions 30 correct, 13 wrong degree, 2 missed, 27 extra (of 45); ends 681 of 688; spurs 171.
**hard totals**: junctions 44 correct, 1 wrong degree, 0 missed, 22 extra (of 45); ends 681 of 688; spurs 171.
**Scope of the improvement:** correct junction degrees rise from 30/45 to 44/45 in each variant;
missed junctions fall from two to zero. Extra junctions fall from 104 to 94 aa and 27 to 22 hard.
Spur totals remain 121 aa / 171 hard: the one-pixel-line and circle scenes contribute 120 / 170
of those, with unchanged path counts (one-pixel lines: 93 aa / 92 hard; circles: 25 aa / 23 hard).
The graph stage does not reconnect separate blobs. Raw graph tests cover straight lines at 24
angles, junctions and 20–90° crossings; these do not replace the emitted-path measurements above.
The remaining spur/extra-junction target is not met by this graph-only change.
## Revision history
| date | change |
|:--|:--|
| 2026-10-17 | M12: maximal-disc graph pruning, split-crossing merges and degree-two joins; correct junction degrees 30→44/45 aa and hard, none missed; remaining spurs unchanged. Centre-lines rerun, scores and earlier tables unchanged. |
| 2026-10-17 | M12: exact per-blob Euclidean distances and Guo–Hall thinning; centre-lines rerun on 46 inputs. Ends found: aa 638→682/688, hard 631→681/688. Whole-blob stroke/fill choice retained; preset/cost tables unchanged. |
| 2026-10-17 | M12: add the ignored centre-lines class and measure the existing Create Strokes output on 23 code-drawn scenes, aa and hard; centre/width/topology/end/coverage metrics, no new images, dependencies or behaviour |
| 2026-10-16 | Image Trace: a loop or junction-returning piece whose fit collapsed to one cubic keeps the fewest segments that hold its area and course instead of every positioned point, so a higher Paths no longer gives fewer segments on code-drawn noisy images (six falling runs to none; one other cause remains). |
docs/roadmap.md
+3 -2
View File
File diff suppressed because one or more lines are too long
docs/target-app-parity.md
+3 -1
View File
File diff suppressed because one or more lines are too long