Initial commit: RE tooling and docs for The I of the Dragon localization/HD

2026-09-20 09:57:07 +08:00
commit caf7376019
26 changed files with 1624 additions and 0 deletions
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+from PIL import Image
+import sys
+p = sys.argv[1]
+img = Image.open(p).convert("L")
+W, H = img.size
+px = img.load()
+# edge density per row: count |v(x)-v(x-2)| > 40
+rows = []
+for y in range(H):
+    c = 0
+    for x in range(2, W):
+        if abs(px[x, y] - px[x-2, y]) > 45:
+            c += 1
+    rows.append(c)
+# report top rows grouped
+thr = max(20, sorted(rows)[int(H*0.97)])
+print("W,H", W, H, "row-edge threshold", thr)
+bands = []
+y = 0
+while y < H:
+    if rows[y] > thr:
+        y0 = y
+        while y < H and rows[y] > thr:
+            y += 1
+        bands.append((y0, y, max(rows[y0:y])))
+    y += 1
+for b in bands[:40]:
+    print("band y=%d..%d maxedge=%d" % b)