feat(math-ct): ЦТ 2020 V1 — 32 задания (5 с PNG-изображениями) + инфраструктура PDF→PNG

2026-06-02 09:44:23 +03:00
parent f2b0db4d9a
commit 44e262b025
9 changed files with 342 additions and 0 deletions
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+"""
+Crop a question row from a rendered PDF page PNG.
+
+Usage:
+  python crop_question_row.py <page_png> <x0> <y0> <x1> <y1> <out_png>
+
+  Coordinates are NORMALIZED (0.0-1.0) relative to page dimensions.
+  Add --padding 0.01 for extra border (default 0.005).
+
+Example:
+  python crop_question_row.py page_005.png 0.0 0.12 1.0 0.22 2019_v1_a7.png
+"""
+import sys
+import argparse
+from PIL import Image
+
+def crop(page_png, x0, y0, x1, y1, out_png, padding=0.005):
+    img = Image.open(page_png)
+    w, h = img.size
+    px0 = max(0, int((x0 - padding) * w))
+    py0 = max(0, int((y0 - padding) * h))
+    px1 = min(w, int((x1 + padding) * w))
+    py1 = min(h, int((y1 + padding) * h))
+    cropped = img.crop((px0, py0, px1, py1))
+    cropped.save(out_png)
+    print(f'Saved {out_png} ({cropped.width}x{cropped.height})')
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('page_png')
+    parser.add_argument('x0', type=float)
+    parser.add_argument('y0', type=float)
+    parser.add_argument('x1', type=float)
+    parser.add_argument('y1', type=float)
+    parser.add_argument('out_png')
+    parser.add_argument('--padding', type=float, default=0.005)
+    args = parser.parse_args()
+    crop(args.page_png, args.x0, args.y0, args.x1, args.y1, args.out_png, args.padding)