添加数据增强方案以及扩散生成模型的想法

tools/diffusion/prepare_patch_dataset.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+"""
+Prepare raster patch dataset and optional condition maps for diffusion training.
+
+Planned inputs:
+- --src_dirs: one or more directories containing PNG layout images
+- --out_dir: output root for images/ and conditions/
+- --size: patch size (e.g., 256)
+- --stride: sliding stride for patch extraction
+- --min_fg_ratio: minimum foreground ratio to keep a patch (0-1)
+- --make_conditions: flags to generate edge/skeleton/distance maps
+
+Current status: CLI skeleton and TODOs only.
+"""
+from __future__ import annotations
+
+import argparse
+from pathlib import Path
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Prepare patch dataset for diffusion training (skeleton)")
+    parser.add_argument("--src_dirs", type=str, nargs="+", help="Source PNG dirs for layouts")
+    parser.add_argument("--out_dir", type=str, required=True, help="Output root directory")
+    parser.add_argument("--size", type=int, default=256, help="Patch size")
+    parser.add_argument("--stride", type=int, default=256, help="Patch stride")
+    parser.add_argument("--min_fg_ratio", type=float, default=0.02, help="Min foreground ratio to keep a patch")
+    parser.add_argument("--make_edge", action="store_true", help="Generate edge map conditions (e.g., Sobel/Canny)")
+    parser.add_argument("--make_skeleton", action="store_true", help="Generate morphological skeleton condition")
+    parser.add_argument("--make_dist", action="store_true", help="Generate distance transform condition")
+    args = parser.parse_args()
+
+    out_root = Path(args.out_dir)
+    out_root.mkdir(parents=True, exist_ok=True)
+    (out_root / "images").mkdir(exist_ok=True)
+    (out_root / "conditions").mkdir(exist_ok=True)
+
+    # TODO: implement extraction loop over src_dirs, crop patches, filter by min_fg_ratio,
+    # and save into images/; generate optional condition maps into conditions/ mirroring filenames.
+    # Keep file naming consistent: images/xxx.png, conditions/xxx_edge.png, etc.
+
+    print("[TODO] Implement patch extraction and condition map generation.")
+
+
+if __name__ == "__main__":
+    main()