| """Robustness-check variant of the occluded images: every occluder shape is |
| filled BLUE with a YELLOW border, regardless of the colors stored in the |
| annotations. Geometry (bbox/polygon positions) is taken verbatim from |
| annotations.json so only the occluder color changes vs. the original |
| `_occluded.png` set.""" |
| import json |
| import shutil |
| from pathlib import Path |
| from PIL import Image, ImageDraw |
|
|
| SRC_DIR = Path("data/combined_output") |
| ANNOTATIONS_PATH = SRC_DIR / "annotations.json" |
| OUT_DIR = Path("data/combined_output_blue") |
|
|
| FILL_COLOR = "#0000ff" |
| BORDER_COLOR = "#eeff00" |
| BORDER_WIDTH = 2 |
|
|
| OUT_DIR.mkdir(exist_ok=True) |
| |
| shutil.copy(ANNOTATIONS_PATH, OUT_DIR / "annotations.json") |
|
|
| with open(ANNOTATIONS_PATH) as f: |
| data = json.load(f) |
|
|
| made = 0 |
| for entry in data: |
| original_file = SRC_DIR / entry["original_file"] |
| if not original_file.exists(): |
| print(f"Missing original: {original_file}") |
| continue |
|
|
| img = Image.open(original_file).convert("RGBA") |
| overlay = Image.new("RGBA", img.size, (0, 0, 0, 0)) |
| draw = ImageDraw.Draw(overlay) |
|
|
| for ann in entry["annotations"]: |
| if ann["type"] == "bbox": |
| draw.rectangle( |
| [ann["x1"], ann["y1"], ann["x2"], ann["y2"]], |
| outline=BORDER_COLOR, |
| fill=FILL_COLOR, |
| width=BORDER_WIDTH, |
| ) |
| elif ann["type"] == "polygon": |
| points = [(p["x"], p["y"]) for p in ann["points"]] |
| draw.polygon(points, outline=BORDER_COLOR, fill=FILL_COLOR) |
| |
| draw.line(points + [points[0]], fill=BORDER_COLOR, width=BORDER_WIDTH) |
|
|
| result = Image.alpha_composite(img, overlay).convert("RGB") |
| out_path = OUT_DIR / f"{original_file.stem}_occluded.png" |
| result.save(out_path) |
| made += 1 |
|
|
| print(f"Done. Generated {made} blue-occluded images in {OUT_DIR}/") |
|
|
