| import csv |
| import math |
| import os |
| from PIL import Image, ImageDraw |
|
|
| IMG_SIZE = 512 |
|
|
|
|
| def draw_shape(draw, shape, cx, cy, size_ratio): |
| side = size_ratio * IMG_SIZE |
| if shape == "circle": |
| r = side / 2 |
| draw.ellipse([cx - r, cy - r, cx + r, cy + r], fill=255) |
|
|
| elif shape == "square": |
| h = side / 2 |
| draw.rectangle([cx - h, cy - h, cx + h, cy + h], fill=255) |
|
|
| elif shape == "equilateral triangle": |
| h = side * math.sqrt(3) / 2 |
| pts = [ |
| (cx, cy - h / 2), |
| (cx - side / 2, cy + h / 2), |
| (cx + side / 2, cy + h / 2), |
| ] |
| draw.polygon(pts, fill=255) |
|
|
|
|
| def generate_images(csv_file, output_dir): |
| with open(csv_file, "r", encoding="utf-8") as f: |
| rows = list(csv.DictReader(f)) |
|
|
| os.makedirs(output_dir, exist_ok=True) |
|
|
| for row in rows: |
| id_val = row["id"].strip() |
| shape = row["shape"].strip() |
| cx = float(row["center_x"]) |
| cy = float(row["center_y"]) |
| size_ratio = float(row["size_ratio"]) |
|
|
| img = Image.new("L", (IMG_SIZE, IMG_SIZE), 0) |
| draw = ImageDraw.Draw(img) |
| draw_shape(draw, shape, cx, cy, size_ratio) |
|
|
| img.save(os.path.join(output_dir, f"id_{id_val}.png")) |
|
|
| print(f"Done: {output_dir} ({len(rows)} images)") |
|
|
|
|
| if __name__ == "__main__": |
| generate_images( |
| "metadata/Task_Geometric_metadata.csv", |
| output_dir="data/Task_Geometric" |
| ) |
|
|
