51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
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import cv2
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import os
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import numpy as np
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def debug_unwarp_viz():
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img_path = "seal_cropped.png"
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img = cv2.imread(img_path)
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if img is None: return
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h, w = img.shape[:2]
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cx, cy = w // 2, h // 2
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radius = min(cx, cy)
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# We'll save a few unwarps with different radius ranges
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ranges = [
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(0.6, 0.8),
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(0.7, 0.9),
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(0.8, 1.0),
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(0.5, 0.95),
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(0.0, 1.0) # Full unwarp
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]
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output_dir = "debug_unwarp_viz"
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if not os.path.exists(output_dir): os.makedirs(output_dir)
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# Try different angles too
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angles = [0, 90, 180, 270]
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for angle in angles:
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M = cv2.getRotationMatrix2D((cx, cy), angle, 1.0)
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rotated = cv2.warpAffine(img, M, (w, h), borderValue=(255, 255, 255))
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# Use a fixed factor of 1.0 for now
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out_w = int(radius * 2 * np.pi)
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out_h = radius
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unwarped = cv2.warpPolar(rotated, (out_w, out_h), (cx, cy), radius, cv2.WARP_POLAR_LINEAR)
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for r_start, r_end in ranges:
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strip = unwarped[int(out_h * r_start):int(out_h * r_end), :]
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if strip.size == 0: continue
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fname = f"a{angle}_r{r_start}-{r_end}.png"
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cv2.imwrite(os.path.join(output_dir, fname), strip)
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# Also try a flipped version
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cv2.imwrite(os.path.join(output_dir, f"a{angle}_r{r_start}-{r_end}_hflip.png"), cv2.flip(strip, 1))
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if __name__ == "__main__":
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debug_unwarp_viz()
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