3197
Total Images
2572.4
Total Size (MB)
≤ 5
Duplicate Threshold
dHash
Detection Method
How it works:
- dHash Algorithm: Images are resized to 9×8 pixels and converted to grayscale
- Perceptual Comparison: Adjacent pixels are compared to create a 64-bit hash
- Duplicate Detection: Hamming distance ≤ 5 between hashes indicates likely duplicates
- File Hash Check: SHA-256 hashes detect exact file duplicates
- Robustness: Handles JPEG compression, minor cropping, and brightness changes