From: SHERPA: an image segmentation and outline feature extraction tool for diatoms and other objects
Otsu’s thresholding | Histogram equalization | RATS (σ = 3) | RATS (σ = 1-11) | Adaptive thresholding | Canny edge detector | Contour optimization | Ranking 0 total | Ranking 1 total | Ranking 2 total2) | Total ranking 0 to 2 |
---|---|---|---|---|---|---|---|---|---|---|
✓ | 248 | 168 | 28 | 444 | ||||||
✓ | ✓ | 248 | 223 | 99 | 570 | |||||
✓ | 224 | 161 | 23 | 408 | ||||||
✓ | ✓ | 224 | 230 | 73 | 527 | |||||
✓ | 258 | 193 | 31 | 482 | ||||||
✓ | ✓ | 258 | 287 | 97 | 642 | |||||
✓ | 340 | 167 | 37 | 544 | ||||||
✓ | ✓ | 340 | 271 | 97 | 708 | |||||
✓ | 217 | 169 | 43 | 429 | ||||||
✓ | ✓ | 217 | 264 | 126 | 607 | |||||
✓ | 217 | 122 | 11 | 350 | ||||||
✓ | ✓ | 217 | 141 | 19 | 377 | |||||
✓ | ✓ | ✓ | ✓ | 385 | 170 | 38 | 593 | |||
✓ | ✓ | ✓ | ✓ | ✓ | 385 | 249 | 91 | 725 | ||
✓ | ✓ | ✓ | ✓ | ✓ | 403 | 164 | 44 | 611 | ||
✓ | ✓ | ✓ | ✓ | ✓ | ✓ | 403 | 248 | 95 | 746 | |
✓ | ✓ | ✓ | ✓ | ✓ | 421 | 155 | 52 | 628 | ||
✓ | ✓ | ✓ | ✓ | ✓ | ✓ | 421 | 243 | 97 | 761 |