Table 3. Comparisons of the number of rays from the ground truth and instance segmentation, and the mean heights from the ground truth

Wood species Ground truth Instance segmentation Height of rays (μm)
Abies koreana 382 344 155.5
Abies nephrolepis 320 295 138.9
Cedrus deodara 256 243 207.4
Cryptomeria japonica 500 400 77.3
Ginkgo biloba 447 246 71.4
Larix gmelinii 289 293 158.0
Picea jezoensis 359 396 134.2
Pinus koraiensis 197 85 146.7
Taxus cuspidate 501 384 84.1