Table 11. Analysis results between original images and grayscale images

Contents Pixel Top1 / Top3 / Top5 (Numbers) Top 1/ Top3 / Top5 Accuracy(%)
VGG-16 224 ✕ 224 31 / 55 / 67 6 / 10 / 12
448 × 448 67 / 123 / 150 12 / 22 / 27
ResNet50 224 × 224 1 / 6 / 8 0.1 / 1 / 1
448 × 448 5 / 11 / 12 0.8 / 2 / 2
a: A total of 556 images are the target of the comparative experiment.