Deep Convolutional Neural Network for Ulcer Recognition in Wireless Capsule Endoscopy: Experimental Feasibility and Optimization

Table 2

Illustration of different architectures and configurations.

Model	Features			Network initialization weights	Training
	Layer 2	Layer 3	Layer 4
ResNet(480)			✓	ImageNet	Train on WCE dataset
hyper(l2) FC-only	✓		✓	ResNet(480)	Update FC-layer only
hyper(l3) FC-only		✓	✓
hyper(l23) FC-only	✓	✓	✓
hyper(l2) all-update	✓		✓	ResNet(480)	Update all layers
hyper(l3) all-update		✓	✓
hyper(l23) all-update	✓	✓	✓
hyper(l2) ImageNet	✓		✓	ImageNet	Update all layers
hyper(l3) ImageNet		✓	✓
hyper(l23) ImageNet	✓	✓	✓