MixKNet: A Modified U-shaped Network with Hybrid Channel Convolution for Medical Image Segmentation

Artificial neural network-based computer image processing technology has rapidly developed in recent years and found widespread applications across multiple fields. In medical image processing, UNet and its variants have shown great success in lesion detection, cell segmentation, and polyp segmentation tasks. This research presents a modified U-shaped network with reduced network parameters achieved by decreasing the network depth and increasing the network channels to enhance the model's learning ability. To counteract the reduction in learning capacity caused by depth compression, a hybrid-channel convolutional module is introduced to replace the original network's convolutional module. The model introduces a channel attention mechanism between the layer and the point convolution layer to improve the practical channel feature extraction ability. The article also concludes that using mixed-depth convolution can effectively solve the size span of the segmentation target, making it difficult for one model to be fit for multiple data sets. The proposed model achieves state-of-the-art results on two popular public datasets, MoNuseg and GlaS, with a mean dice increase of 1.0% and 1.37%, respectively. The total parameters of the modified model are reduced to 1.71M, representing a 38.6x reduction compared to UCtransNet, with 65.6M parameters.