RGA-Unet: An improved U-net segmentation model based on residual grouped convolution and convolutional block attention module for brain tumor MRI image segmentation

Huachao Chen School of Faculty of Applied Sciences, Macao Polytechnic University p2213945@mpu.edu.mo Mingwei Wang Department of Dardiovascular Medicine, Affiliated Hospital of Hangzhou Normal University, Clinical School of Medicine, Hangzhou Normal University, Hangzhou Institute of Cardiovascular Diseases, wmw990556@hznu.edu.cn Jiangang Chen Shanghai Key Laboratory of Multidimensional Information Processing, School of Communication & Electronic Engineering, East China Normal University, Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation, Ministry of Education jgchen@cee.ecnu.edu.cn