Full-automatic device and method for extracting region of interest of kidney

The invention provides a full-automatic device and method for extracting a region of interest of the kidney, and relates to the field of medical instruments. According to the full-automatic device and method for extracting the region of interest of the kidney, preliminary segmentation is conducted on a preliminary region of interest according to a level set C-V model algorithm, and a suspected region of interest is obtained; kidney and body ratio parameters are calculated according to the suspected region of interest; the suspected region of interest is segmented again according to the preset prior template constrained level set C-V model algorithm and the kidney and body ratio parameters, and therefore the first region of interest of the kidney is obtained. According to the full-automatic device and method for extracting the region of interest of the kidney, the region of interest of the kidney, namely, the first region of interest of the kidney is automatically obtained finally, a doctor does not need to manually sketch or remodify the region of interest of the kidney according to the detected preliminary region of interest, the obtained image of the region of interest of the kidney is free of subjective difference, and the accuracy and efficiency are high.