The brain tissue extraction in brain magnetic resonance images(MRI) improves the accuracy of the brain region of interest, and the image segmentation of brain tumors can be used for tissue reconstruction, tumor volume calculation, etc. In this paper, we first used the brain extraction tool(BET) method to extract brain structure region, then combined the automatic entropy threshold and morphology to extract. After that , we applied the fuzzy C-means (FCM ) algorithm and median filter to extract the tumor region. Compared with the result of expert sketch, this paper preferable extracts brain tumor region, actualizes the automatic segmentation, and improves the calculating efficiency.
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