Abstract
The MRI (Magnetic Resonance Imaging) is diagnosis tool for detection of tumor in brain as it uses magnets to produce magnetic field and radio waves to generate images of brain and also used to analyse it. The abnormal growth of cells or tissues is known as tumor, the presence of tumor can be detected by help MR images. The use of digital image processing is to be done in order to analysis the MR image. The various techniques of image processing such as image acquisition, pre-processing, feature extraction, image classification etc. are utilized for analysis of magnetic images. The segmentation is one of the technique that partition digital image into multiple segments .it is used to locate the lines, curves and objects in the image. The survey of various techniques that are based on segmentation of MR images are to be done in this paper.
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