Introduction
The brain is made up of a complex network of billions of nerve cells
called neurons, as well as other kinds of cells, all protected by the
bones of the skull. As with all other organs, the tumor is made up of
cells in the brain. Normally, cells grow, grow and aging or die, and new
cells are formed instead of these cells. However, in abnormal cases,
when this formation-destructive activity begins to function differently
than normal, unnecessary cells begin to form, or when the cells formed
are not destroyed in time, the excess cells begin to group so that a
structure called the tumor appears at the organ level. Because not all
tumors can be called cancer, tumors formed in the brain are called brain
tumors. Primary brain tumors may be benign (meningioma, scwanoma,
epidermoid dermoid cysts) or malignant (glial tumors, anaplastic
multiforme and glioblastoma).
Fig1 indicates the magnetic resonance imaging (MRI) of brain. The MRI
gives a perfect visualization of brain anatomic structure like deep
structures, brain tissues by generating the 3D image. But for
segmentation and detection of brain tumor more number of MRI scans are
need to be taken for each patient. Thus to overcome the problem of
manual segmentation the computer based train tumor segmentation and
detection is required.