Image segmentation: A short survey

Images are segmented by marking pixel as object pixels or back-ground pixel this helps us in highlighting the area that is to be used for analysis more clearly .There are various techniques by which this can be achieved for both grayscale images and coloured images. The accuracy and efficiency of the segmentation depends on the precision by which all the variables are incorporated .A lot of research has been done in developing such methods of segmentation or partitioning of images .In present paper a survey of various methods of Image segmentation models has been discussed.