Nowadays, Micro calcification in digital mammogram is an important early sign of breast cancer and their early detection is very important to improve its diagnosis. Early detection of cancer is the best method to increase the chances of survival. In early stage, cancer can be detected using mammography, fine needle aspirate, and surgical biopsy. Computer- based detection system can assist the radiologist to improve the diagnostic accuracy. Digital Mammogram is the low cost and effective for early detection of masses or abnormalities which related to the high risk factor of breast cancer. In this paper, various techniques for detection of micro calcification have been studied. Further, brief discussion has been done on breast cancer detection which is included with feature extraction methods based on texture. At the end of this paper, comparative study between various morphological operations for detecting micro calcification has been done.
