Cancer is the most important problem for the human life. In addition to the high mortality rate, early detection and diagnosis are become crucial to understand cancer, but depending on the type of cancer, diagnostic procedures can be quite costly. In the first part, a novel system is represented to localize cancerous regions for stomach images which were taken with computed tomography (CT). Moreover, brain tumor, is regarded as the second most important disease after cancer. In many patients, early detection of a brain tumor is vital. Like cancer, early detection and diagnosis are become...