Investigation of Colon Using Speckle and Cascaded Interferometric Techniques

Abstract

In this paper, two different techniques are used in the investigation of colon cancer images. The 1st technique is based on modulated speckle photography computed from the Fourier diffraction of the colon image combined with the diffuser, while the 2nd technique is based on cascaded multiple beam interference. Discrimination between colon cancer and colon polyp is obtained from the speckle images. In addition, discrimination between benign, and malignant colon cells is attained by comparing the corresponding modulated speckle profiles. The surface topography of colon cancer can be obtained from either the fringe shift corresponding to the interference pattern or the profile shape plotted from the source input image. Finally, the refractive index corresponding to the colon's malignant and benign cells is computed from the surface height variation as outlined in the analysis. All images and results are obtained by making use of Mat-Lab code.