Color image encryption and decryption based on jigsaw transform employed at the input plane of a double random phase encoding system. - Ratheesh Kumar Meleppat; C. L. Linslal; V. P. Mahadevan Pillai; Sudheer Sreedhara Krishna (ICUMT, 2010)

Design and simulation of a optical communication system with dispersion managed RZ pulse. - Ratheesh Kumar Meleppat; V. P. Mahadevan Pillai; K. G. Gopchandran (ICUMT, 2011)

Performance analysis of a dispersion managed soliton transmission system. - Ratheesh Kumar Meleppat; V. P. Mahadevan Pillai; K. G. Gopchandran (ICUMT, 2011)

An efficient retinal blood vessel segmentation in eye fundus images by using optimized top-hat and homomorphic filtering. - Oscar Ramos-Soto; Erick Rodríguez-Esparza; Sandra E. Balderas-Mata; Diego Oliva; Aboul Ella Hassanien; Ratheesh Kumar Meleppat; Robert J. Zawadzki (Comput. Methods Programs Biomed., 2021)