Fourier Optics and Computational Imaging

Prof. Kedar Khare is an Institute Chair Associate Professor at Optics and Photonics Centre and Department of Physics, Indian Institute of Technology Delhi. He additionally serves as an Associate Editor for the Journal of Modern Optics. Before joining IIT Delhi as a faculty member, he worked as a Lead Scientist for over five years at General Electric Global Research in Niskayuna, NY. Professor Khare’s research interests span wide-ranging problems in computational imaging. In recent years he has been actively engaged in research on quantitative phase imaging, Fourier phase retrieval, computational microscopy, diagnostic MRI imaging, cryo-electron microscopy, and structured light propagation in turbulence. Prof. Khare received his MSc in Physics from the Indian Institute of Technology Kharagpur with the highest honors and his Ph.D. in Optics from The Institute of Optics, University of Rochester. Prof. Khare is a Senior Member of Optica.Mansi Butola is currently a Ph.D. studentat the Department of Physics, Indian Institute of Technology Delhi. Her research interests include computational imaging systems in general and her thesis work has focused on iterative phase retrieval algorithms for coherent diffraction imaging. She completed her B. Sc. (Honours) in Physics from Delhi University in 2014. After that in 2016, she received her M. Sc. in Physics from Garhwal University. She is a member of the Optica Student Chapter at IIT Delhi and has actively participated in organizing multiple seminars/workshops and outreach activities.Sunaina Rajora is currently a Ph.D. student in the Department of Physics at the Indian Institute of Technology, Delhi. Her research interests include inverse problems in imaging, optimization algorithms, quantitative phase imaging, digital holography, and tomographic reconstruction. She received her B.Sc. and M.Sc. degrees in Physics from Aligarh Muslim University, India in 2013 and 2015, respectively. She is a member of the Optica Student Chapter at IIT Delhi and has actively participated in organizing seminars/workshops and outreach activities.

“This book is addressed mainly to undergraduate and Ph.D. students interested in the topics of Fourier optics and imaging, which are of paramount importance in optics.” (Daniela Dragoman, optica-opn.org, August 10, 2023)

• Introduction.- Fourier series and transform.- Sampling Theorem.- Operational introduction to Fast Fourier Transform.- Linear systems formalism and introduction to inverse problems in imaging.- Constrained optimization methods for image recovery.- Random processes.- Geometrical Optics Essentials .- Wave equation and introduction to diffraction of light.- The angular spectrum method.