title: Defocus morphing in real aperture images.
abstract: A new concept called defocus morphing in real aperture images is introduced. View morphing is an existing example of shape-preserving image morphing based on the motion cue. It is proved that images can also be morphed based on the depth-related defocus cue. This illustrates that the morphing operation is not necessarily a geometric process alone; one can also perform a photometry-based morphing wherein the shape information is implicitly buried in the image intensity field. A theoretical understanding of the defocus morphing process is presented. It is shown mathematically that, given two observations of a three-dimensional scene for different camera parameter settings, we can obtain a virtual observation for any camera parameter setting through a simple nonlinear combination of these observations.
authors.affiliation: Department of Electrical Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India. sc@ee.iitb.ac.in
authors.forename: Subhasis
authors.initials: S
authors.lastname: Chaudhuri
mesh_terms: D000465:Algorithms; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D010780:Photogrammetry / Q000379:methods*; D010783:Photometry / Q000379:methods*