Diffusion coded photography for extended depth of field
Abstract
In recent years, several cameras have been introduced which extend depth of field (DOF) by producing a depth-invariant point spread function (PSF). These cameras extend DOF by deblurring a captured image with a single spatially-invariant PSF. For these cameras, the quality of recovered images depends both on the magnitude of the PSF spectrum (MTF) of the camera, and the similarity between PSFs at different depths. While researchers have compared the MTFs of different extended DOF cameras, relatively little attention has been paid to evaluating their depth invariances. In this paper, we compare the depth invariance of several cameras, and introduce a new camera that improves in this regard over existing designs, while still maintaining a good MTF.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 26, 2010
- Source ID
- 10.1145/1778765.1778768
Entities
People
- Changyin Zhou
- Oliver Cossairt
- Shree Nayar
Organizations
- Columbia University
- Office of Naval Research