Investigation of Image Formation in Scattering and Other Irregular Media
Abstract
A new theory of image formation through scattering media was developed based on Fourier optics and optical information concepts. This theory predicts the capabilities and limitations of the first-arriving-light method of imaging through highly scattering media in a way that is totally different from conventional transport and diffusion theory. A highly generalized theory of optical sectioning by holographic means was carried out. The method shows the basic similarities between broad-source optical sectioning and broad-spectrum optical sectioning. An especially intriguing observation is that broad-spectrum light gives a broad source effect, thus tying together the basic van Cittert spatial coherence theory and the Wiener-Khinchine temporal coherence theory. The authors developed a method of nonholographic incoherent optical sectioning that is easily implemented, gives good optical sectioning in reflection, and gives second-order sectioning in transmission. They also invented a new type of confocal imaging system, the chirp confocal, that combines technologies from four diverse disciplines: synthetic aperture imaging, chirp pulse compression, holography, and conventional confocal imaging. Extensive experimental work was done to verify the ideas that were developed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 02, 2005
- Accession Number
- ADA430449
Entities
People
- Emmett N. Leith
Organizations
- University of Michigan