Kurt D. Mills
University of Michigan
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Publication
Featured researches published by Kurt D. Mills.
Journal of The Optical Society of America A-optics Image Science and Vision | 2003
Emmett N. Leith; Wei Chen Chien; Kurt D. Mills; Brian D. Athey; David S. Dilworth
A theory of optical sectioning by image plane holography is developed, emphasizing the use of broad-spectrum holographic methods to enhance the process. It is shown that a broad-spectrum source in a grating interferometer imitates the behavior of a monochromatic broad source.
Applied Optics | 1999
Emmett N. Leith; Brian G. Hoover; Shawn M. Grannell; Kurt D. Mills; H. Chen; David S. Dilworth
A method for simulating conventional time gating in low-coherence optical imaging processes in highly scattering media is given. The method uses monochromatic instead of broadband light, and spatial filtering is substituted for time gating. The process enables the study of imaging techniques in scattering media to be carried out in an easy and highly controllable way. Experimental results are given.
Optics Communications | 2001
Zeev Zalevsky; Emmett N. Leith; Kurt D. Mills
This paper presents a technique to expand the resolving ability of an imaging system. Orthonormal coding of the input information does the expanding. The paper discusses the spectral coding approach that is applied to each one of the pixels in the input pattern. The paper presents computer simulations as well as experimental results that validate the theory.
Applied Optics | 2001
Kurt D. Mills; Louis Deslaurier; David S. Dilworth; Shawn M. Grannell; Brian G. Hoover; Brian D. Athey; Emmett N. Leith
With a spatial-filtering method of gating, we explore image formation through scattering media using first-arriving light. Gating times of a few femtoseconds and less are produced, and the resolution at these extremely short gating times is investigated.
Applied Optics | 2002
Kurt D. Mills; Zeev Zalevsky; Emmett N. Leith
We present a generalized holography-based approach with improved spatial resolution for extracting images, viewed through a scattering medium. The various angular directions are encoded either with different wavelengths or by capturing their corresponding images in different time slots. The various encoded images are recorded on a digital hologram with a computer. A digital reconstruction, which includes demodulation of the carrier beam and then a proper decoding algorithm, yields resolved images. The principle is demonstrated by recording image-plane digital holograms. Combining the suggested approach with the first-arriving light technique may further improve the results.
Optics Communications | 2001
Zeev Zalevsky; Emmett N. Leith; Kurt D. Mills
In this paper the resolving ability of an imaging system is improved by using temporal orthonormal coding of information. In this technique each one of the spectral-spatial bands of the input is coded with orthonormal temporal codes. The paper presents computer simulations that validate the theory.
Proceedings of SPIE | 2001
Emmett N. Leith; Kurt D. Mills; Louis Deslaurier; Shawn M. Grannell; Brian G. Hoover; David S. Dilworth; H. Chen; Marian P. Shih; J. Lopez; Brian D. Athey
We describe a number of methods for imaging into and through highly scattering media, all based in optical imaging processing methods. We describe methods that describe image formation in scattering media in new ways that complement transport theory and other traditional ways.
Applied Optics | 1999
Ignacio Iglesias; H. Chen; Kurt D. Mills; David S. Dilworth; Emmett N. Leith
Electronic spectral holography in the form developed by Shih [Ph.D. dissertation, University Microfilms, Ann Arbor, Mich. (1995)] is adapted to various applications, including optical coherence tomography in scattering media, contouring of surfaces, and optical fiber mode examination.
Holography: A Tribute to Yuri Denisyuk and Emmett Leith | 2002
Emmett N. Leith; Kurt D. Mills; Wei Chen Chien; Brian D. Athey; David S. Dilworth
The theory of optical sectioning of holographic image plane coherence methods is developed, with emphasis on the use of broad spectrum holographic methods to enhance the process.
Applied Optics | 2002
Zeev Zalevsky; Kurt D. Mills; Emmett N. Leith
Reconstructing a hologram with spatially incoherent illumination smears the obtained image. We propose a wavelet based holographic recording process which uses the smearing to obtain a reconstruction with improved spatial resolution when incoherent illumination is applied.