title: Spectral multiplexing method for digital snapshot spectral imaging.
abstract: We propose a spectral imaging method for piecewise "macropixel" objects, which allows a regular digital camera to be converted into a digital snapshot spectral imager by equipping the camera with only a disperser and a demultiplexing algorithm. The method exploits a "multiplexed spectrum" intensity pattern, i.e., the superposition of spectra from adjacent different image points, formed on the image sensor of the digital camera. The spatial image resolution is restricted to a macropixel level in order to acquire both spectral and spatial data (i.e., an entire spectral cube) in a single snapshot. Results of laboratory experiments with a special macropixel object image, composed of small, spatially uniform squares, provide to our knowledge a first verification of the proposed spectral imaging method.
authors.affiliation: Department of Physical Electronics, Faculty of Engineering, Tel Aviv University, Ramat Aviv 69978, Israel. mgolub@eng.tau.ac.il
authors.forename: Michael A
authors.initials: MA
authors.lastname: Golub
authors.forename: Menachem
authors.initials: M
authors.lastname: Nathan
authors.forename: Amir
authors.initials: A
authors.lastname: Averbuch
authors.forename: Eitan
authors.initials: E
authors.lastname: Lavi
authors.forename: Valery A
authors.initials: VA
authors.lastname: Zheludev
authors.forename: Alon
authors.initials: A
authors.lastname: Schclar