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.
© 2009 Optical Society of America
Original Manuscript: October 27, 2008
Revised Manuscript: February 5, 2009
Manuscript Accepted: February 6, 2009
Published: March 4, 2009
Michael A. Golub, Menachem Nathan, Amir Averbuch, Eitan Lavi, Valery A. Zheludev, and Alon Schclar, "Spectral multiplexing method for digital snapshot spectral imaging," Appl. Opt. 48, 1520-1526 (2009)