21 October 2004 Imager to spectrometer: extracting spectral data from the two-dimensional array
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Abstract
A common technique in the design of a spectral imaging system is the use of a prism as the dispersive element to disperse the colors onto the focal plane. The imaging system can serve as a spectrometer for point events with minimal computational load because the spectral data from a point event is spread directly on the FPA. The fidelity of the spectrum depends in this case on several factors, including the relative orientation between prism and FPA; the relative sizes of pixel pitch and sensor point spread function; and algorithms to determine spectral calibration and content. In this paper, we elucidate some methods for extracting the spectral data from the two-dimensional array of measurements, including the use of radial basis functions, and demonstrate the procedure with data from a spectral imager.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard J. Nelson, Richard J. Nelson, } "Imager to spectrometer: extracting spectral data from the two-dimensional array", Proc. SPIE 5563, Infrared Systems and Photoelectronic Technology, (21 October 2004); doi: 10.1117/12.560712; https://doi.org/10.1117/12.560712
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