Title :
Real-time hyperspectral imaging with volume holographic optical elements
Author :
Liu, Wenhai ; Psaltis, Demetri ; Sinha, Arnab ; Barbastathis, George
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We report a novel hyperspectral optical sensor capable of providing image information with four degrees of freedom (4D), ie, volumetric spatial information and spectral information simultaneously, in real time. The imaging principle is based on the diffraction properties of volume holographic optical elements designed as spatial-spectral filters. The 4D imager can be configured to image objects in spatial scales ranging from meters to micrometers. The imager also enables feature matching in all four dimensions, which improves the information-extraction capabilities from the image data. We report experimental results and theoretical estimates on the image quality attainable by the 4D imager
Keywords :
feature extraction; holographic optical elements; image matching; image sensors; light diffraction; spatial filters; spectral analysis; 4D imager; diffraction properties; feature matching; image quality; information extraction; optical sensor; real-time hyperspectral imaging; spatial-spectral filters; spectral information; volume holographic optical elements; volumetric spatial information; Estimation theory; Holographic optical components; Holography; Hyperspectral imaging; Hyperspectral sensors; Optical design; Optical diffraction; Optical filters; Optical imaging; Optical sensors;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958677
