Holographic spectral image discrimination and segmentation
H. John Caulfield, Jian Yu Fu · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2006
Holographic spectroscopy has been a subject of continuing interest for several decades. Recently, the use of optical filters to allow fast discrimination and segmentation of images has been shown to be very powerful. Conventional filters are restricted to being nonnegative, but that restriction does not apply to holographic filters. So more useful filters can be designed and used holographically to produce a pixel-by-pixel spectral image analyzer.