@book{30348,
	author = {Svetkoff, Donald, ed.},
	title = {Optics, Illumination, and Image Sensing for Machine Vision IV},
	publisher = {SPIE},
	year = {1990 },
	series = {Proceedings of SPIE; V. 1194},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1194}
}