Image Edge Enhancement with Two Cascaded Acousto-Optic Cells with Contrapropagating SoundApplied Optics
AbstractBasic real-time programmable image-processing operations are accomplished by use of acousto-optic (AO) cells. Instead of frequency-plane filters, the AO cells are placed directly behind the object. The one-dimensional edge-enhancement results with one AO cell can be improved by use of two AO cells that are placed in tandem with contrapropagating sound. The dominant second-derivative operation obtained from the transfer function of the undiffracted order works like a one-dimensional Laplacian operator that enables improved edge enhancement.
CopyrightCopyright © 1998, Optical Society of America
PublisherOptical Society of America
Citation InformationDongqing Cao, Partha P. Banerjee and Ting-Chung Poon. "Image Edge Enhancement with Two Cascaded Acousto-Optic Cells with Contrapropagating Sound" Applied Optics Vol. 37 Iss. 14 (1998)
Available at: http://works.bepress.com/partha_banerjee/60/