Velocity filtering using complementary gratings in photorefractive BSO


Hussain, G. and Eason, R.W. (1991) Velocity filtering using complementary gratings in photorefractive BSO At EQEC '91: 3rd European Quantum Electronics Conference & 10th National Quantum Electronics Conference, United Kingdom. 27 - 30 Aug 1991.

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Description/Abstract

Motion detection, velocity filtering and the detection of change in a given scene are all important aspects for optical processing architectures and systems. So far several different techniques have been reported in the literature that use either all optical, or hybrid (optical plus electronic), schemes to implement novelty filter type operations. For essentially all-optical schemes the intrinsic advantages of parallel image subtraction arc clear. In this paper we report a different scheme for motion detection and velocity filtering which uses two spatially multiplexed gratings with a relative phase shift 130 degrees, (known as complementary gratings) in photorefractive BSO.

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: EQEC '91: 3rd European Quantum Electronics Conference & 10th National Quantum Electronics Conference, United Kingdom, 1991-08-27 - 1991-08-30
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ePrint ID: 77438
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Date Event
1991Published
Date Deposited: 11 Mar 2010
Last Modified: 18 Apr 2017 20:30
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/77438

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