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Updated: Jun 20, 2026

Sample Drift Correction Following 4D Confocal Time-lapse Imaging
Published on: April 12, 2014
Real-time joint transform correlator with phase conjugation for distortion correction
1Missiles and Electronics Group, LTV Aerospace and Defense Company, Dallas, Texas 75265, USA.
Abstract:
A joint transform correlator has been demonstrated that incorporates phase conjugation in a BaTiO3 crystal to correct for distortions in a liquid-crystal television (LCTV) spatial light modulator. The optical arrangement permits real-time operation in spite of the relative slowness of the photorefractive effect. Correlation outputs displayed on a video monitor are illustrated for inputs to the LCTV from a video camera viewing a stationary scene. The sensitivity of the correlator to target rotation is also presented.
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