Accession Number : ADA329541

Title :   Optoelectronic Computer Architecture Development for Image Reconstruction

Descriptive Note : Final rept. 1 Apr 95-31 Oct 96

Corporate Author : HUGHES RESEARCH LABS MALIBU CA

Personal Author(s) : Forber, Richard ; Efron, Uzi

PDF Url : ADA329541

Report Date : OCT 1996

Pagination or Media Count : 11

Abstract : Shear layer turbulence near the surface of an aircraft causes degradation to image quality for onboard imaging sensors looking through this layer. Real time correction of these images for immediate use by the operators or onboard electronics is of interest. This effort addressed the development of high speed computational hardware that can perform image reconstruction using turbulence characteristic data. Specifically, we collaborated with UCSD and ERIM on the development of an optically augmented electronic computer for high speed inverse transform calculations to enable real time image reconstruction. The joint effort included FFT algorithm assessment and mapping considerations for optically interconnected and enhanced computer architectures (such as the Hughes 3-D computer and possibly multiple FFT/DSP modules). as well as the development (by UCSD) of optical interconnect hardware, The phase diverse speckle imaging approach developed by the ERIM team was the primary focus of algorithm assessments. Based on projections using next generation DSP and FFT chips, the phase diverse speckle approach was estimated to provide a potential for approximately 30 Hz image reconstruction with 256x256 images.

Descriptors :   *ELECTROOPTICS, *COMPUTER ARCHITECTURE, *IMAGE RESTORATION, ALGORITHMS, REAL TIME, TURBULENCE, PARALLEL PROCESSORS, DATA ACQUISITION, SKIN(STRUCTURAL), SHEAR FLOW, SPECULAR REFLECTION, OPTICAL AUGMENTATION.

Subject Categories : Electrooptical and Optoelectronic Devices
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE