Accession Number : ADA301664

Title :   Hardware Implementation of a Desktop Supercomputer for High Performance Image Processing. Time Multiplexed Color Image Processing Based on a VLSI Cellular Neural Network with Cell-State Outputs.

Descriptive Note : Technical rept. 1 Aug-1 Nov 95,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : DE Gyvez, Jose P.

PDF Url : ADA301664

Report Date : 15 NOV 1995

Pagination or Media Count : 46

Abstract : This report presents a Cellular Neural Network (CNN) VLSI implementation to be used in a time-multiplexing scheme for processing large and complex images. While efficient VLSI implementations have been reported, no research work has addressed the use of small CNN arrays for processing large complex images. Hence, the work hereby presented introduces a strategy to process large images using small CNN arrays. For practical size applications, due to hardware limitations, it is impossible to have a one-on-one mapping between the CNN hardware cells and all the pixels in the image involved. This report presents a practical solution by processing the input image block by block, with the number of pixels in a block being the same as the number of CNN cells in the array. Furthermore, unlike other implementations in which the output is taken from the feedback path of each cell, the VLSI architecture hereby described takes the outputs from the state node. While previous implementations are mostly suitable for black and white applications because of the thresholded outputs, our approach is especially suitable for applications in color (gray) image processing due to the analog nature of the state node.

Descriptors :   *IMAGE PROCESSING, *SUPERCOMPUTERS, INPUT, OUTPUT, NEURAL NETS, CELLS, PATHS, VERY LARGE SCALE INTEGRATION, NODES, SOLUTIONS(GENERAL), LIMITATIONS, FEEDBACK, INSTALLATION, COLORS, IMAGES.

Subject Categories : Computer Hardware
      Cybernetics
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE