Accession Number : ADD014068

Title :   Window Generator.

Descriptive Note : Patent, Filed 21 Oct 87, patented 21 Mar 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Johnson, William K ; May, Roger A

Report Date : 21 Mar 1989

Pagination or Media Count : 10

Abstract : The present invention relates generally to video target recognition systems and more specifically to a window generator which receives a field of video data and applies an identification code to rectangular subregions to identify distinct target areas within a given background area. The present invention comprises a window generator which provides a unique 6 bit target identification number for up to 63 target areas and one background area in a frame of serially scanned data. The window generator receives a field of video data from an image data source. This video data consists of digitized frames of serially scanned data similar to a conventional television screen image, which is divided horizontally in pixels, and vertically in lines. The window generator permits any given frame to be subdivided into specific rectangular subregions, which may be located anywhere on the video picture. by allowing statistics to be collected on the individual subregions (or target areas ) the window generator permits local processing of video data within the specified target areas as opposed to processing of video data over the entire video field. One embodiment of the window generator is composed of: a microprocessor, a random access memory (RAM), a comparator, a line memory, two counters, an OR gate, a frame initialization circuit, and a buffer. These elements function as described below. Keywords: Patents. (aw)

Descriptors :   *PATENTS, *TARGET RECOGNITION, *TARGET DETECTION, *IDENTIFICATION SYSTEMS, *COMPUTERS, *IMAGE PROCESSING, BACKGROUND, CODING, COUNTERS, DATA PROCESSING, GENERATORS, IDENTIFICATION, IMAGES, MEMORY DEVICES, MICROPROCESSORS, PICTURES, PROCESSING, RANDOM ACCESS COMPUTER STORAGE, SCANNING, SCREENS(DISPLAYS), SEQUENCES, SOURCES, TARGETS, TELEVISION DISPLAY SYSTEMS, VIDEO SIGNALS, WINDOWS, TELEVISION RECEIVERS, VIDEO FRAMES, DIGITAL SYSTEMS

Subject Categories : Target Direction, Range and Position Finding
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE