Browse Prior Art Database

Image Processing System Having Extended Area of Interest Circuitry

IP.com Disclosure Number: IPCOM000104200D
Original Publication Date: 1993-Mar-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 4 page(s) / 73K

Publishing Venue

IBM

Related People

Miyazaki, Y: AUTHOR [+2]

Abstract

Disclosed is an image processing system having an extended area of interest (XAOI) circuitry (see Fig. 1). The XAOI is a circuit to simplify CPU commands of the image processing and to execute the processing on real video timing.

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Image Processing System Having Extended Area of Interest Circuitry

      Disclosed is an image processing system having an extended area
of interest (XAOI) circuitry (see Fig. 1).  The XAOI is a circuit to
simplify CPU commands of the image processing and to execute the
processing on real video timing.

      The XAOI 1) converts the camera/frame frequency, 2) combines a
multipy-accumulators (MAC) array and a look-up table for inserting
appropriate delays, and 3) transmits image data between a main RAM
and a frame RAM.

      The MAC array is used for two-dimensional filtering such as
smoothing and edge detection.  The look-up table is used for
digitization, inversion, normalization, etc.  The XAOI executes these
operations and synchronizes video data timing .

                  --------------     --------------
                  |    CPU     |=====|  MAIN RAM  |
                  --------------     --------------
                             \         /
                              \       /
           ----------      ------------       -----------
           | CAMERA |------|          |-------| MONITOR |
           ----------      |   XAOI   |       -----------
                        /--|          |----\
                      /    ------------      \
                    /            |             \
          -------------   -----------------   -------------
          | MAC ARRAY |   | LOOK UP TABLE |   | FRAME RAM |
          -------------   -----------------   -------------

                Fig. 1 - XAOI Image Processing System

             CAMERA IMAGE                     FRAME RAM
        --------------------            ---------___---------
        |       ****       |            |      / ___ \      |
        |     ***  ***     |            |     / /   \ \     |
        |    ***    ***    | Laplacian  |    / /     \ \    |
        |   ***      ***   | ---------> |   / /       \ \   |
        |  **************  |            |  | |---------| |  |
        |  **************  |            |  | |---------| |  |
        |  ***        ***  |            |  | |         | |  |
        |  ***        ***  |            |  | |         | |  |
        --------------------            ---------------------

                Fig. 2 - Example of Image Processing

 ...