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Selectable Image Stabilization for Improved Performance

IP.com Disclosure Number: IPCOM000113678D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Kishi, GT: AUTHOR

Abstract

Settling and image stabilization are required on the 3495 but cause unneccesary delays during certain operations. A method was developed to eliminate this wait on specific operations.

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This is the abbreviated version, containing approximately 52% of the total text.

Selectable Image Stabilization for Improved Performance

      Settling and image stabilization are required on the 3495 but
cause unneccesary delays during certain operations.  A method was
developed to eliminate this wait on specific operations.

      The 3495 automated tape library consists of a robot mounted on
a vehicle (called the accessor), and a vision system.  During
cartridge picking and cartridge inventory, the robot moves a camera
in front of the cartridge and the vision system is commanded to read
the label.

      Typically when a cartridge is to be read, a large accessor
motion is performed.  At the end of this motion, the arm must be
allowed to settle, and the image must be stabilized prior to
"snapping" a picture of the label with the vision system.

      On a large accessor motion, the accessor decelerates rapidly to
a stop and indicates it has finished moving when it reaches a
predetermined distance from its goal position.  The camera, located
at the end of the robot arm, is still oscillating slightly.  The
vision system is given control at this time.

      The vision system waits a predetermined settling time to allow
the camera oscillations to dampen.  It then checks for image
stabilization by comparing a specified window in successively snapped
frames.  When the images in this window of two successive frames
appear nearly the same, the last image snapped is kept and the label
read operation begins.

      In certain special cases, a...