Circumference imaging for optical based identification of cylindrical and conical objects

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Description

Inspection and identification of cylindrical or conical shaped objects presents a unique challenge for a machine vision system. Due to the circular nature of the objects it is difficult to image the whole object using traditional area cameras and image capture methods. This work describes a unique technique to acquire a two dimensional image of the entire surface circumference of a cylindrical/conical shaped object. The specific application of this method is the identification of large caliber (155 mm) ammunition rounds in the field as they are transported between or within vehicles. The proposed method utilizes a line scan camera in ... continued below

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11 p.

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Hunt, M.A.; Sitter, D.N.; Ferrell, R.K. & Breeding, J.E. February 1, 1997.

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Description

Inspection and identification of cylindrical or conical shaped objects presents a unique challenge for a machine vision system. Due to the circular nature of the objects it is difficult to image the whole object using traditional area cameras and image capture methods. This work describes a unique technique to acquire a two dimensional image of the entire surface circumference of a cylindrical/conical shaped object. The specific application of this method is the identification of large caliber (155 mm) ammunition rounds in the field as they are transported between or within vehicles. The proposed method utilizes a line scan camera in combination with high speed image acquisition and processing hardware to acquire images from multiple cameras and generate a single, geometrically accurate, surface image. The primary steps involved are the capture of multiple images as the ammunition moves by on the conveyor followed by warping to correct for the distortion induced by the curved projectile surface. The individual images are then tiled together to form one two-dimensional image of the complete circumference. Once this image has been formed an automatic identification algorithm begins the feature extraction and classification process.

Physical Description

11 p.

Notes

OSTI as DE97002984

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  • EI `97: electronic imaging, San Jose, CA (United States), 9-14 Feb 1997

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  • Other: DE97002984
  • Report No.: CONF-970246--1
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 434427
  • Archival Resource Key: ark:/67531/metadc683886

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • February 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 21, 2016, 10:15 p.m.

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Hunt, M.A.; Sitter, D.N.; Ferrell, R.K. & Breeding, J.E. Circumference imaging for optical based identification of cylindrical and conical objects, article, February 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc683886/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.