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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 2,
  • Issue 9,
  • pp. 528-530
  • (2004)

The method to evaluate the position error in graphic positioning technology

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Abstract

In the measurement of automobile body-in-white, it has been widely studied to position the two-dimensional (2D) visual sensors with high precision. In this paper a graphic positioning method is proposed, a hollow tetrahedron is used for a positioning target to replace all the edges of a standard automobile body. A 2D visual sensor can be positioned through adjusting two triangles to be superposed on a screen of the computer, so it is very important to evaluate the superposition precision of the two triangles. Several methods are discussed and the least square method is adopted at last, it makes the adjustment more easy and intuitive with high precision.

© 2005 Chinese Optics Letters

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