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Vision-based high accuracy work-piece inspection from profiles

Xu Z., Toncich D., Wu H.

Machine Graphics and Vision

2001

Vol. 10, No. 2

155-174

The objective of the research documented herein was to investigate high-accuracy identification and measurement of a work-piece through edge detection, and to derive its three-dimensional properties from a profile of the work-piece image. A number of techniques for providing the transformation of the image are also described. The helix, helicoid and range of geometric entities have been selected to demonstrate the methodology and to highligh various aspect of the proposed techniques.

Adaptive edge-preserving filtering

Xu Z., Toncich D., Stefani S.

Machine Graphics and Vision

1999

Vol. 8, No. 3

353-365

The research, upon which this paper is based, focused upon the accurate acquisition of images that could be used for precision measurement processes. These precision measurements wou;d either be used as a part of an inspection system or as a feedback mechanism to improve process quality. In this paper, a novel adaptive filtering method is proposed for the purpose of reducing noise and removing spurious pixel values on images, acquired within a manufacturing environment without blurring edges or displacing identified boundaries. The paper documents the experimental outcome derived from testing this novel filtering technoque.