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Impact of undistortion and interpolation on fiber optic tracking

: Winter, C.; Rupp, S.

Sablatnic, R. ; International Association of Science and Technology for Development -IASTED-:
Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications. Proceedings : February 14 - 16, 2007, Innsbruck, Austria
Anaheim: ACTA Press, 2007
ISBN: 978-0-88986-646-1
International Conference on Signal Processing, Pattern Recognition, and Applications <4, 2007, Innsbruck>
Fraunhofer IIS ()

Fiber optics are commonly used for image transmission in image guides of flexible endoscopes which are utilized in various medical and industrial tasks. Many existing algorithms for video coding like motion compensation, Super-Resolution or object tracking could improve the usability and quality of these devices. Since the crucial aspect of these algorithms is detecting and tracking features between successive images the authors set up a framework to automatic parametrize and evaluate motion tracking for various environments and textures. The authors therefore adapted a state of the art tracking approach to suitably work for the field of fiberoptics and can quantitavely confirm the positive effect of interpolation and undistortion of acquired image data. Results for four kinds of image content are grafically given in meaningful plots as well as summarized in a detailed table. The overall result affirms the supposed assumption that tracking on images that are interpolated with the proposed approach is superior with respect to the resulting variance in motion. Especially below the range of a that is suitable for tracking features on non interpolated images Sigma < Sigma(min) the procedure including interpolation works stable and shows quite constant motion distance close to the ground truth data.