Visualization of Noisy and Biased Volume Data Using First and Second Order Derivative Techniques

Authors:
M. P. Persoon;I. W. O. Serlie;F. H. Post;R. Truyen;F. M. Vos
Affiliations:
Delft University of Technology/ Philips Medical Systems B.V.;Delft University of Technology;Delft University of Technology;Philips Medical Systems B.V.;Delft University of Technology/ Academic Medical Center Amsterdam
Venue:
Proceedings of the 14th IEEE Visualization 2003 (VIS'03)
Year:
2003

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Abstract

The quality of volume visualization depends strongly on the quality of the underlying data. In virtual colonoscopy, CT data should be acquired at a low radiation dose that results in a low signal-to-noise ratio. Alternatively, MRI data is acquired without ionizing radiation, but suffers from noise and bias (global signal fluctuations). Current volume visualization techniques often do not produce good results with noisy or biased data. This paper describes methods for volume visualization that deal with these imperfections. The techniques are based on specially adapted edge detectors using first and second order derivative filters. The filtering is integrated into the the visualization process. The first order derivative method results in good quality images but suffers from localization bias. The second order method has better surface localization, especially in highly curved areas. It guarantees minimal detail smoothing resulting in a better visualization of polyps.