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Resolution Enhancement in Opticl Coherence Tomography

R.V.V.L. Langoju, T. Blu, M. Unser

Proceedings of the 2004 Annual Meeting of the Swiss Society of Biomedical Engineering (SSBE'04), Zürich ZH, Swiss Confederation, September 2-3, 2004, poster 15.



OCT performs high-resolution, cross-sectional tomographic imaging of the internal structure in materials and biological systems by measuring the coherent part of the reflected light. The physical depth resolution in OCT depends on the coherence length of the light source and lies around 10-15μm. The new parametric super-resolution method described in this paper does not depend on the coherence length of the light source, but rather on the noise level of the measurement.

The key idea is to describe the OCT measure of a multi layer sample by a parametric model containing the location of the layer and its amplitude. We then find these parameters by minimizing the distance between the model and measure.


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