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The nondestructive optical coherence tomography measurement can show the shell-nucleus features, quantify the nacre thickness and thus has the potential to identify or grade the pearls [1]. However, the automated thickness measurement of nacreous layer based on OCT has not been reported. In this article, an automated approach is first time proposed to measure the thickness of nacreous layer using...
In this paper, we explored the automatic thickness measurements of pearl from optical coherence tomography (OCT) images. We used a two stage scheme to extract the upper and lower boundaries of nacre respectively, and computed the thickness of nacre based on the extracted upper and lower boundaries. At the first stage, we employed edge detection method to extract the upper boundary. At the following...
The existence of noise and speckle in optical coherence tomography (OCT) images challenges the extraction of layer structures. As an effort to answer the challenges, an improved coherence enhancing diffusion (CED) algorithm for preprocessing OCT images is presented in this paper. The improved algorithm could keep the locality of layer structures in OCT images better, therefore, locality of layer structures...
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