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Efficiently obtaining a reliable coronary artery centerline from computed tomography coronary angiography (CTCA) data is relevant in clinical practice. In this paper, open-snake is presented to extract the vessel centerline, which is drove by two external forces, one is Gradient Vector Flow (GVF), and the other one is an adaptive stretching force acted on the two ends of open-snake. To make the open-snake...
At present there are many methods that could deal well with frontal view face recognition when there is sufficient number of representative training samples per person. However, few of them can work well when only single training sample per person is available. In this paper, we present a training sample enhancement method based on Wavelet Transform (WT) low-frequency band to improve the performance...
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