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A novel three-dimension (3-D) augmented reality system using autostereoscopic images was developed for surgical navigation. The 3D images are created by computer reconstruction and the polarized stereo projection system, which provides geometrically accurate 3-D spatial images and reproduces motion parallax with polarized eyeglasses. The spatially projected 3-D images are superimposed onto the surgical...
Reliability is of great importance for power converter systems, such as metro, high-speed train and offshore wind turbine. Bonding wire lift-off is a common failure in IGBT module due to the thermomechanical fatigue under cyclical temperature and power swings. Consequently, this will lead to the chip-loss failure gradually in a high power multi-chip IGBT module during long-term operation. To prevent...
This paper introduces an improved level set algorithm based on Chan-Vese (C-V) models via reaction diffusion for atrial body segmentation. Before atrial body segmentation, a set of methods are used to extract left atrium and left ventricular as a preprocessing work. This set of methods consist of the following steps. First, a bilateral filtering operation is applied to remove random noise caused by...
DNA sequences are formed by nucleotides A;C; G; T. Often, a particular word called motif can occur in many sequences of a group. There has been an algorithm to find both the frequent and the maximal motif in the DNA sequences, but it has some disadvantages. Such as the time and place cost is very high. In the paper, we build a tree based on the motif length to improve it, and implement a small system...
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