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In this paper, the GVF snake model with the initial contour obtained by interactive method based on the adaptive threshold segmentation is proposed for the medical image segmentation. Firstly, input a line segment intersecting the desired object edge by user interaction. Find the max gradient magnitude where the cross-point is along the line segment. Then calculate the adaptive gray threshold and...
The traditional shear-warp rendering algorithm is based on isotropic volume data, which is often generated from anisotropic data by inter-slice interpolation. This paper presents a new method that renders the anisotropic volume data directly based on the shear-warp algorithm, in the condition of that there is no big difference between the slice spacing and the pixel spacing within the slice. In this...
We design and implement a cross-platform extendable Virtual Reality system with the MVC design pattern. It aims on cross-platform usage and extendibility which makes users to write VR applications much more easily. And the system can run on multiple platforms like Linux and Windows. To achieve extendibility, we embed the system with the Python script module which makes the system easy to be extended...
The edge detection plays a critical role in medical application, edges characterize boundaries are fundamental problem in image processing. The paper illustrates the way by canny algorithm detecting the weak edge of brain, then labeling all the 8-connected edge with a different number and classifying with the that edge, for the size of all the 8-connected edge circumference being different. So, we...
In this paper, an algorithm based on the combination of the Canny operator and the morphology method is proposed for the semiautomatic segmentation of medical image series. Firstly, Canny operator is used to extract the whole accurate edges in the medical image series. Then find some object edge with the user interaction. And obtain the closed object edge by using the morphology methods of end point...
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