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According to the characteristic that the medical CT image data are area samplings, a new preprocessing approach for CT image is presented in this paper. It firstly constructs mapping relationship between area sampling and point sampling, then detect the image edge with Sobel operator, and divide the CT image into different regions based on human tissue feature, and finally, in each divided region,...
A new method for volume visualization of CT images is presented. The new method uses the information that the given set of CT images is taken from an original volumetric function. The new method first computes the fitting points of the original function with data mining technique, then the fitting points are used to construct 3D model by MC algorithm. The constructed 3D model by the new method has...
A new method for image processing, especially for image resizing, is presented. The new method produces pictures with higher precision, which is useful in 2D CT image resizing. Suppose that the given data points of an image are sampled from an original surface. The method first computes the fitting points of the original surface, then the fitting points are used to construct the interpolation surface...
A new method for removing the staircasing phenomenon in shear-warp algorithm is presented in this paper. During the shear-warp resampling process, bi-linear interpolation only occurs within each slice and the depth information between the slices is neglected. So staircasing phenomenon will occur in the result image at some viewing angles and affect the rendering quality of image. Based on the theory...
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