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Description: 目的 利用 CT、 MR等获得的图像 ,重构出器官、 骨骼或组织的三维形体 ,帮助医生诊断、 治疗或制订手术方案。方法hear2Warp 算法通过将三维数据场的投影分解为错切变换( shear ) 和变形变换(warp)两步来实现三维重建 ,显著减少了计算量。先对体数据进行错切变换 ,然后在错切空间根据阈值法获取三维表面 ,根据光照模型得到三维表面的亮度 ,最后通过变形变换得到最终的结果图像。-The purpose of the use of CT, MR and other available images, reconstruct organs, bone or tissue of the three-dimensional shape, helping physicians diagnose, treat, or development of surgery. Methods hear2Warp algorithm the projection of three-dimensional data field is decomposed into shear transformation (shear) and deformation of transformation (warp) two-step to achieve the three-dimensional reconstruction, significantly reducing the computational complexity. The first body of data on the shear transformation, and then in the wrong tangent space under the threshold value method to obtain three-dimensional surface, obtained under the illumination model three-dimensional surface brightness, the final adoption of a final result of deformation of the image transformation.
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Size: 301056 |
Author: liaozw |
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Description: 数字影像重建在基于灰度的2D／3D医学图像配准技术中具有重要作用。它是利用基于射线追踪算法从三维数据如CT中获得二维虚拟x线图像。影像重建结果的质量直接影响到配准结果的精度。本文对数字影像重建技术作了一定的探讨，实现了对cT体数据的数字影像重建，并通过增强技术获得了突出骨组织的图像，为后续的配准研究做了很好的准备工作。-Digital image reconstruction in intensity based 2D/3D medical image registration techniques have an important role. It is the use of ray-tracing algorithm based on the data from the three-dimensional CT obtained as two-dimensional virtual x-ray images. Image reconstruction quality of the results directly affect the accuracy of registration results. In this paper, digital image reconstruction techniques were explored certain to achieve volume data on the number of cT image reconstruction, and by enhancing technology to obtain a prominent image of bone tissue, for follow-up studies with prospective done a very good preparations.
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Size: 106496 |
Author: liaozw |
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Description: this pdf is a paper in subject bone age detection
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Size: 328704 |
Author: ali |
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