And volume rendering of mixed data was processed.

从而对混合数据进行体绘制。

Ray casting is a classic algorithm of Volume Rendering.

光线投射算法是体绘制中的经典方法。

An effective fast volume rendering algorithm is investigated.

研究有效的体绘制加速算法。

After study several volume rendering algorithms and analyze the effect.

对几种体绘制算法进行研究，对其绘制效果进行分析和比较。

Ray casting is a widely recognized method for high quality volume rendering.

光线投射是一种高质量的体绘制方法。

The speed of volume rendering is the bottleneck of interactive visualization.

体数据的绘制速度是交互可视化的瓶颈。

Hardware accelerated volume rendering technique is the key point of this thesis.

基于硬件加速的体绘制技术是本文的研究重点。

Volume rendering of irregular data field is a hot but knotty field in VISC recently.

非规则数据场的体绘制是可视化的一个热点和难点。

Gray scale image interpolation is a preprocessing step for volume rendering in medicine.

灰度图像插值是体绘制的预处理步骤。

Methods in 13 cases, maxillofacial fractures were demonstrated with 3dct volume rendering.

方法对13例颌面复杂骨折患者，进行三维ct体积重建。

Volume rendering (VR) was applied to display and judge the images of the collateral vessels.

应用容积再现(VR)显示和判断病变侧支循环图像。

Results The three volume rendering of CT two - dimensional images of head has been realized.

结果用该方法实现了头部CT二维图像的三维体素成像。

This paper presents a measurement method based on volume rendering that any position can be measured.

对此，提出了一种在体绘制基础上可对任意部位进行测量的方法。

Color composition is an important part in volume rendering, and its computation is very time-consuming.

颜色合成是体绘制的重要组成部分，其中大量重复计算严重影响了绘制的实时性。

It can display the whole characteristics and inner detail information of ICT 3d data by volume rendering.

体绘制技术可以显示工业CT三维数据的整体特征和内部细节信息。

We have shown volume rendering to be superior to SSD in demonstrating surgically created femur fractures .

我们认为在用于外科显示股骨骨折方面，容积再现优于SSD。

An interactive volume rendering algorithm is presented which is based on a novel optical visualization model.

交互式体绘制算法基于一个新的可视化模型。

Volume rendering can be applied in many fields including medical science, meteorology and geological exploration.

体绘制的应用领域十分广泛，涵盖了医学、气象学和地质勘探等领域。

In this paper, three-dimensional seismic data field of direct volume rendering-Ray Casting Algorithm is mainly studied.

本文主要研究三维地震数据场的直接体绘制方法——光线投射算法。

Moreover, in volume rendering the dynamic range of the image is preserved, enabling display of vessels, soft tissue, and viscera.

此外，在容积再现中图像的动态范围被保留，能够显示血管、软组织和内脏。

Reconstruction methods were multiple planar reconstruction(MPR), maximum intensity projection(MIP) and volume rendering technique(VRT).

重建应用多平面重建（MPR），最大密度投影（M IP）及容积显示技术（VRT）。

The flexibility and superior image fidelity of volume rendering make it a very useful technique in an increasing number of applications.

容积再现技术的灵活性和较高的图像精确性使其成为非常有用的技术，应用范围在不断增加。

In this work, we implement the traditional ray-casting-based volume rendering algorithm on the programmable graphics processing unit (GPU).

将传统的光线投射体绘制算法在具有可编程管线的图形处理器（GPU）上重新实现。

Based on the splatting algorithm, an accelerated algorithm is used to pick up the nearest surface volume and realize fast volume rendering.

在抛雪球法的基础上，采用提取最近表面体素的方法实现加速。

From now on, there are mainly two implementations of volume rendering, one is software implementation, the other is hardware implementation.

目前体绘制策略的实现主要有两种：软件实现和硬件实现。

Objective:To study the ways of volume rendering(VR) three-dimensional reconstruction(3D) by spiral CT, and evaluate its clinical applications.

目的：探讨螺旋CT三维容积重建（VR）成像方法，评价其临床运用范围与价值。

In order to display important organs outstandingly, a new approach for fast volume rendering algorithm based on mixed data sets was put forward.

为了突出人体重点器官的显示，提出了一种新颖的基于混合数据场的快速体绘制算法。

Volume rendering is also known as direct volume rendering, for no intermediate geometry primitives are generated during its visualization process.

由于体绘制技术是将三维的离散数据直接转换为二维图像而不必生成中间几何图元，所以又称为直接体绘制。

Then, the paper talked about the volume rendering technology, using GPU on that area, and set out the operation effect of the visualization software.

随后文章介绍了体绘制技术与GPU技术在这方面的应用，并展示了编写的显示端软件的执行效果。

Objective To describe a spatial data structure called sorted volumetric data structure which speeds up the volume rendering and will not affect image quality.

本文提出一种称为有序体数据的空间数据结构，它可以有效地加速体绘制而对图像质量没有影响。