Parallelized ray casting method, system and apparatus

A light and ray technology, applied in the field of scientific computing visualization, can solve problems such as large amount of calculation, poor real-time performance, and limitation of visual imaging speed, and achieve the effect of increasing the speed

Inactive Publication Date: 2018-10-19
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0003] However, the traditional ray casting algorithm involves a large number of ray sampling operations and data fusion operations, which has a large amount of computation, limited visualization imaging speed, and poor real-time performance.

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  • Parallelized ray casting method, system and apparatus
  • Parallelized ray casting method, system and apparatus

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Embodiment Construction

[0045] In recent years, scientific computing visualization imaging technology has developed rapidly, including computed tomography (CT), magnetic resonance imaging (MRI) and other imaging fields. Among many visualization imaging techniques, ray casting is a commonly used algorithm. The 3D visualized image reconstructed by the ray projection method can obtain a large amount of diagnostic information due to the realistic visual effect, which is of high value in clinical research and treatment. However, the ray-casting method may generate gigabytes or even gigabytes of data during the reconstruction process. If the data volume is too large, it will affect the real-time display of the 3D image. Therefore, it is necessary to improve the ray-casting method to increase the reconstruction speed.

[0046] In the face of gigabytes or even terabytes of data, the parallel computing of GPU (Graphics Processing Unit, graphics processor) has obvious advantages compared with CPU in terms of p...

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Abstract

The invention relates to a parallelization ray casting method, system and apparatus. The method includes the following steps that: volume data are acquired, and data classification is performed on the volume data, so that classification results can be obtained; resampling is performed on the classification results in a parallel manner, so that a resampling result can be obtained; block processing is performed on the resampling result, so that a plurality of sub data blocks can be obtained; image fusion is performed on the sub data blocks in a parallel manner, so that a plurality of sub image data corresponding to the sub data blocks can be obtained; and image fusion calculation is performed on the sub image data, so that a visual image of the volume data can be obtained. According to the parallelization ray casting method, system and apparatus provided by the above embodiments of the invention, parallel processing of the volume data is realized, so that the speed of visual imaging can be greatly improved.

Description

technical field [0001] The present invention relates to the technical field of scientific computing visualization, in particular to a parallelized light projection method, system and device. Background technique [0002] In the process of scientific computing visualization research, the ray casting method is usually used. The visual effect of the ray projection method is real, and a large amount of effective image information can be obtained. It not only has high application value in the field of medical imaging, but also has certain applications in the fields of geological exploration, meteorology, molecular model construction, space detection and animation design. reference value. [0003] However, the traditional ray casting algorithm involves a large number of ray sampling operations and data fusion operations, which has a large amount of computation, limited visualization imaging speed, and poor real-time performance. Contents of the invention [0004] In view of th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/06G06T15/08
CPCG06T15/06G06T15/08
Inventor 张岩李晓清高鹏徐基鑫
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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