Real-time ray cast volume rendering method of three-dimensional earthquake volume data
A three-dimensional seismic and volume data technology, applied in image data processing, seismic signal processing, 3D image processing, etc., can solve the problems of poor imaging effect, inability to draw massive data, difficult to meet requirements, etc., and achieve smooth and smooth drawing effect. Accurate rendering results and excellent imaging effects
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[0042] CUDA is NVIDIA's parallel computing architecture, which can greatly improve computing performance by utilizing the processing power of GPU.
[0043] The inventive method such as figure 1 As shown, it mainly includes using CUDA parallel technology to judge whether the volume data block is visible; using CUDA parallel technology to judge whether the current resolution of the volume data block needs to be improved, so as to determine the resolution used by each volume data block in the final rendering, and Generate a list of volume data blocks required for this rendering; determine whether the required volume data blocks are scheduled, use multi-threading technology to perform I / O scheduling for the volume data blocks that need to be scheduled, and perform three-level scheduling of hard disk, memory, video memory, Cache management; at the same time as I / O scheduling, use CUDA parallel technology to perform four steps of ray-casting volume rendering on the scheduled data. ...
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