A real-time raycast volume rendering method for 3D seismic volume data
A 3D seismic and volumetric data technology, applied in image data processing, seismic signal processing, 3D image processing, etc., can solve problems such as difficult to meet requirements, poor imaging effect, and inability to draw massive data, and achieve excellent imaging effect, The effect of smooth drawing effect and accurate rendering result
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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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