GPU-based frequency domain volume rendering

Abstract

Frequency domain volume rendering (FVR) is a volume rendering technique with lower computational complexity as compared to other techniques. In this paper the FVR algorithm is accelerated by factor of 17 by mapping the rendering stage to the GPU. The overall hardware-accelerated pipeline is discussed and the changes according to previous work are pointed out. The three-dimensional transformation into frequency domain is done in a pre-processing step. The rendering step is computed completely on the GPU. First the projection slice is extracted. Four different interpolation schemes are used for resampling the slice from the data represented by a 3D texture. The extracted slice is transformed back into the spatial domain using the inverse Fast Fourier or Fast Hartley Transform. The rendering stage is implemented through shader programs running on programmable graphics hardware achieving highly interactive framerates.

3D Global Simulation of the Interaction of Interplanetary Shocks with the Magnetosphere

“…Fruhauf 针对弯曲数据场提出一种方法 [11] , 该方法将数据场变换到规则场, 同时将直线型的光线变换到规 究人员也提出了很多基于GPU的处理方法 [19][20][21][22] 。 基于GPU的处理之所能够加速，是因为可以将体绘制算法中的很多计算分配给GPU去完成，而不是传 统的由CPU完成。频域体绘制(FVR)技术相对其它体绘制技术来说需要的计算量相对少一些。文献 [23] [24] 、 ABRC (Array Based Ray Casting) [25] 、 EM-Cube [26] 和VIZARD II [27][28] 等等。下面简要介绍VIZARD II这一体系结构。 ,and Ministry of Science and Technology of China " Construction of the network computing application system of astronomy，bioinformatics and computational chemistry " (2005DKA64000-02).…”

High Performance GPU-Based Fourier Volume Rendering

“…This framework abstracts the complex implementation details of the rendering pipeline to allow imaging researchers to develop image enhancement techniques without having prior knowledge of the OpenGL pipeline. Viola et al have implemented a FVR heterogeneous rendering pipeline that uses the GPU to execute the rendering stage relying on fragment shaders [ 23 ]. However, this approach is limited if the current capabilities of unified computing GPU architectures are considered.…”

State‐of‐the‐Art in Compressed GPU‐Based Direct Volume Rendering

“…For frequency domain rendering, the Hartley transform is often used instead of the DFT [Mal93, CYH*97, VKG04], since DFT and DHT basically do the same transform. However, the Hartley transform works with real numbers only, whereas Fourier transform outputs complex values, too.…”

“…Viola et al . [VKG04] proposed the following single‐resolution strategy for a slice‐based rendering: After the compressed data are uploaded to the GPU, the rendering is divided into two stages: (i) slicing in the frequency domain and (ii) the inverse transform. The slicing refers to the re‐sampling of the projection slice from the 3D frequency data.…”