PROGRESS: Completed Project	PROJECT REF: CUHK/03/ENG/160
PROJECT TITLE: Block-based Fragment Filtration with feasible Multi-GPU acceleration for Real-time Volume Rendering on Standard PC
PROJECT DESCRIPTION: A computer-based method and system for interactive volume rendering of large volume dataset on standard PC using hardware-accelerated block filtration, which aims at optimizing the usage of graphics resource. The method is based on 3D-textured axis-aligned slices. The overall volume rendering reconstruction consists of the following steps: Polygonization of the complete volume data through layer-by-layer processing and generating corresponding image texture; Carrying out essential transformations by vertex processor operations; Rasterization of the polygons into blocks consisting of the corresponding depth and texture coordinate information; Perform a two-pass rendering process: avirtual rendering pass and a main rendering pass to process blocks; Using the fragment processor to project textured blocks and render final images. The block filtration is divided into static block filtration and dynamic block filtration. The static block filtration locates any unused signal being past to the rasterization pipeline; The dynamic block filtration determines any unused block generated due to occlusion. Block filtration process utilizes the vertex shader and pixel shader of GPU in standard PC graphics hardware. The method is designed to be operated in a multi-thread, multi-GPU manner.
FOCUS AREA(S): Display Technologies
KEYWORDS: volume rendering and hardware
MODE OF COLLABORATION: licence
STATUS PATENT: Patent Pending	PATENT NO: NA
ORGANIZATION: CUHK
CONTACT PERSON: Mr Billy Lam	EMAIL: billylam@cuhk.edu.hk
TEL: (852) 2609 8882	FAX: (852) 2603 5451
WEBSITE: http://www.cuhk.edu.hk/rtao/patent/	DATE: