发明名称 |
Volumetric data organization method that allows for cache efficient rendering speedups and efficient graphics hardware design |
摘要 |
A volumetric data organization method for volume rendering that is both cache efficient and efficient for hardware graphics design and utilization. A volume data set is divided up into a number of smaller sub-volumes or blocks through a process called blocking. The size of each sub-volume is a function of the computer system being used and/or the application program being run. Typical sub-volume sizes are approximately 5% of cache size. Each voxel tuple in a volume data set is converted to a linear address for linear storage in memory. Two techniques are used for blocking: overlapping and non-overlapping. The non-overlapping blocking technique divides the volume data set up into sub-volumes such that each sub-volume contains a unique set of voxels with no overlap of voxels between sub-volumes. The overlapping blocking technique expands each sub-volume to include voxels located on six planes that are located one voxel away from the sub-volume's existing bounding planes. After employing either technique, each sub-volume can be selected as containing desired or non-desired data. The volume rendering system ignores any sub-volumes that do not contain desired data, greatly speeding up rendering time. |
申请公布号 |
GB2325838(B) |
申请公布日期 |
2002.01.16 |
申请号 |
GB19980010156 |
申请日期 |
1998.05.12 |
申请人 |
* HEWLETT PACKARD COMPANY;* HEWLETT-PACKARD COMPANY |
发明人 |
BARTHOLD * LICHTENBELT;HASAN SHAHZAD * NAQVI;TOM * MALZBENDER |
分类号 |
G06T15/08;G06T17/10 |
主分类号 |
G06T15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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