计算机应用研究Issue(11)：3513-3517,3520,6.DOI:10.3969/j.issn.1001-3695.2015.11.074
GPU 快速解压的多分辨率地形高程数据压缩算法
Multi-resolution terrain height-field data compression for rapid GPU decoding
张兵强 1姜本清 1方君1
作者信息
- 1. 海军航空工程学院 信息融合研究所 系统仿真研究室，山东 烟台 264001
- 折叠
摘要
Abstract
To release the burden for massive-data storage and transmission in real-time large terrain visualization systems, based on the multi-resolution pyramid model for terrain data,this paper proposed a compression algorithm for terrain blocks that was suitable for fast decoding on the GPU.At first,the algorithm implemented linear prediction for terrain blocks,and then coded residual errors for lossless compression of the full-resolution data based on RBUC(recursive bottom up complete). The lossless residual coding method reserved the details of the full-resolution data.As for the residual errors on coarser levels in the terrain blocks,it adopted a grouped and quantized coding method for lossy compression.The quantization levels were based on the simplified errors of low-resolution blocks.At last,it designed the processing flow for fast and parallel decompres-sion on GPU.The experimental results show that the algorithm can be used to compress terrain height-field datasets effectively and supports real-time decompression with high efficiency.关键词
地形可视化/DEM数据/数据压缩/多分辨率模型/图形处理器Key words
terrain visualization/DEMdata/data compression/multi-resolution model/GPU分类
信息技术与安全科学引用本文复制引用
张兵强,姜本清,方君..GPU 快速解压的多分辨率地形高程数据压缩算法[J].计算机应用研究,2015,(11):3513-3517,3520,6.
