讨论了数字电影行业对图像处理技术的要求,分析了提高数字电影图像处理性能的几个关键技术点。首先实现了符合数字电影规范的JPEG2000图像编码;然后通过优化小波变换的cache命中率、采用MPI并行计算、优化文件系统以及优化编译等方法,对数字电影中的图像处理技术进行了全面的研究和实现,大幅度提高了图像的处理效率。
This paper discussed the requirements of image process technology in digital cinema industry, and analyzed several key technology points of improving image processing performance. First realized the JPEG2000 compression tool which met DCI ( digital cinema initiatives) standard. And then improved coding efficiency significantly by some approaches including optmiz- ing cache hit rate in DWT and using MPI parallelism programming, and technologies such as parrallel file system and compi- ling optimization. Through these overall research and implementation, the image processing efficiency is improved a lot.