PDF集群并行解析显示技术研究

摘要

A PDF parsing and parallel display technology on cluster is presented to solve high resolution display problem. The importance of the PDF rendering in the tile high resolution system and the PDF format and hierarchical relationship are analyzed. The advantages and disadvantages of both poppler and mupdf library are studied to parse PDF information on cluster and parallel display on the tiled high res-olution system. And use these two libraries to achieve the PDF file parsing and cluster parallel display on the tiled high resolution system. The comparison tests show that the display results are clearer and more efficient for PDF parsing with mupdf library in the cluster parallel tiled high resolution display system. Also,the display resolution of PDF information is greatly increased by the PDF parsing and parallel display technology.%针对大型拼接显示系统对PDF文件高分辨显示的需求，文中研究了集群并行高分辨信息显示平台的显示技术，分析了PDF在大屏显示系统中的重要性以及PDF文件格式和层次关系，研究并探讨了poppler库和mupdf库的优缺点，以及对PDF文件格式的解析与显示技术，并基于poppler库和mupdf库分别实现了PDF文件的解析和集群并行显示。通过对比实验，采用mupdf库能够更清晰、高效地实现PDF集群并行显示，验证了文中提出的PDF集群并行解析显示技术可极大地提高大型拼接显示系统对PDF文件的高分辨显示处理能力。