Abstract: Facing on the issues when the press publishes digital content across the terminals, this paper lays special stress on the research of technologies on layout information extraction and across terminal adaptive recombination for the PDF document. The methods of extraction and layout structure analysis to the texts and pictures in the PDF document are proposed. Then the terminal adaptive recombination algorithm is applied to publish the digital content across the terminals. A set of publishing system through which the digital content is published across the terminals based on the above technologies. The experimental results prove that the approach is practical in real-world application.

Key words: Portable Document Format（PDF）, cross terminal adaptive recombination, layout information extraction

摘要： 围绕目前出版社在对数字化内容进行跨终端发布时遇到的问题，重点对PDF文档的版面信息抽取和跨终端自适应重组等技术进行研究，提出了针对PDF文档中文本、图片等信息的抽取方法和版面结构分析方法，利用终端自适应重组算法对数字化内容进行跨终端发布；以此为基础设计了一套数字内容跨终端发布的系统，并应用在出版社的实际工作中，实验结果证明了方案的可行性。

关键词: PDF文件格式, 跨终端自适应重组, 版面信息抽取