改善异构文档阅读体验的适配方法

Retargeting of Heterogeneous Document to Improve Reading Experience

人们越来越多的依赖于移动终端设备阅读各种数字内容。这些设备在屏幕分辨率、长宽比等参数上的差异对数字内容的处理提出了新的挑战,图像适配成了近年的研究热点。各种内容敏感的方法被提出以解决如何在图像缩放时减少重要物体的严重扭曲。然而,对于以图像形式存在的、包含不同元素的异构文档,由于其分辨率一般比较高,在小尺寸的移动设备上只能部分显示以保证可读性,用户不得不频繁地进行缩放、平移以阅读整个文档,极大的影响了阅读效率。为此提出了一种针对异构文档的适配方法,通过对文档布局的局部分析,自动抽取得到用户拟阅读的矩形区域,并适配到屏幕上,避免了繁琐的缩放、平移操作,极大地提高了阅读的效率。

People rely more and more on mobile devices to read various digital contents.The ariation on parameters such as screen resolution,aspect ratio of these devices presents new hallenges on digital content processing.Image retargeting has become popular in the past decade.Various content-aware methods are presented to reduce the distortion of important object when the image is scaled.However,for those bitmap represented heterogeneous documents which contains arious elements,due to the high resolution,it can only be partially displayed on devices with small screen region.Frequently switch between scale and translate are required to read the whole document,which obviously affect user's reading experience.We propose a retargeting method for heterogeneous document.We firstly analysis the layout of document in a local manner,and then extract the appropriate rectangular reading area and resize it to match the screen.Our method avoids the tedious scale and translation operations,and thus improves the reading experience greatly.