An Approach to Detect and to Code ROI of Scanned Document Based on Segmentation
Wang Qia, Zhongfu Wu · Dianzi xuebao · 2002
This paper proposes a new approach to adaptively detect and to code the region of interest of scanned document, which makes use of the result of a fast segmentation algorithm based on the bi-level reduced image in order to satisfy the needs of application of the digital library.The paper firstly describes in detail a block technique to reduce the original image,a modified smearing method to simplify computation and a fast segmentation algorithm. Based on the result of document segmentation, the paper then introduces a generating algorithm of ROI mark image and the max-shift method of document compression. Finally the paper shows an example of compressing scanned document, which includes both picture areas and text areas, by means of our scheme.