摘要
随着档案图像信息系统越来越多地在Internet和Intranet上得到应用,对档案图像的处理变得越来越迫切,因此,分析和总结数字档案图像的特点就变得十分重要。本文以自然图像为对比项,以分析、总结和编程为手段,得到档案图像的固有特点、直方图特点和统计量特点。结果表明,档案图像具有较高的空间分辨率要求和较低的颜色分辨率要求,具有符号级冗余和版面高度结构化等特点;而且档案图像的直方图特点和统计量特点与自然图像存在明显差异。这些特点导致档案图像的增强和压缩应该有别于自然图像。由于图像特点众多,尚需进一步研究。
With the application development of more and more document image systems used on Internet and Intranet, more and more document image processing requirements are increased. So it＇ s necessary to analyze and summarize the characteristics of the document image. By the comparition of the natural images, through analyzing, summarizing and programming, three kinds of characteristics, including document potential attributes, image histogram attributes and image statistical attributes are pointed out. The study results show that the document image has many potential attributes ： high spatial resolution and low color resolution requirement, character or symbol redundancy and high hierarchical page structure. The study results also showed that there are obvious differences between the document image histogram attributes and the natural image statistical attributes. From these characteristics, the document image processing including enhancement and compression was different from the natural image. A further study of needed to continue because there are many types of digital image characteristics.
出处
《重庆师范大学学报（自然科学版）》
CAS
2010年第1期57-60,共4页
Journal of Chongqing Normal University:Natural Science
基金
云南省2009年社会发展科技计划项目(No.2009ZC128M)
关键词
档案图像
自然图像
图像特点
直方图
图像统计量
document image
natural image
image features
histogram
statistical variables of image
