【作者】 杨立志；

【导师】 顾耀林；

【作者基本信息】 江南大学 ， 计算机应用技术， 2007， 硕士

【摘要】 图像浏览是近年来信息可视化领域中迅速发展起来的一项具有重要科研意义和实用价值的崭新技术。本文对目前已有的多种浏览技术的主要思想、实现方法、实现效果等方面作了深入细致的研究和分析,尤其是对其中较典型的技术,如鱼眼视图技术,基于时空关系的Zooming-Panning技术做了实践验证。在此基础上,本文从浏览效果的角度和技术实现的角度分别对这些技术中存在的优缺点进行了对比和讨论。在研究中我们发现,基于时空关系的Zooming-Panning技术的构思具有许多优点,采用该技术的主要思想实现图像浏览,不仅能够为焦点图像提供适当的背景信息,而且它所采用的可视化表示形式非常适合人们获取信息的特点。但该技术在具体的技术实现上不够全面,既不能保证可视化表示的结构具有一致性,也不能使可视化表示具有良好的显示效果。针对这一情况,本文依据几何光学的有关原理,实现了一个能够对可视化表示动态跟踪调节的跟随因子,用于补充该技术在实现上的不足,并同时把该技术提出的两个标准扩充为三个,本文把经过以上补充工作后形成的结果称为基于自约束路径的Zooming-Panning浏览技术。并通过实践证明:基于自约束路径的Zooming-Panning技术具有良好的浏览效果。同时,为了能有效地利用跟随因子,本文还对图像缩放技术进行了相关研究,并针对浏览技术具有实时性强,分辨率高的特点,提出了一种基于有理二次样条曲线的图像放大方法,经过实验,表明该方法能够很好的满足浏览技术的需要,具有较好的效果。更多还原

【Abstract】 Image Browsing is a new method with a great value to scientific researches and practical applications in the field of information visualizing, and it was rapidly developed in recent years.In this paper, the main ideas, the operating ways and the effects of some existed techniques are presented and analyzed in detail. Especially several typical techniques such as Fish-eye views, Zooming-Panning browsing method based on the relationship of time and space, are checked by experiments. Moreover, the existing merits and demerits are compared and discussed from the navigation effects and realization techniques. In the process of research, some advantages have been found in the Zooming-Panning browsing method based on the relationship of time and space. According to it, some suitable background information is offered to the focus of views, and also a good form of visualized show is taken to meet the need of people who scoop information. However, the concrete realization techniques are insufficiency. It could neither make the structure of the visualized show consistent nor display a good effect. Aiming at the statements above, a following-element is created to make up the shortages of this technique in the paper. Its concept and realized formula are given on the theory of geometric optics. We also have extended two standards which are mentioned in the navigation technique of Zooming-Panning browsing method based on relationship of time and space, and then we introduce a new technique named Zooming-Panning navigation images based on Automatic-control route. It has been examined very well by our experiments.Simultaneity, in order to make the following-element meet the special need, that is to say, with strong real-time and high resolving power of navigation techniques, we have researched the images zooming techniques either, and have given a new images enlargement technique named A method of image enlargement based on curves of rational quadratic spline. It has been examined by our experiments that the method could be applied to navigation techniques and worked very well.更多还原