Kyrtos：一种用于技术文档中具有曲线的图表自动深入分析的方法
Kyrtos: A methodology for automatic deep analysis of graphic charts with curves in technical documents
AI总结：
Kyrtos方法通过自动识别和分析技术文档中具有曲线的图表，将曲线结构转化为属性图和自然语言文本，提升对技术文档的深入理解能力。
摘要：
深度理解技术文档（DUTD）已成为一个非常有吸引力的领域，由于大量积累的文档和其中所含的有价值知识，具有巨大潜力。此外，技术文档的全面理解依赖于对其特定模态的准确分析，如图形、表格、图表、文本等及其关联。在本文中，我们介绍了Kyrtos方法，用于自动识别和分析技术文档图形图像中具有曲线的图表。识别处理部分采用基于聚类的方法来识别界定构成所展示曲线的线段的中点。分析处理部分解析提取的曲线线段，以捕捉方向、趋势等行为特征。这些关联帮助将识别出的线段的关系转换为属性图，以保持曲线的结构特征。图关系也以自然语言（NL）文本句子的形式表达，丰富了文档的文本内容，便于将其转换为随机Petri网（SPN）图，该图描绘了图表图像中所表示的内部功能。广泛的评估结果展示了Kyrtos的识别和分析方法的准确性，通过测量输入图表曲线与Kyrtos生成的具有多重功能的图表的近似值之间的结构相似性。
英文摘要：
Deep Understanding of Technical Documents (DUTD) has become a very attractive field with great potential due to large amounts of accumulated documents and the valuable knowledge contained in them. In addition, the holistic understanding of technical documents depends on the accurate analysis of its particular modalities, such as graphics, tables, diagrams, text, etc. and their associations. In this paper, we introduce the Kyrtos methodology for the automatic recognition and analysis of charts with curves in graphics images of technical documents. The recognition processing part adopts a clustering based approach to recognize middle-points that delimit the line-segments that construct the illustrated curves. The analysis processing part parses the extracted line-segments of curves to capture behavioral features such as direction, trend and etc. These associations assist the conversion of recognized segments' relations into attributed graphs, for the preservation of the curves' structural characteristics. The graph relations are also are expressed into natural language (NL) text sentences, enriching the document's text and facilitating their conversion into Stochastic Petri-net (SPN) graphs, which depict the internal functionality represented in the chart image. Extensive evaluation results demonstrate the accuracy of Kyrtos' recognition and analysis methods by measuring the structural similarity between input chart curves and the approximations generated by Kyrtos for charts with multiple functions.
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