On Object Classification: Artificial vs. Natural

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• 作者：Minhwan Kim ; Changmin Park ; Kyongmo Koo
• 刊名：Lecture Notes in Computer Science
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：3656
• 期：1
• 页码：p.532
• 全文大小：533 KB
• 刊物类别：Computer Science
• 刊物主题：Artificial Intelligence and Robotics
  Computer Communication Networks
  Software Engineering
  Data Encryption
  Database Management
  Computation by Abstract Devices
  Algorithm Analysis and Problem Complexity
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1611-3349

文摘

Recently semantic classification of images is of great interest for image indexing applications. On the one hand, researchers in the field of content-based image retrieval are interested in object(s) of interest in an image, which is useful for representing the image. In this paper, we present a semantic classification method of the object(s) of interest into artificial/natural classes. We first show that dominant orientation features in Gabor filtering results of artificial objects are very useful for discriminating them from natural objects. Dominant orientations in artificial object images are not confined to horizontal and/or vertical directions, while those in artificial scene images tend to be greatly confined to them. Two classification measures are proposed; the sum of sector power differences in Fourier power spectrum and the energy of edge direction histogram. They show classification accuracy of 85.8% and 84.8% on a test with 2,600 object images, respectively.