On Optimal Illumination for DOVID Description Using Photometric Stereo

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• 关键词：Optimal illumination directions ; Photometric stereo ; Diffractive optically variable image devices (DOVID) industrial inspection
• 刊名：Lecture Notes in Computer Science
• 出版年：2015
• 出版时间：2015
• 年：2015
• 卷：9386
• 期：1
• 页码：553-565
• 全文大小：1,698 KB
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• 作者单位：Daniel Soukup (19)
  Svorad Štolc (19)
  Reinhold Huber-Mörk (19)
  
  19. Digital Safety & Security Department, AIT Austrian Institute of Technology GmbH, Donau-City-Straße 1, 1220, Vienna, Austria
  
• 丛书名：Advanced Concepts for Intelligent Vision Systems
• ISBN：978-3-319-25903-1
• 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

Diffractive optically variable image devices (DOVIDs) are popular security features used to protect security documents such as banknotes, ID cards, passports, etc. Nevertheless, checking authenticity of these security features on both user as well as forensic level still remains a challenging task, requiring sophisticated hardware tools and expert knowledge. Based on a photometric acquisition setup comprised of 32 illumination sources from different directions and a recently proposed descriptor capturing the illumination dependent behavior, we investigate the information content, illumination pattern shape and clustering properties of the descriptor. We studied shape and discriminative power of reduced illumination configurations for the task of discrimination applied to DOVIDs using a sample of Euro banknotes.