Evaluation of visual impact of multiple image characteristics observed in edge-grain patterns

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• 作者：Masashi Nakamura (1)
  Saki Nakagawa (1)
  Takato Nakano (1)
  
  1. Graduate School of Agriculture ; Kyoto University ; Kitashirakawa Oiwake-cho ; Sakyo-Ku ; Kyoto ; 606-8502 ; Japan
  
• 关键词：Edge ; grain pattern ; Sensory evaluation ; Image characteristics ; Visual impression ; Multiple regression analysis
• 刊名：Journal of Wood Science
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：61
• 期：1
• 页码：19-27
• 全文大小：971 KB
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• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Wood Science and Technology
  Materials Science
  Characterization and Evaluation Materials
  
• 出版者：Springer Japan
• ISSN：1611-4663

文摘

Twenty distinct computer-generated softwood-like monochrome edge-grain patterns were printed on matte paper. Four image characteristics including mean growth ring width, growth ring width fluctuation, growth ring contrast, and shading contrast were embedded in the patterns. These image characteristics were expressed numerically by line profile and multiresolution contrast analyses. Five visual impressions, varied, agreeable, vague, showy, and natural, of these patterns on 30 subjects were evaluated by ranking. To determine the importance of each image characteristics on the impressions, a multiple regression analysis was conducted by attributing a criterion variable to an impression and predictor variables to all four image characteristics. This analysis revealed the impacts of the four image characteristics on each impression quantitatively. The results suggested that shading contrast was one of the useful indicators to evaluate surface harmony or homogeneity related to varied impression. Although growth ring width fluctuation had been considered as an important visual feature of wood, its influence on the impressions was extremely small compared with the other three characteristics.