文章基本信息

标题：Accurate Depth Map Computation from Image Focus by Equifocal Plane Approximation
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作者：Seong-O Shim
期刊名称：International Journal of Computer and Information Technology
印刷版ISSN：2279-0764
出版年度：2015
卷号：4
期号：5
页码：788
出版社：International Journal of Computer and Information Technology
摘要：In this paper, a new depth map computation method from image focus based on equifocal plane approximation is proposed. Shape from focus (SFF) is a technique to compute depth map from multiple images of same scene obtained from different focus settings of camera. In SFF, measuring accurate focus value of each pixel in images is most crucial part in final quality of depth map. Traditional SFF techniques compute focus value of a pixel from two-dimensional local neighborhood. However, in optics with small depth of field, local neighborhood pixels have different level of focus and it lead to inaccurate focus value computation. To overcome this problem, we try to search local equifocal plane on each pixel where the neighboring pixels on this plane have same level of focus. Experimental results show the proposed method produces more accurate depth map in comparison to previous SFF methods
关键词：component; depth map; shape from focus (SFF); ; image focus; equifocal plane