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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50926

Title: Maximum-likelihood directivity for depicting perceptual contours
Authors: Chun-Shun Tseng
Jung-Hua Wang
Ren-Jie Huang
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: Maximum-Likelihood Estimation
perceptual contours
directivity
entropy
Date: 2016-04
Issue Date: 2018-11-01
Publisher: Journal of Marine Science and Technology-Taiwan
Abstract: Abstract: This paper presents a novel method based on MaximumLikelihood
Estimation (MLE) to evaluate pixel directivity for
depicting image contours of objects as perceived by human
eyes. The method is characterized by employing discrete masks
with different shapes centered at a target pixel to sample gradient
orientations of neighboring pixels for evaluating directivity
of the target pixel, and applying MLE to determine one
of these discrete sampling masks that best fits the orientation
similarity of the target pixel. We show that such a fitting process
in effect fulfils the similarity and proximity laws in Gestalt
theory, and a salient alignment location can be determined by
subjecting the optimal directivity in conjunction with the
gradient magnitude of the target pixel to a Bayesian process.
Finally, the directivity of salient alignment locations is incorporated
with the extension field (Guy and Medioni, 1992)
to detect perceptual contours. Experiments tested on complex
images and underwater images are provided to justify the superiority
of the work over others.
Relation: 24(2) pp.152-162
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50926
Appears in Collections:[電機工程學系] 期刊論文

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