National Tsing Hua University Institutional Repository:Objective Quality Assessment for Image Retargeting Based on Perceptual Geometric Distortion and Information Loss
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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Objective Quality Assessment for Image Retargeting Based on Perceptual Geometric Distortion and Information Loss


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    题名: Objective Quality Assessment for Image Retargeting Based on Perceptual Geometric Distortion and Information Loss
    作者: Chih-Chung Hsu;Chia-Wen Lin;Yuming Fang;Weisi Lin
    教師: 林嘉文
    日期: 2014
    出版者: Institute of Electrical and Electronics Engineers
    關聯: IEEE Journal of Selected Topics in Signal Processing, Institute of Electrical and Electronics Engineers, Volume 8, Issue 3, June 2014, Pages 377-389
    关键词: Geometric distortion
    SIFT flow
    image retargeting
    quality assessment
    quality evaluation
    摘要: Image retargeting techniques aim to obtain retargeted images with different sizes or aspect ratios for various display screens. Various content-aware image retargeting algorithms have been proposed recently. However, there is still no effective objective metric for visual quality assessment of retargeted images. In this paper, we propose a novel full-reference objective metric for assessing visual quality of a retargeted image based on perceptual geometric distortion and information loss. The proposed metric measures the geometric distortion of a retargeted image based on the local variance of SIFT flow vector fields of the image. Furthermore, a visual saliency map is derived to characterize human perception of the geometric distortion. Besides, the information loss in the retargeted image, which is estimated based on the saliency map, is also taken into account in the proposed metric. Subjective tests are conducted to evaluate the performance of the proposed metric. Our experimental results show the good consistency between the proposed objective metric and the subjective rankings.
    相関连結: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83643
    显示于类别:[電機工程學系] 期刊論文
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