Image Retargeting via Beltrami Representation

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

16 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Article number8418383
Pages (from-to)5787-5801
Number of pages15
Journal / PublicationIEEE Transactions on Image Processing
Volume27
Issue number12
Online published23 Jul 2018
Publication statusPublished - Dec 2018
Externally publishedYes

Abstract

Image retargeting aims to resize an image to one with a prescribed aspect ratio. Simple scaling inevitably introduces unnatural geometric distortions on the important content of the image. In this paper, we propose a simple and yet effective method to resize an image, which preserves the geometry of the important content, using the Beltrami representation. Our algorithm allows users to interactively label content regions as well as line structures. Image resizing can then be achieved by warping the image by an orientation-preserving bijective warping map with controlled distortion. The warping map is represented by its Beltrami representation, which captures the local geometric distortion of the map. By carefully prescribing the values of the Beltrami representation, images with different complexity can be effectively resized. Our method does not require solving any optimization problems and tuning parameters throughout the process. This results in a simple and efficient algorithm to solve the image retargeting problem. Extensive experiments have been carried out, which demonstrate the efficacy of our proposed method.

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Research Area(s)

  • Beltrami representation, Content-aware image resizing, feature preserving, image retargeting, warping map

Bibliographic Note

Publisher Copyright: © 1992-2012 IEEE.

Citation Format(s)

Image Retargeting via Beltrami Representation. / Lau, Chun Pong; Yung, Chun Pang; Lui, Lok Ming.
In: IEEE Transactions on Image Processing, Vol. 27, No. 12, 8418383, 12.2018, p. 5787-5801.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review