NDLI: Structure preservation in content-aware image retargeting using multi-operator

Content Provider	IET Digital Library
Author	Garg, Ankit Negi, Ashish
Abstract	The evolution of image retargeting technique demands the exploitation of multi-operators since they are capable of preserving the structure and salient objects of the image. However, these multi-operators are mostly based on seam carving with scaling or cropping operators which lead to significant distortions in the retargeted image. This study proposes a new multi-operator scheme which has improved seam carving, through the proposed seam diversion based image retargeting algorithm, integrated with the cropping and warping operator. A total of six different multi-operator schemes have been proposed out of which the MO6 technique gave remarkable results in terms of image quality, least distortion, and lowest run-time. To simplify image retargeting operations, an optimised image distance function was used. The optimised image distance function was formulated which combines bidirectional image Euclidean distance, dominant colour descriptor, and an energy-based coefficient to bypass seams from the point where seams start clashing and hence the defined threshold violates. By integrating cropping and warping into the proposed algorithm, it preserves the salient features of the retargeted images. Typical results have been presented which demonstrates the effectiveness of the proposed methods. User-based subjective analysis has also been carried out which shows that image retargeted using the MO6 technique has high user preference.
Starting Page	2965
Ending Page	2975
Page Count	11
ISSN	17519659
Volume Number	14
e-ISSN	17519667
Issue Number	Issue 13, Nov (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/14/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2019.1032
Journal	IET Image Processing
Publisher Date	2020-05-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bidirectional Image Euclidean Distance Computer Vision And Image Processing Technique Content-aware Image Retargeting Cropping Different Multioperator Scheme Distortion Energy-based Image Colour Analysis Image Processing Image Quality Image Retargeting Operation Image Retargeting Technique Image Retrieval Information Retrieval Technique Multioperator Scheme Multioperators Optical, Image And Video Signal Processing Optimisation Optimised Image Distance Function Retargeted Image Salient Objects Seam Carving Seam Diversion Based Image Retargeting Algorithm Seams Structure Preservation User-based Subjective Analysis Warping Operator
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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