NDLI: Image colorization with local and global consistency

Content Provider	IEEE Xplore Digital Library
Author	Zong, Gaigai Chen, Ying Cao, Guangcheng Dong, Jiawei Chen, Ying
Copyright Year	2015
Description	Author affiliation: School of Computer Science and Information Engineering, Shanghai Institute of Technology, Shanghai, China (Zong, Gaigai; Chen, Ying; Cao, Guangcheng; Dong, Jiawei) \|\| School of Communication and Information Engineering, Shanghai University, Shanghai, China (Chen, Ying)
Abstract	Image colorization is the technology used to add colors to a grayscale image by computers. A novel image colorization method based on local and global consistency is proposed, which uses an oversegmentation-based graph model and a modified energy function to take advantage of the local and global information of each pixel. An oversegmentation-based graph model is used to approximate each pixel by a linear combination of its neighboring pixels in the same oversegmented region, and the modified energy function based on local and global consistency is smoothness enough with respect to the inherent structure uncovered by colored and uncolored pixels. In contrast to most previous energy functions with the assumption that nearby pixels with close luminance values tend to have close color values, we formulate the assumption that pixels constituting each oversegmented region should have similar colors. Experiments on different types of images show that our approach achieves more robust colorization results compared with two existing approaches. Moreover, we also demonstrate our method on various applications, such as image recolorization and matting.
Starting Page	1043
Ending Page	1047
File Size	2045534
Page Count	5
File Format	PDF
e-ISBN	9781467390989
DOI	10.1109/CISP.2015.7408033
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computers Image segmentation Visualization Image color analysis Gray-scale matting Robustness image colorization Optimization recolorization local and global consistency
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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