NDLI: Colorto grayscale image conversion using modulation domain quadratic programming

Content Provider	IEEE Xplore Digital Library
Author	Nguyen, C.T. Havlicek, J.P.
Copyright Year	2015
Description	Author affiliation: Sch. of Electr. & Comput. Eng., Univ. of Oklahoma, Norman, OK, USA (Nguyen, C.T.; Havlicek, J.P.)
Abstract	We propose a new polynomial-time grayscale conversion algorithm applicable to general color images. The output grayscale image is modeled as a linear combination of three color channels where the mixing coefficients are computed by a constrained quadratic programming scheme using modulation domain features of the input color image. The optimization is formulated such that local color space distances between pixels in the input image are approximately preserved in the output grayscale image. Our experimental results demonstrate that the proposed method performs favorably compared to state-of-the-art conversion algorithms, often producing a grayscale image with better visual distinctions between patches that are close in the color space of the original image.
Starting Page	4580
Ending Page	4584
File Size	4957174
Page Count	5
File Format	PDF
e-ISBN	9781479983391
DOI	10.1109/ICIP.2015.7351674
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image color analysis Gray-scale Computational modeling Color Optimization Frequency modulation AM-FM grayscale conversion quadratic constrained least squares
Content Type	Text
Resource Type	Article

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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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