NDLI: Atmospheric Perspective Effect Enhancement of Landscape Photographs Through Depth-Aware Contrast Manipulation

Content Provider	IEEE Xplore Digital Library
Author	Xiaoyan Zhang Kap Luk Chan Constable, M.
Copyright Year	1999
Abstract	The atmospheric perspective effect is a physical phenomenon relating to the effect that atmosphere has on distant objects, causing them to be lighter and less distinct. The exaggeration of this effect by artists in 2D images increases the illusion of depth thereby making the image more interesting. This paper addresses the enhancement of the atmospheric perspective effect in landscape photographs by the manipulation of depth-aware lightness and saturation contrast values. The form of this manipulation follows the organization of such contrasts in landscape paintings. The objective of this manipulation is based on a statistical study which has clearly shown that the saturation and lightness contrasts inter- and intra- depth planes in paintings are more purposefully organized than those in photographs. This contrast organization in paintings respects the existing contrast relationships within a natural scene guided by the atmospheric perspective effect and also exaggerates them sufficiently with a view to improving the visual appeal of the painting and the illusion of depth within it. The depth-aware lightness and saturation contrasts revealed in landscape paintings guide the mapping of such contrasts in photographs. This contrast mapping is formulated as an optimization problem that simultaneously considers the desired inter-contrast, intra-contrast, and specified gradient constraints. Experimental results demonstrate that by using this proposed approach, both the visual appeal and the illusion of depth in the photographs are effectively improved.
Sponsorship	IEEE Signal Processing Society IEEE Circuits and Systems Society IEEE Communications Society IEEE Computer Society
Starting Page	653
Ending Page	667
Page Count	15
File Size	3059253
File Format	PDF
ISSN	15209210
Volume Number	16
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Painting Atmospheric modeling Organizations Visualization Educational institutions Rivers landscape photograph Atmospheric perspective depth-aware contrast image manipulation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Science Applications Media Technology

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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
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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