NDLI: Selection of Optimal Spectral Sensitivity Functions for Color Filter Arrays

Content Provider	IEEE Xplore Digital Library
Author	Parmar, M. Reeves, S.J.
Copyright Year	1992
Abstract	A color image meant for human consumption can be appropriately displayed only if at least three distinct color channels are present. Typical digital cameras acquire three-color images with only one sensor. A color filter array (CFA) is placed on the sensor such that only one color is sampled at a particular spatial location. This sparsely sampled signal is then reconstructed to form a color image with information about all three colors at each location. In this paper, we show that the wavelength sensitivity functions of the CFA color filters affect both the color reproduction ability and the spatial reconstruction quality of recovered images. We present a method to select perceptually optimal color filter sensitivity functions based upon a unified spatial-chromatic sampling framework. A cost function independent of particular scenes is defined that expresses the error between a scene viewed by the human visual system and the reconstructed image that represents the scene. A constrained minimization of the cost function is used to obtain optimal values of color-filter sensitivity functions for several periodic CFAs. The sensitivity functions are shown to perform better than typical RGB and CMY color filters in terms of both the s-CIELAB ΔE error metric and a qualitative assessment.
Sponsorship	IEEE Signal Processing Society
Page Count	14
File Size	1845264
Starting Page	3190
Ending Page	3203
File Format	PDF
ISSN	10577149
Volume Number	19
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Filters Sensor arrays Image reconstruction Layout Color Humans Cost function Digital cameras Image sensors Image sampling filter spectral sensitivity function Color filter array (CFA) demosaicking
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Software

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

Regularization Approaches to Demosaicking

Adaptive Filtering for Color Filter Array Demosaicking

Color Reproduction From Noisy CFA Data of Single Sensor Digital Cameras

Spatio-Spectral Color Filter Array Design for Optimal Image Recovery

Joint Color Decrosstalk and Demosaicking for CFA Cameras

Binary Tree-based Generic Demosaicking Algorithm for Multispectral Filter Arrays

Color filter array demosaicking: new method and performance measures

Color Filter Array Demosaicking Using High-Order Interpolation Techniques With a Weighted Median Filter for Sharp Color Edge Preservation

Improvement of Color Video Demosaicking in Temporal Domain

Selection of Optimal Spectral Sensitivity Functions for Color Filter Arrays

Similar Documents

Regularization Approaches to Demosaicking

Adaptive Filtering for Color Filter Array Demosaicking

Color Reproduction From Noisy CFA Data of Single Sensor Digital Cameras

Spatio-Spectral Color Filter Array Design for Optimal Image Recovery

Joint Color Decrosstalk and Demosaicking for CFA Cameras

Binary Tree-based Generic Demosaicking Algorithm for Multispectral Filter Arrays

Color filter array demosaicking: new method and performance measures

Color Filter Array Demosaicking Using High-Order Interpolation Techniques With a Weighted Median Filter for Sharp Color Edge Preservation

Improvement of Color Video Demosaicking in Temporal Domain

Selection of Optimal Spectral Sensitivity Functions for Color Filter Arrays