WolframAlpha.com
WolframCloud.com
All Sites & Public Resources...
Products & Services
Wolfram|One
Mathematica
Wolfram|Alpha Notebook Edition
Finance Platform
System Modeler
Wolfram Player
Wolfram Engine
WolframScript
Enterprise Private Cloud
Application Server
Enterprise Mathematica
Wolfram|Alpha Appliance
Enterprise Solutions
Corporate Consulting
Technical Consulting
Wolfram|Alpha Business Solutions
Resource System
Data Repository
Neural Net Repository
Function Repository
Wolfram|Alpha
Wolfram|Alpha Pro
Problem Generator
API
Data Drop
Products for Education
Mobile Apps
Wolfram Player
Wolfram Cloud App
Wolfram|Alpha for Mobile
Wolfram|Alpha-Powered Apps
Services
Paid Project Support
Wolfram U
Summer Programs
All Products & Services »
Technologies
Wolfram Language
Revolutionary knowledge-based programming language.
Wolfram Cloud
Central infrastructure for Wolfram's cloud products & services.
Wolfram Science
Technology-enabling science of the computational universe.
Wolfram Notebooks
The preeminent environment for any technical workflows.
Wolfram Engine
Software engine implementing the Wolfram Language.
Wolfram Natural Language Understanding System
Knowledge-based broadly deployed natural language.
Wolfram Data Framework
Semantic framework for real-world data.
Wolfram Universal Deployment System
Instant deployment across cloud, desktop, mobile, and more.
Wolfram Knowledgebase
Curated computable knowledge powering Wolfram|Alpha.
All Technologies »
Solutions
Engineering, R&D
Aerospace & Defense
Chemical Engineering
Control Systems
Electrical Engineering
Image Processing
Industrial Engineering
Mechanical Engineering
Operations Research
More...
Finance, Statistics & Business Analysis
Actuarial Sciences
Bioinformatics
Data Science
Econometrics
Financial Risk Management
Statistics
More...
Education
All Solutions for Education
Tech & Trends
Machine Learning
Multiparadigm Data Science
High-Performance Computing
Quantum Computation Framework
Software & Web
Software Development
Authoring & Publishing
Interface Development
Web Development
Sciences
Astronomy
Biology
Chemistry
More...
All Solutions »
Learning & Support
Learning
Wolfram Language Documentation
Fast Introduction for Programmers
Wolfram U
Videos & Screencasts
Wolfram Language Introductory Book
Webinars & Training
Summer Programs
Books
Need Help?
Support FAQ
Wolfram Community
Contact Support
Premium Support
Paid Project Support
Technical Consulting
All Learning & Support »
Company
About
Company Background
Wolfram Blog
Events
Contact Us
Work with Us
Careers at Wolfram
Internships
Other Wolfram Language Jobs
Initiatives
Wolfram Foundation
MathWorld
Computer-Based Math
A New Kind of Science
Wolfram Technology for Hackathons
Student Ambassador Program
Wolfram for Startups
Demonstrations Project
Wolfram Innovator Awards
Wolfram + Raspberry Pi
Summer Programs
More...
All Company »
Search
Legacy Documentation
Digital Image Processing
(2000)
This is documentation for an obsolete product.
Current products and services
Function Index
ToCIELUVColor
ToCIELUVColor[
img
]
returns an
ImageData
expression with
ColorFunction
→
CIELUVColor
given an
RGBColor
image or a meshed or planar array of pixel values.
CIELUVColor
is the 1976 CIE (
Commission Internationale de L
'
Eclairage
) perceptually uniform L
*
u
*
v
*
color space.
The
RGBColor
to
CIELUVColor
transformation is based on the following formulas:
,
u
*
= 13 L
*
(u-u
n
),
v
*
= 13 L
*
(v-v
n
).
Intermediate values u, v and u
n
, v
n
are defined:
,
,
,
,
where X, Y, and Z are the
CIEXYZColor
tristimulus values and X
n
, Y
n
, and Z
n
are the tristimulus values of the reference white point defined by the value of the option
Illuminant
.
ToCIELUVColor
returns ligthness in the range 0≤L
*
≤100, and the two color components ranging approximately -100≤u
*
, v
*
≤100.
The options
Chromaticity
and
Illuminant
may be used to modify particular attributes of the transformation.
See also User's Guide
3.5
.
New in Version 2.
Example
This loads the package.
In[1]:=
This reads an RGB color example image and scales the image to the range {0,1}.
In[2]:=
Out[2]=
This returns a
CIEXYZColor
image.
In[3]:=
Out[3]//InputForm=
Enable JavaScript to interact with content and submit forms on Wolfram websites.
Learn how »