Printer/monitor incompatibilities Gamut –Colors in one that are not in the other –Different whitepoint –Complements of one not in the other Luminance.

Slides:

Advertisements

Similar presentations

Light (or the ELECTROMAGNETIC SPECTRUM)

Advertisements

An Introduction to Mixing Colors.

How Do We Mix Color? How do determine complimentary color?

The Ray Box: Part Two. Law of Refraction The law of refraction for light states that a light ray is bent away from its original direction when it passes.

Light and Color. Light interacting with matter When light hits matter, at least one of three things can happen: – Reflection When light bounces off an.

Visible Light and Color

CP Physics Mr. Miller. General Information  Sir Isaac Newton – first to realize white light composed of different colors  Prisms – separate white light.

Fundamentals of Digital Imaging

The eyes have three different kinds of color receptors; One kind is most sensitive to short wavelengths, one to middle wavelengths, and one to long wavelengths.

Multi-media Graphics JOUR 205 Color Models & Color Space 5 ways of specifying colors.

Color Mixing There are two ways to control how much red, green, and blue light reaches the eye: “Additive Mixing” Starting with black, the right amount.

R+G+B vs. gray, LCD projector.

Chapter 9: Color Color mixtures –Additive Mixing –Partitive Mixing –Subtractive Mixing Colored Inks and Paint –Watercolors –CMYK Printing –Halftones.

Commercial Printing Processes TPC November 2001 Barbara Manning.

1 Internet Graphics. 2 Representing Images  Raster Image: Images consist of “dots” of color, not lines  Pixel: Picture element-tiny rectangle  Resolution:

Color Systems. Subtractive Color The removal of light waves to perceive color: –Local or physical attributes of pigments, dyes, or inks reflect certain.

Color Theory Designing with color. The Color Wheel.

Screen Ruling, Print Resolution AM, FM and Hybrid Halftoning Sasan Gooran Linköping University LiU-Norrköping.

C O L O R S PRINT VS MULTIMEDIA. Main Difference Print –Primary Colors CMYK Cyan, Magenta, Yellow, Black - Subtractive Color system –Add together = black.

CMYK vs. RGB Design. Primary colors The colors that make up the base for every other color created. Depending on whether you are looking at it from science,

Physics Talk 5.10 Making Different Lights and Paints

Colour Wheel How to mix the colours you want!. Additive color refers to the mixing of colors of light. This example shows how the light from red, green.

Red, green and blue (RGB): RGB is another way to use 3 numbers to specify a color instead of using an intensity-distribution curve or HSB In addition.

COLOR Chapter 14, Section 4 Pg Pigment Colors Mixing color of pigment (i.e.) paints is different than mixing colors of light. Mixing color of.

Light & Color What happens to the light that strikes an object? What determines the color of opaque, transparent & translucent object? How is mixing pigments.

Light and color.

Looking at Colors! and Colored Light Lessons 11 & 12.

Digital Media Lecture 7: Color part 2 Georgia Gwinnett College School of Science and Technology Dr. Jim Rowan.

18.1 Light and Color Pg

Color & Polarization.

Now let’s focus on… The visible spectrum The visible spectrum –Light and pigment.

Color & Light Benjamin Hammel image by refeia

Color Theory. Which colours is white light made of?

Light and Color There are 3 primary colors of light RED, GREEN, & BLUE

Colors of Pigment The primary colors of pigment are magenta, cyan, and yellow. [

R O Y G B V ellowreenrangelueiolet LONG SHORT ed low energy high energy.

Lesson 2. Review - Energy in a Wave A wave is a disturbance that transfers energy from one point to another without transferring matter. In a water wave,

Different frequencies of “visible light”

22.3 Using Color pp Mr. Richter. Agenda  Warm-Up  Review HW  Notes:  How We See Objects  Mixing Pigments (The Subtractive Color Process)

COLOR THEORY Color is the eye’s response to the visual spectrum from red to violet. Different colors in the spectrum are created by different wavelengths.

Light and Color Light. When light strikes an object, the light can be reflected, transmitted, or absorbed. Think about a pair of sunglasses. What Determines.

Mixing Colors Chapter Notes. White Light Recall that when the frequencies of all visible light is mixed together, it produces white White also.

 There are 3 primary colors of light RED, GREEN, & BLUE  When these colors of light are mixed… White Light is produced  This process is called color.

1 of 32 Computer Graphics Color. 2 of 32 Basics Of Color elements of color:

Color. The Color Spectrum ROY G BiV Black and white Solar Spectrum Colors of Objects Check Question.

Additive & Subtractive Digital Color

LIGHT, COLOR, AND WAVE INTERACTION.

Half Toning Dithering RGB CMYK Models

How do we see colour?.

COLOR THEORY Color is the eye’s response to the visual spectrum from red to violet. Different colors in the spectrum are created by different wavelengths.

Design Concepts: Module A: The Science of Color

The Colour of Objects: Subtractive colour theory.

Colour Mixing Dr Huw Owens

18.1: Light Key concepts: What happens to the light that strikes an object? What determines the color of an opaque, transparent, or translucent object?

Chapter 12 COLOR THEORY.

How would you describe the color RED to a person who cannot see?

DIGITAL HALFTONING Sasan Gooran.

Colour Theories.

Two ways to discuss color 1) Addition 2) Subtraction

What Color is it?.

Color Model By : Mustafa Salam.

Chapter 3 – Light 3.1 Light and Color.

Ch Light II. Light and Color (p ) Light and Matter

Ch Light II. Light and Color (p ) Light and Matter

Presentation transcript:

Printer/monitor incompatibilities Gamut –Colors in one that are not in the other –Different whitepoint –Complements of one not in the other Luminance ranges have different quantization (especially gray)

Photography, Painting Photo printing is via filters. Really multiplicative (e.g..2 x.2 =.04) but convention is to take logarithm and regard as subtractive. Oil paint mixing is additive, water color is subtractive.

Printing Inks are subtractive –Cyan (white - red) –Magenta (white - green) –Yellow (white - blue) In practice inks are opaque, so can’t do mixing like oil paints. May use black ink on economic and physical grounds

Halftoning The problem with ink: it’s opaque Screening: luminance range is accomplished by printing with dots of varying size. Collections of big dots appear dark, small dots appear light. % of area covered gives darkness.

Halftoning references A commercial but good set of tutorials Digital Halftoning, by Robert Ulichney, MIT Press, 1987Digital Halftoning Stochastic halftoning

Color halftoning Needs screens at different angles to avoid moire Needs differential color weighting due to nonlinear visual color response and spatial frequency dependencies.