1 / 9

Graphics

Graphics. Problem Solving with Computers. What is a Color Model?. A method for representing colors Each color is normally represented by a triple Color models include: RGB CMY[K] HLS. complimentary colors two colors that make white light primary colors basic set of 3 colors for a model

fraley
Download Presentation

Graphics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Graphics Problem Solving with Computers

  2. What is a Color Model? • A method for representing colors • Each color is normally represented by a triple • Color models include: • RGB • CMY[K] • HLS

  3. complimentary colorstwo colors that make white light primary colorsbasic set of 3 colors for a model color gamutrange of colors derived from model’s primary colors dominant frequency (or wavelength)hue brightnessintensity of a color saturationpurity of a color chromaticitypurity and dominant frequency combined Some terms ...

  4. In the eye … Rods sense the intensity light at low intensities Cones sense the intensity of light at moderate to high levels Cones exist for red, green and blue light How do we see color?

  5. RGB • Red – Green - Blue

  6. CMY[K] • Cyan, Magenta, Yellow [, Black] • Subtractive color model • Used in printing

  7. HLS L = 1 • Hue • Lightness • Saturation Green 120 L = 0.5 Red 0 Blue 240 H L = 0 S

  8. Bit-mapped Images • Pixel • Smallest directly addressable part of an image • Generally rectangular • Arranged in rows and columns • Resolution • Relative density of pixels

  9. Bit-mapped Images Both of these images have the same number of pixels

More Related