Color and Color Perception - PowerPoint PPT Presentation

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Color and Color Perception

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  1. Color and Color Perception

  2. a physicists view of color…

  3. a human view of color…

  4. how many “colors” did you see? wavelength-wise I only gave you red, white and black all burger images from: http://people.msoe.edu/~taylor/eisl/land.htm

  5. let’s have a look at a white screen • should have all wavelengths in it …

  6. red…

  7. green

  8. blue

  9. and everything in-between … 100% red 100% green 100% blue the yellow’s and purples are a bit crappy, but we can fix that:

  10. color spaces…

  11. what did you find in your color assignment ? • how does color change during the day? • which colors are more pleasing? • how can we change that ?

  12. a close-up of your camera sensor Bayer pattern http://en.wikipedia.org/wiki/File:Bayer_pattern_on_sensor.svg

  13. white balance… • your camera records only red, green and blue… • the way your colors look is determined how these three colors are weighted by your camera and any image processing software • on-camera controls - white balance