class+9+posted+_color+vision_

class+9+posted+_color+vision_ - Sensation and Perception...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Sensation and Perception Class IX: Color Vision
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Practical Notes: Exams are now graded, and scores posted on Sakai. To see your exam, you can make an appointment with Marley at: [email protected]
Background image of page 2
Figure 5.4 The two wavelengths that produce the same response from one type of cone (M), produce different patterns of responses across the three types of cones (S, M, and L)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Trichromacy Trichromacy : The theory that the color of any light is defined in our visual system by the relationships of three numbers, the outputs of three receptor types now known to be the three cones Also known as the Young–Helmholtz theory
Background image of page 4
Trichromacy Metamers : Different mixtures of wavelengths that look identical. More generally, any pair of stimuli that are perceived as identical in spite of physical differences
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Figure 5.6 If two sets of lights produce the same responses, they are metamers and must look identical
Background image of page 6
Trichromacy Additive color mixing : A mixture of lights If light A and light B are both reflected from a surface to the eye, in the perception of color the effects of those two lights add together
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Figure 5.9 Georges Seurat’s painting La Parade (1887–1888) illustrates the effect of additive color mixture with paints
Background image of page 8
Trichromacy Subtractive color mixing : A mixture of pigments If pigment A and B mix, some of the light shining on the surface will be subtracted by A and some by B. Only the remainder contributes to the perception of color
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Figure 5.7 In this example of subtractive color mixture, “white”—broadband—light is passed through two filters
Background image of page 10
Color space : A three-dimensional space that describes all colors. There are several possible color spaces RGB color space: Defined by the outputs of long, medium, and short wavelength lights HSB color space: Defined by hue, saturation, and brightness Hue: The chromatic (color) aspect of light
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/17/2011 for the course PSYCHOLOGY 830:301 taught by Professor Staff during the Spring '10 term at Rutgers.

Page1 / 41

class+9+posted+_color+vision_ - Sensation and Perception...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online