1 / 6

Colorimetry

Colorimetry. Seminary 4. Problem 4.1 The colors of TV Using the CIE chromaticity diagram, let us determine the luminance, the dominant wavelength, the excitation purity of the basic FCC RGB colors. R FCC : ( R , G , B )=(1, 0, 0) → X =0.61, Y =0.3, Z =0 → x =0.67, y =0.33

mira
Download Presentation

Colorimetry

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. Colorimetry Seminary 4

  2. Problem 4.1 The colors of TV Using the CIE chromaticity diagram, let us determine • the luminance, • the dominant wavelength, • the excitation purity of the basic FCC RGB colors. RFCC: (R,G,B)=(1, 0, 0) →X=0.61, Y=0.3, Z=0→ x=0.67, y=0.33 GFCC: (R,G,B)=(0, 1, 0) →X=0.17, Y=0.59, Z=0.07 → x=0.20, y=0.71 BFCC: (R,G,B)=(0, 0, 1) →X=0.2, Y=0.11, Z=1.12 → x=0.14, y=0.08

  3. RFCC: x=0.67, y=0.33 GFCC: x=0.20, y=0.71 BFCC: x=0.14, y=0.08 λR=610 nm λG=536 nm λB=470 nm ep=a/(a+b) eR=1.0, eG=0.8, eB=0.9 b GFCC a RFCC E BFCC

  4. Problem 4.2 The most common analogous input of a TV set is the compo-nent video. It has three pairs of wire: one for the luminance (Y) signal, and two for the chrominance, i.e., the CR=R-Y and CB=B-Y signals. a) What color we will see the bride’s white robe if we inter-change the two chrominance cables? b) What kind of colors are insensitive for the change of chrominance signals?

  5. Problem 4.3 Resolution of the human eye It’s a well known statement that the Great Wall is the only human made object that can be seen from the Moon’s surface with naked eye. On the basis of your knowledge about the human eyesight, decide if it it is true or not. Help: The Earth–Moon average distance is 385,000 km, and the resolution of the human eye is approx. 2’.

  6. Problem 4.4 TVcolorimetry The component video signal of a pixel on a color monitor are CR=0.35, CB=–0.15 and Y=0.45. a) What are the R,G,B components of the pixel? b) What color we see the pixel? c) What ratio we should mingle a standard C white (R=G=B) and an RGB basic color to earn the above hue? d) Estimate the excitation purity of the pixel’s color!

More Related