What are CIE x and y chromaticity coordinates?
It is often convenient to discuss “pure” colour in the absence of brightness. The CIE defines a normalization process to compute “little” x and y chromaticity coordinates: A colour plots as a point in an (x, y) chromaticity diagram. When a narrowband SPD comprising power at just one wavelength is swept across the range 400 nm to 700 nm, it traces a shark-fin shaped spectral locus in (x, y) coordinates. The sensation of purple cannot be produced by a single wavelength: to produce purple requires a mixture of shortwave and longwave light. The line of purples on a chromaticity diagram joins extreme blue to extreme red. All colours are contained in the area in (x, y) bounded by the line of purples and the spectral locus. A colour can be specified by its chromaticity and luminance, in the form of an xyY triple. To recover X and Z from chromaticities and luminance, use these relations: The bible of colour science is Wyszecki and Styles, Color Science [5]. But it’s daunting. For Wyszecki’s ow
Related Questions
- CIE chromaticity diagrams are usually exhibited in a shape of a hoof. Why are the single waves spread on the ellipse side instead of the straight?
- When section cut is drawn in 3D view only X and Y coordinates are provided. How exactly is the section cut plane defined for this case?
- How do I create my own point layer using a table of x - y coordinates?
