Colour temperature is a term that describes how hot or cool a colour is. This is not to be confused with how hot or cool a colour looks. It is well known that photos of cold winter scenes are blueish, and photos of warm sunsets are reddish. The colour temperature of such scenes is actually the opposite; winter scenes have a higher colour temperature than sunsets, because blue light has a higher colour temperature than red light. Similarly, a blue star is hotter than a red star, and blue-hot metal is hotter than red-hot metal. Colour temperature is usually measured in degrees Kelvin. In PMIO, it is measured as a value between 0 and 100, and it is not accurate. A simplified linear calculation is used to get a rough idea of an image's redness or blueness (the correct calculation would produce a curve).
Simplified Colour Temperature
PMIO measures the average colour temperature of every image it encounters while it is creating thumbnails. This information can be used to sort the thumbnails in the order of their overall redness or blueness.
