Pyrometry image processing

Temperature maps

Grayscale pyrometry: currently basic; uses grayscale opencv import, then just applies a jet filter. Doesn't yet copy the full impl in the paper.

Ratio pyrometry: pretty damn close to what's in the paper but it's very broken atm

Test image:

Grayscale pyrometry result:

Ratio pyrometry result (with 2x2 convolutional smoothing):

According to general researcher consensus, ratio pyrometry is supposed to be more accurate.