Alien Anomalies

Humanoid, in your post about fungus and lichen, you refer me to false colour article on wikipedia. In that it also goes into pseudo colour and says this about it.

A pseudo-color image is derived from a greyscale image by mapping each pixel value to a color according to a table or function. A familiar example is the encoding of altitude using hypsometric tints in physical relief maps, where negative values (below sea level) are usually represented by shades of blue, and positive values by greens and browns. Pseudo-coloring can make some details more visible, by increasing the distance in color space between successive gray levels. Pseudo-coloring can be used to store the results of image elaboration; that is, changing the colors in order to ease understanding the image[1]. Alternatively, depending on the table or function used, pseudo-coloring may increase the information contents of the original image, for example adding geographic information, combining information obtained from infra-red or ultra-violet light, or MRI scans[2].

I was wondering, reading this, if we could use this kind of processing to bring out details where there are not enough other-filter photos available(to produce a colour representation) - since it only needs one greyscale picture to produce pseudo-colour. Obviously, there is no altitude  details but we may be able to produce something worthwhile. I dont know how hard it is.

PHP and graphics design? Why all the hassle when it could be done with Photoshop, GIMP and I suppose other programs? Better still, there's a dedicated photo colorization software like BlackMagic or Recolored that'll do the hard job for you.