Just played with this Seek Thermal
"oryginal sensor" image provided by
@marshallh and resized down to 208x156 pixels size without any interpolation, since this include at post had resolution 3x bigger (624x468).
Than programmed my old school CITIZEN SRP-75 to calculate distances between those closest 3 triangle black dots, which looked like hexagon vertexes and bingo, it looks like distance between those dots is around: 4.1-4.2 pixels (squared is exactly 17-18, sqrt gives around 4 pixels distance)
So, when we know this it is easy to find in this image another black pixels which do not fit into this hexagon pattern-dead pixels marked them in red there as example?
Update: Another part of this sensor image: marked with yellow pixel with only 28 value, but red was black (0).
Distance between other
"good black" pixels around 4.1-4.2 so normal.
Probably will write software to detect and mark to red those
"dead black pixels " just by passing file name in program argument at command line of course
BTW: Do you know how do they convert this 208x156 image to this 4x times bigger (832x624) shown in a few posts above, eg, those dog and coffe cup thermal shots?