Fun with an IR Video Camera

Thursday, October 8th, 2015

What do you do on the day after a Wild Card victory?  You break out the IR camera to see what you can see, that’s what.

The camera is connected to a Raspberry Pi, an inexpensive computer.  It uses several of the input/output pins to either take an image or make a video.  The pictures below show what it looks like when I hold up a piece of paper.

Just me, holding up a piece of paper.  My face is really warm, and my nose is cold.  (So is my office).

Just me, holding up a piece of paper. My face is really warm, and my nose is cold. (So is my office).

 

My warm hand against the paper.  In the visible spectrum, you wouldn't see anything.  In the IR, you pick up the heat.

My warm hand against the paper. In the visible spectrum, you wouldn’t see anything. In the IR, you pick up the heat.

 

Inside, I am a balmy 37C.  When I breath on paper you see it heat up, but in the visible spectrum, this would be totally unremarkable.

Inside, I am a balmy 37C. When I breath on paper you see it heat up, but in the visible spectrum, this would be totally unremarkable.

 

Instructions for this are well documented in a couple other places.

One important thing to note is that you have to find a directory, according to the instructions above.  The directory has been relocated to:

/LeptonModule/software/raspberrypi_libs/leptonSDKEmb32PUB

The above instructions tell you to look for it in

/LeptonModule/software/raspberrypi_video

After you compile the code you need to cd into

/LeptonModule/software/raspberrypi_video

That little change took me an hour to figure out, but I am perpetually new at this.


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