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groupgets / LeptonModule

Code for getting started with the FLIR Lepton breakout board
https://groupgets.com/manufacturers/flir/products/flir-lepton
BSD 2-Clause "Simplified" License
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Changing Colour Palette for raspberrypi_capture #46

Open G0ne-Phishing opened 7 years ago

G0ne-Phishing commented 7 years ago

Is there a way to change the colour palette for the output images from the raspberrypi_capture function?

By default the images are greyscale but I would prefer the images to be rainbow palette or ironblack.

Cheers.

tmsd2001 commented 6 years ago

I think that it is possible. My question is, has someone finished that? Or must I reinvent the wheel. An Example, i have a pgm pic with min 7804 and max 8305, so the pgm has 501 gray values. Form a Rainbow you have this RGB First step 000 000 255 then 000 255 255 = 255 Steps next 000 255 000 = 255 Steps next 255 255 000 = 255 Steps end 255 000 000 = 255 Steps Sum = 1020 Steps Convert the 501 Values to 1020, with faktor 2,035928144. Have your pixel a Value 143 * 2,035928144 = 291,1 = round 291. So RGB ist is 000 255 219 Now you can write a ppm File.

tmsd2001 commented 6 years ago

A other way is use an extern command, i test the convert command from imagemagick. A tutorial can be found here http://www.imagemagick.org/discourse-server/viewtopic.php?t=27377