more Raspberry Pi 4 FLIR test...

J

Jan Panteltje

Guest
More Raspberry Pi 4 FLIR test

experimented a bit more with that pimoroni
https://shop.pimoroni.com/products/mlx90640-thermal-camera-breakout?variant=12536948654163
FLIR module and wrote a GUI
that draws temperature related colors and also shows temperature per \'pixel\' (24 x 32).

http://panteltje.com/pub/flir_test_candle_top_left__raspi4_close_bottom_IXIMG_0789.JPG
this is with the pimoroni MLX90640 FLIR module,
using input from their demo code

/root/compile/pantel/mlx90640_FLIR/pimoroni/mlx90640-library-master/examples/step | ./flir_test 0 20 40 0 0 300 1 20 30
the argument numbers allow you to select color range and colors.

# ./flir_test
Usage:
flir_test red_mode red_start red_end green_mode green_start green_end blue_mode blue_start blue_end
mode 0 is normal, warmest most color
mode 1 is inverse, coldest most color
use all integers
Example:
/root/compile/pantel/mlx90640_FLIR/pimoroni/mlx90640-library-master/examples/step | flir_test 0 20 40 0 0 300 1 20 30

work in progress,

Impressive how much power the Pi4 has, code quite a bit of maaaz per frame
and all that in codesize less than 29 kB:
-rwxr-xr-x 1 root root 28536 Feb 4 10:59 flir_test
Have not used a peesee in ages, last time was to align my satellite dish when I moved here.


Anyways, this is nice too:
https://www.ebay.com/itm/393431412214?hash=item5b9a56edf6:g:uOgAAOSwN5Zg5-z

sort of a target, more maaaz.

Ask for the code here but probably better ones exist.
 
On 04/02/2022 10:34, Jan Panteltje wrote:
> More Raspberry Pi 4 FLIR test

<snip>
Anyways, this is nice too:
https://www.ebay.com/itm/393431412214?hash=item5b9a56edf6:g:uOgAAOSwN5Zg5-z
Click to expand...

Certainly an impressive display for a 24 x 32 sensor :)

--
Cheers
Clive
 
On a sunny day (Fri, 4 Feb 2022 11:28:31 +0000) it happened Clive Arthur
<clive@nowaytoday.co.uk> wrote in <stj2l0$69r$1@dont-email.me>:

On 04/02/2022 10:34, Jan Panteltje wrote:
More Raspberry Pi 4 FLIR test

snip

Anyways, this is nice too:
https://www.ebay.com/itm/393431412214?hash=item5b9a56edf6:g:uOgAAOSwN5Zg5-z


Certainly an impressive display for a 24 x 32 sensor :)
Click to expand...

I think what they do is using a normal camera together with the FLIR sensor.
I like the averaging between pixels, very smooth.
I did see that averaging code somewhere, wikipedia?

If you put the normal camera and FLIR sensor on the same PCB next to each other
and if those have the same viewing angle (depends on the lens of the normal camera)
then this should be no problem, just superimpose.
 
It is the \'blur\' funcion (using \'xv\' viewer, is open source):

http://panteltje.com/pub/xv_algo_blur_51_image.gif

now use this as color for a normal BW camera looking at the same area.

But the \'blur\' algorithm takes many seconds to complete for a frame like this.....

Challenge for mathematicians :)
 
Solved,
blur runs like a flash in no time if I do the color processing for a 4x3 pixel box
and then later enlarge (xv used 3 x double size here),
just a bit more noisy:
http://panteltje.com/pub/blur_7_4x3_image.gif
 
Jan Panteltje <pNaonStpealmtje@yahoo.com> wrote in
news:stivij$6f1$1@dont-email.me:

More Raspberry Pi 4 FLIR test

FLIR is a brand name not a device type, you stupid twerp.
Click to expand...

And the actual FLIR product is an order of magnitude higher
resolution, better rendered, and easily offloaded for examination after
the fact.

Even their cheap stuff is better and only a few bucks more.

<https://www.amazon.com/FLIR-One-Thermal-Imager-For/dp/B0728C7KND>
 
fredag den 4. februar 2022 kl. 21.03.56 UTC+1 skrev DecadentLinux...@decadence.org:
Jan Panteltje <pNaonSt...@yahoo.com> wrote in
news:stivij$6f1$1...@dont-email.me:
More Raspberry Pi 4 FLIR test

FLIR is a brand name not a device type, you stupid twerp.
Click to expand...

https://en.wikipedia.org/wiki/Forward-looking_infrared
 
Lasse Langwadt Christensen <langwadt@fonz.dk> wrote in
news:17f13637-0d2f-42f5-ba65-49a37b3778cbn@googlegroups.com:

fredag den 4. februar 2022 kl. 21.03.56 UTC+1 skrev
DecadentLinux...@decadence.org:
Jan Panteltje <pNaonSt...@yahoo.com> wrote in
news:stivij$6f1$1...@dont-email.me:
More Raspberry Pi 4 FLIR test

FLIR is a brand name not a device type, you stupid twerp.


https://en.wikipedia.org/wiki/Forward-looking_infrared
Click to expand...

A military device system. NOT some punks camere eye.

Nope, not ever.
 
always wrong again https://en.wikipedia.org/wiki/Teledyne_FLIR
 
Nomen Nescio <nobody@dizum.com> wrote in
news:20220204223651.L7gmF0JsNL2Y@sewer.dizum.com:

> https://en.wikipedia.org/wiki/Teledyne_FLIR

Again, PUTZ. As I already stated.

It is a BRAND NAME. Not a device name.

And a military system, AN ENTIRE SYSTEM, not your run o tha mill IR
sensor from some twerp\'s box of cracker jacks.

And nomen is a fucking troll for the last three decades. That
fucktard has invaded newsgroups with his retarded horseshit for years.
So you have nil grasp of the entire thing to start with.

Oh boy, you can run out and google. And you still got it wrong,
dumbshit.
 
On 2/5/2022 10:12 AM, DecadentLinuxUserNumeroUno@decadence.org wrote:
Nomen Nescio <nobody@dizum.com> wrote in
news:20220204223651.L7gmF0JsNL2Y@sewer.dizum.com:

https://en.wikipedia.org/wiki/Teledyne_FLIR

Again, PUTZ. As I already stated.

It is a BRAND NAME. Not a device name.
Click to expand...

So was/is Xerox.
 
John S <Sophi.2@invalid.org> wrote in news:stppo2$n4v$1@dont-email.me:

On 2/5/2022 10:12 AM, DecadentLinuxUserNumeroUno@decadence.org wrote:
Nomen Nescio <nobody@dizum.com> wrote in
news:20220204223651.L7gmF0JsNL2Y@sewer.dizum.com:

https://en.wikipedia.org/wiki/Teledyne_FLIR

Again, PUTZ. As I already stated.

It is a BRAND NAME. Not a device name.

So was/is Xerox.
Click to expand...

But you go out and buy a copier NOT a XEROX machine. And IF you do
buy a XEROX machine, it usually IS a Xerox brand machine.

It is an IR camera, NOT a \"Forward Looking Infra Red\" missile launch
threat recognition system. It is not even a FLIR device.

At best it is \"An IR Imager\" because even that \"transducer\" has to be
processed and displayed by yet more circuitry.

They are tissues, NOT \"Kleenexes\"
 
xflir-0.2 released
Complete rewrite of xflir
now stand alone code, also compiles on other Linux systems with gcc.
http://panteltje.com/panteltje/newsflex/download.html#xflir

Tested on Raspberry Pi4
 
On a sunny day (Fri, 04 Feb 2022 10:34:09 GMT) it happened Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote in <stivij$6f1$1@dont-email.me>:

>More Raspberry Pi 4 FLIR

I added some more code, and now you can specify a window in the FLIR
output screen where to look for temperatures > or < some limit.
and that will call a script named \'flir_alarm_script\' that you can then write to do anything in case of alarm.
Also added yuv output to stdout that you can read with mplayer
or convert on the fly to any video format with ffmpeg.
New color scheme, and an optional color range bar on the left.

New name: xflir
http://panteltje.com/pub/xflir-0.1.tgz

More command line options come to mind.

It is still based on input required from the
pimoroni/mlx90640-library-master/examples/step
program.

# xflir -h
Usage:
mlx90640-library-master/examples/step | xflir [options]
options are:
-a show temperature in each pixel, default off
-b int brightness in percent range 0-100, default 100
-e string alarm_script, will be executed upon alarm condition
-f float start_temperature, default 20.0
-h help, this help
-j int detection_window_x_start, default 0
-k int detection_window_x_end, default 23
-l int detection_window_y_start,default 0
-m int detection_window_y_end, default 31
-n detection level negative going, so alarm if temperature drops below setpoint set with -o, default positive
-o float detection_window_threshold, default 30.0
-p set alarm active flag, default off
-s int saturation in percent range 0-100 default 100
-t float end_temperature, default 45.0
-v int verbose level, default off
-x show temperature bar with temperatures on the left, default off
-y yuv format output to stdout
-z temperature text foreground white
Examples:
show colors between 20 and 40 degrees C
xflir -f 20 -t 40
show temperature from 20 C to 33 C in each pixel
mlx90640-library-master/examples/step | xflir -f 20.0 -t 33.0 -a
alarm detection on alarm windows specified and yuv format output to file
mlx90640-library-master/examples/step | xflir -f 20.0 -t 33.0 -j 10 -k 20 -l 20 -m 31 -o 29.0 -e flir_alarm_script -x -y -p 1>file.yuv
mlx90640-library-master/examples/step | xflir -f 20.0 -t 33.0 -j 10 -k 20 -l 20 -m 31 -x -y | ffmpeg -i - -vcodec libx264 -y file.avi

By now should make a decent link on the website...,
thing is still less than 25 kByte in size
Raspberry P4 only, will not compile on X86 without changes.
My code is GPL licensed

Example of flir_alarm_script:
#!/bin/bash
echo \"FLIR ALARM\"
aplay -D hw:1,0 warn.wav
mpg123 -a hw:1,0 far_infrared_alarm.mp3
echo \"FLIR ALARM\" | netcat -q 0 192.168.178.69 1112
exit 0


Note the use of \'netcat\', the soluion to all networking ;-)

On the receiving site, (any where in the world) run:
while [ 1 ] ; do netcat -l -p 1112 ; sleep 1 ; done
Of course that can be a script doing anything too.

Now next is to mount it on the space laser and look for F35s
https://www.youtube.com/watch?v=xS_K4caj7vc
 
Picture using alarm window:
http://panteltje.com/pub/xflir-0.1.gif
 
Jan Panteltje <pNaonStpealmtje@yahoo.com> wrote in news:su0gmc$c12$1
@dont-email.me:

> I added some more code, and now you can specify a window in the FLIR

It is NOT a FLIR, it is an IR.
 
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