How do I get the temperatures from a thermal image taken with a FLIR ONE camera?

I have purchased a FLIR ONE camera and I've taken an image with it. I wanted to know how to get the highest temperature in the image using image processing on MATLAB.

Answer 1

[Image Analyst]

See attached demo.

[Gautam Pradhan]

Hi,

Thant was a wonderful code. I am pretty new to MATLAB. I tried to save the image files generated by your code to my hard drive, but it is giving me complete white image only. I used following code;

ShortFileName = 'C:\123thermal_image.png';

imwrite(thermalImage, ShortFileName);

The thermalImage means "Floating Point Thermal (Temperature) Image.

Thank you.

GoPrad

[Image Analyst]

Gautam, please attach the PNG image with the paper clip icon. I'm not sure how you saved those two white images you attached so give me the original images from the FLIR one.

And Heba, I never heard back from you. Did my demo help you? Please "Accept this answer" if it did.

Answer 2

[Gautam Pradhan]

Hi,

Ok, the original file is "thermal_image.png": this is the demo image file you supplied.

The image I wanted to save in my hard drive is a "Floating Point Thermal (Temperature) Image, which was generated when I used your codes.

I included two more codes to save that:

ShortFileName = 'C:\123thermal_image.png'; 
imwrite(thermalImage, ShortFileName);

But I got a saved file which is white only. This is attached as 12345thermal_image.png.

If it worked, I actually wanted to use your code on my original FLIR jpeg image which is: OriginalThermalFLIRImage.jpg.

Thank you so much.

Gautam

[Image Analyst]

This won't work:

ShortFileName = 'C:\123thermal_image.png';
imwrite(thermalImage, ShortFileName);

thermalImage is a floating point image, not an integer image so you have to save it in a .mat file

fullFileName = 'C:\123thermal_image.mat'; 
save(fullFileName, 'thermalImage');

Then, to recall:

s = load(fullFileName);
thermalImage = s.thermalImage;

Answer 3

[Gautam Pradhan]

Hi,

Thank you!

I could successfully save the image as 123thermal_image.mat and recalled it. However, I have two questions:

1. The recalled data did not have 31.6 value; which is the max temperature.

1. Is it possible to create an image from this 123thermal_image.mat file?

Gautam

[Image Analyst]

It should work but I don't know what you did to make it not work.

Attach your original image and your source code in a new thread, rather than Heba's year old thread.