Extraction of absolute temperatures/relative temperatures from thermal images

I am working on a project i need to extract absolute temperature/relative temperatures from my thermal images which i took using FLIR Vue Pro R camera.I have run them through PIX4D and the output values are being given out as original pixel value and want them in degrees Celsius.

 

Thank you

Hi Thapelo,

Could you have a look here and let me know if it related? 

https://community.pix4d.com/t/6265-Having-trouble-with-Flir-Vue-Pro-R-and-temperature-calculation 

Cheers,

Ina