Thermal image processing .. Hotspot Detection

Hello! I want the code for finding the maximum temperature area(greater than the threshold value) show in image .. Threshold value is in temperature.. and also detect the hotspot.. I have attached the 2 files please take example for those images.. Thank you

[KALYAN ACHARJYA]

On which image? Exact position or region?

[Monika Sahu]

U take example of RGB Image for the code.. and extract the position of hotspot..