Thermal Image background substraction

Please anyone tell me the code for the thermal image background substraction for my work.

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Answer 1

[KALYAN ACHARJYA]

You can do that, by considering gray range with more than specific (blob size) pixels continuity.

[Arpit Kesarwani]

actually i am just a new to this...so i need the full code to implement this.

If possible please provide me the code