Comparing and matching random portion of a two images autonomously

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Joy Agrawal
Joy Agrawal 2021-2-24
编辑： KALYAN ACHARJYA 2021-2-24
Hi community,
I am working on a project and I need to compare two photographs of same thing at different points of time, position of objects won't change but the frame might change, I want to compare and match certain portion of one image to the other autonomously.... How can I do that
Note: The birghtness value of certain pixels may vary

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KALYAN ACHARJYA
KALYAN ACHARJYA 2021-2-24
编辑：KALYAN ACHARJYA 2021-2-24
"need to compare two photographs of same thing at different points of time,position of objects won't change but the frame might change, I want to compare and match certain portion of one image to the other autonomously"
It may helps (any One):
  1. Subtraction (Back ground Elimination)
  2. Structural Similarity Index (SSIM)
  3. Histogram Comparision

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