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Video comparison Python project

  • Python

Python project developed to detect if videos are the same or different.

PCV -illustration.png

The algorithm we implemented can be described as follows:

  • ⁠Preprocessing (all information about the videos is extracted, aspect ratio, resolution and fps are taken into account for detailing further analysis);
  • Video frame generators are created based on derived parameters;
  • To each pair of frames the background subtraction is applied sequentially (clahe for further stabilization effect + bg sub);
  • The result of bg sub is followed with some morphological operations to eliminate small noise and improve strong regions of difference;
  • Then we search for rectangular regions of difference on resulting mask and apply SSIM check (and, if SSIM indicates difference indeed - additional SIFT check) to each region;
  • Once a number of different pairs reach the preset threshold of all frames or a big portion of consequent frames is different (running window approach), videos are labeled as different. If the threshold is not reached until the end, videos are considered equal.

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Development time
4 weeks of 1 developer