CODEWITHSUNDEEP
algorithmopencvcomputer-vision
alfa_80
alfa_80

Reputation: 427

Algorithms to find difference/similarity in a sequence of images/frames

I am searching for known algorithms (perhaps openCV function) that can output similarity or difference in a given specified number of sequence of images/frames (say 2 or 10).

Journal/conference article is also appreciated. Thank you.

Upvotes: 0

Views: 190

Answers (1)

Jeru Luke
Jeru Luke

Reputation: 21203

You can perform it using Structural Similarity Index

For related publication check out the paper titled Image Quality Assessment: From Error Visibility to Structural Similarity by Zou Wang in IEEE TRANSACTIONS ON IMAGE PROCESSING

There isn't any function available in OpenCV (as far as I can remember), though there si one in scikit_image. It is the ssim module made available by this line from skimage.measure import structural_similarity as ssim.

The good thing about ssim is it considers:

  • the mean of pixel intensities for within a given window.
  • the variance of the pixel intensities
  • and the covariance

The formula given in equation 13 of the linked paper contains the above three.

A sample implementation is provided HERE

Upvotes: 1

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