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Action-Recognition

##Action Recognition on KTH Dataset.

  1. We used the STIP Binaries found at [here] (https://www.di.ens.fr/~laptev/download.html#stip) , to extract the STIPs with the HOG-HOF descriptors.
  2. The descriptors extracted are then clustered -using k-means with 3000 cluster- in order to form a visual codebook with 3000 words.
  3. A Bag of words is then constructed for each example (video sequence) based on the occurrences of the codewords in the given example.
  4. The examples (3001-vector-BoW+Label) are then classified using Multi-Class non-Linear SVM.

<img src="/images/pipeline.png" width="400" height"200">

##Papers

  • On Space-Time Interest Points. [Ivan Laptev ,2004] [PDF]
  • Evaluation of local descriptors for action recognition in videos. [Piotr Bilinski and Francois Bremond .2009] [PDF]

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Action Recongition Using STIP and BoW/SVM pipeline

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