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pytorch-i3d

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Created 2018-03-26 · Updated 2026-10-16 · #18970 today
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piergiaj/pytorch-i3d is ranked 18,970 with 1,054 stars.

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piergiaj/pytorch-i3d is ranked 18,970 among these 8 peers; damo-cv/TransReID is ranked 18,969.

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Key parameters and specifications
Key parameters and specifications
ParameterValue
LanguagePython
CategoryModels
SubcategoryVision models
Keywords3D
Stars1,054
Forks258
Contributors1
Created date2018-03-26
Updated date2026-10-16
Stars in 1 day-1
Stars in 7 days-2
Rank18,970
Previous rank11,776
Rank change-7,194
7-day stars rank18,375
Previous 7-day stars rank17,330
7-day stars rank change-1,045
Total stars rank10,727
Previous total stars rank10,702
Total stars rank change-25
CountryUSA
README summary

I3D models trained on Kinetics Overview This repository contains trained models reported in the paper "Quo Vadis, Action Recognition? A New Model and the Kinetics Dataset" by Joao Carreira and Andrew Zisserman. This code is based on Deepmind's Kinetics-I3D. Including PyTorch versions of their models. Note This code was written for PyTorch 0. Fine-tuning and Feature Extraction We provide code to extract I3D features and fine-tune I3D for charades. Our fine-tuned models on charades are also

available in the models director (in addition to Deepmind's trained models). The deepmind pre-trained models were converted to PyTorch and give identical results (flow_imagenet. These models were pretrained on imagenet and kinetics (see Kinetics-I3D for details). py contains the code to fine-tune I3D based on the details in the paper and obtained from the authors. Specifically, this version follows the settings to fine-tune on the Charades dataset based on the author's implementation that won the

Charades 2017 challenge. Our fine-tuned RGB and Flow I3D models are available in the model directory (rgb_charades. This relied on having the optical flow and RGB frames extracted and saved as images on dist. py contains our code to load video segments for training. py contains the code to load a pre-trained I3D model and extract the features and save the features as numpy arrays. py script loads an entire video to extract per-segment features.

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piergiaj/pytorch-i3d has 1,054 stars and 258 forks.

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piergiaj/pytorch-i3d is ranked 18,970.

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piergiaj/pytorch-i3d has 1,054 stars, uses Python and belongs to Models.

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piergiaj/pytorch-i3d is compared with damo-cv/TransReID, ranked 18,969 with 1,055 stars.

README

I3D models trained on Kinetics

Overview

This repository contains trained models reported in the paper "Quo Vadis, Action Recognition? A New Model and the Kinetics Dataset" by Joao Carreira and Andrew Zisserman.

This code is based on Deepmind's Kinetics-I3D. Including PyTorch versions of their models.

Note

This code was written for PyTorch 0.3. Version 0.4 and newer may cause issues.

Fine-tuning and Feature Extraction

We provide code to extract I3D features and fine-tune I3D for charades. Our fine-tuned models on charades are also available in the models director (in addition to Deepmind's trained models). The deepmind pre-trained models were converted to PyTorch and give identical results (flow_imagenet.pt and rgb_imagenet.pt). These models were pretrained on imagenet and kinetics (see Kinetics-I3D for details).

Fine-tuning I3D

train_i3d.py contains the code to fine-tune I3D based on the details in the paper and obtained from the authors. Specifically, this version follows the settings to fine-tune on the Charades dataset based on the author's implementation that won the Charades 2017 challenge. Our fine-tuned RGB and Flow I3D models are available in the model directory (rgb_charades.pt and flow_charades.pt).

This relied on having the optical flow and RGB frames extracted and saved as images on dist. charades_dataset.py contains our code to load video segments for training.

Feature Extraction

extract_features.py contains the code to load a pre-trained I3D model and extract the features and save the features as numpy arrays. The charades_dataset_full.py script loads an entire video to extract per-segment features.

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