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DiscrimNet: Semi-Supervised Action Recognition from Videos using Generative Adversarial Networks

2018-01-22 · Unaiza Ahsan, Chen Sun, Irfan Essa

We propose an action recognition framework using Gen- erative Adversarial Networks. Our model involves train- ing a deep convolutional generative adversarial network (DCGAN) using a large video activity dataset without la- bel information. Then we use the trained discriminator from the GAN model as an unsupervised pre-training step and fine-tune the trained discriminator model on a labeled dataset to recognize human activities. We determine good network architectural and hyperparameter settings for us- ing the discriminator from DCGAN as a trained model to learn useful representations for action recognition. Our semi-supervised framework using only appearance infor- mation achieves superior or comparable performance to the current state-of-the-art semi-supervised action recog- nition methods on two challenging video activity datasets: UCF101 and HMDB51.

📄 PDF Abstract BibTeX arXiv:1801.07230

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Tasks

Action RecognitionGenerative Adversarial NetworkTemporal Action LocalizationUnsupervised Pre-training

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