Action detection Action localization Convolution Convolutional neural network Convolutional neural networks Deep learning Deep neural networks Detectors Feature extraction Features extraction Interactive computer systems Localisation Online systems Optical flows Real - Time system Real time systems Real-time computations Real-time systems Spatiotemporal phenomena Spatiotemporal phenomenon Three dimensional displays Three-dimensional display Three-dimensional displays Video Video understanding Videos action localization convolutional neural network deep learning real-time computation