Beyond Still Images: Robust Multi-Stream Spatiotemporal Networks

A defining characteristic of natural vision is its ability to withstand a variety of input alterations, resulting in the creation of an invariant representation of the surroundings. While convolutional neural networks exhibit resilience to certain forms of spatial input variation, modifications in the spatial and temporal aspects can significantly affect the representations of video content in deep neural networks. Inspired by the resilience of natural vision to input variations, we employ a simple multi-stream model to explore its potential to address spatiotemporal changes by including temporal features. Our primary goal is to introduce a video-trained model and evaluate its robustness to diverse image and video inputs, with a particular focus on exploring the role of temporal features in invariant recognition. Results show that including videos and the temporal stream during training mitigates the decline in accuracy and mAP in image and video understanding tasks by 1.36% and 3.14%, respectively.