Traffic scene recognition based on deep cnn and vlad spatial pyramids
This work addresses traffic scene recognition for Intelligent Transportation Systems, but it is incremental as it combines existing methods (CNN and VLAD) without introducing a new paradigm.
The paper tackled traffic scene recognition by combining CNN features with VLAD encoding and spatial pyramids, achieving satisfactory categorization performance on a dataset of 10 traffic scene categories.
Traffic scene recognition is an important and challenging issue in Intelligent Transportation Systems (ITS). Recently, Convolutional Neural Network (CNN) models have achieved great success in many applications, including scene classification. The remarkable representational learning capability of CNN remains to be further explored for solving real-world problems. Vector of Locally Aggregated Descriptors (VLAD) encoding has also proved to be a powerful method in catching global contextual information. In this paper, we attempted to solve the traffic scene recognition problem by combining the features representational capabilities of CNN with the VLAD encoding scheme. More specifically, the CNN features of image patches generated by a region proposal algorithm are encoded by applying VLAD, which subsequently represent an image in a compact representation. To catch the spatial information, spatial pyramids are exploited to encode CNN features. We experimented with a dataset of 10 categories of traffic scenes, with satisfactory categorization performances.