Mr. Vladimir Molchanov Profile

Vladimir Molchanov

at FGUP GosNIIAS

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Proceedings Article | 26 June 2017 Paper

Pedestrian detection in video surveillance using fully convolutional YOLO neural network

V. Molchanov, B. Vishnyakov, Y. Vizilter, O. Vishnyakova, V. Knyaz

Proceedings Volume 10334, 103340Q (2017) https://doi.org/10.1117/12.2270326

KEYWORDS: Video surveillance, Neural networks, Image processing, Object recognition, Detection and tracking algorithms, Systems modeling, Image fusion, Convolution, Video, Surveillance systems, Network architectures, Data modeling, Transform theory, Neurons, Modeling

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More than 80% of video surveillance systems are used for monitoring people. Old human detection algorithms, based on background and foreground modelling, could not even deal with a group of people, to say nothing of a crowd. Recent robust and highly effective pedestrian detection algorithms are a new milestone of video surveillance systems. Based on modern approaches in deep learning, these algorithms produce very discriminative features that can be used for getting robust inference in real visual scenes. They deal with such tasks as distinguishing different persons in a group, overcome problem with sufficient enclosures of human bodies by the foreground, detect various poses of people. In our work we use a new approach which enables to combine detection and classification tasks into one challenge using convolution neural networks. As a start point we choose YOLO CNN, whose authors propose a very efficient way of combining mentioned above tasks by learning a single neural network. This approach showed competitive results with state-of-the-art models such as FAST R-CNN, significantly overcoming them in speed, which allows us to apply it in real time video surveillance and other video monitoring systems. Despite all advantages it suffers from some known drawbacks, related to the fully-connected layers that obstruct applying the CNN to images with different resolution. Also it limits the ability to distinguish small close human figures in groups which is crucial for our tasks since we work with rather low quality images which often include dense small groups of people. In this work we gradually change network architecture to overcome mentioned above problems, train it on a complex pedestrian dataset and finally get the CNN detecting small pedestrians in real scenes.

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