Unsafe Behavior Identification of Mining Truck Drivers Based on Video Sequences
Received date: 2020-12-09
Revised date: 2021-02-19
Online published: 2021-03-22
At present，many mines still rely on human supervision to supervise the unsafe behavior of mining truck drivers，and cannot find problems timely and accurately.This consumes a certain amount of manpower and material resources but cannot solve the problem.With the development of computer technology and artificial intelligence technology，more and more fields are beginning to use artificial intelligence technology to supervise the unsafe behavior of mining truck drivers，such as intelligent security，unmanned driving，and intelligent transportation.Behavior recognition is a hot issue in the field of computer vision.Using computer technology to identify unsafe behaviors is an efficient way to replace manual detection.This paper uses deep learning to solve the unsafe behavior recognition of mining truck drivers in video sequences.The traditional deep learning method does not rely on artificial design features，but adaptively learns better high-dimensional features，better robustness，and faster speed，the accuracy rate is higher.Firstly，according to the actual obtained video data，by analyzing the relative position relationship between the camera and the driver’s area，the video is clipped to obtain video data with less redundant information.At the same time，in order to reduce the imbalance of the data samples，by using flipping，methods such as panning and adding noise were used to enhance the data set，and then use Opencv to re-convert the enhanced image data into a video file and use the dense_flow method to obtain an optical flow diagram.Secondly，use the network for training and testing.In order to conduct com-parative experiments，firstly，a traditional classification model that does not consider time sequence information was used for training and testing，and the transfer learning method was used to train Resnet，Xception，and Inception.And fusion of three single models to get a new fusion model.At the same time，the time domain and spatial domain channels of the dual-stream network model are set to the pre-trained VGG16 using migration learning under the consideration of timing information，and the comparison experiment was carried out with the C3D-two-stream proposed in this paper.The experimental results show that the improved Vgg-two-stream model can reach an accuracy rate of 89.539%，and the accuracy rate of the C3D-two-stream model can reach 93.445%.In summary，the C3D-two-stream model proposed in this paper has a high recognition rate.It also proves that for behavior recognition，the acquisition of characteristic information in the time dimension can make the recognition results more accurate，which has important practical significance for the recognition of unsafe behaviors of mining truck drivers.
Lin BI , Chao ZHOU , Xin YAO . Unsafe Behavior Identification of Mining Truck Drivers Based on Video Sequences[J]. Gold Science and Technology, 2021 , 29(1) : 14 -24 . DOI: 10.11872/j.issn.1005-2518.2021.01.216
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