Theses and Dissertations

Date of Award


Document Type


Degree Name

Master of Science (MS)


Computer Science

First Advisor

Dr. Hongkai Yu

Second Advisor

Dr. Jingru Zhang

Third Advisor

Dr. Emmett Tomai


With the wide use of smart phones, distraction has become a major safety concern to roadway users. The distracted phone-use behaviors among pedestrians, like Texting, Game Playing and Phone Calls, have caused increasing fatalities and serious injuries. With the increasing usage of driver monitor systems on intelligent vehicles, distracted driver behaviors can be efficiently detected and warned. However, the research of phone-related distracted behavior by pedestrians has not been systemically studied. It is desired to improve both the driving and pedestrian safety by automatically discovering the phone-related pedestrian distracted behaviors. In this thesis, we propose a new computer vision-based method to detect the phone-related pedestrian distracted behaviors from a view of intelligent and autonomous driving. Specifically, we design the first end-to-end deep learning based Two-Branch Convolutional Neural Network (CNN) for this task. Taking one synchronized image pair by two front on-car GoPro cameras as the inputs, the proposed two-branch CNN will extract features for each camera, fuse the extracted features and perform a robust classification. This method can also be easily extended to video-based classification by confidence accumulation and voting. We propose a new benchmark dataset of 448 synchronized video pairs of 53,760 images collected on a vehicle for this research problem, where the proposed method achieved an overall best classification accuracy of 84.3% on the new benchmark when compared to other methods.


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