Image-based traffic monitoring system.

Lau Wai Hung.Thesis (M.Phil.)--Chinese University of Hong Kong, 2006.Includes bibliographical references (leaves 63-65).Abstracts in English and Chinese.abstract --- p.I摘要 --- p.IIacknowledgement --- p.IIItable of contents --- p.IVlist of figures --- p.VIChapter CHAPTER 1 --- introduction --- p.1Chapter CHAPTER 2 --- literature review --- p.4Chapter 2.1 --- Traffic data collection methods --- p.4Chapter 2.2 --- Vision-based traffic monitoring techniques --- p.6Chapter 2.2.1 --- Vehicle tracking approaches --- p.7Chapter 2.2.2 --- Image processing techniques --- p.10Chapter CHAPTER 3 --- methodology --- p.15Chapter 3.1 --- Solution Concept --- p.16Chapter 3.2 --- System Framework --- p.18Chapter 3.2.1 --- Edge Detection Module --- p.20Chapter 3.2.2 --- Background Update Module --- p.22Chapter 3.2.3 --- Feature Extraction Modules --- p.25Chapter CHAPTER 4 --- experiments and evaluation --- p.41Chapter 4.1 --- Setup and Data Collection --- p.41Chapter 4.2 --- Evaluation Criteria --- p.42Chapter 4.3 --- Experimental Results --- p.44Chapter 4.3.1 --- Comparing overall accuracies --- p.44Chapter 4.3.2 --- Accuracies for different traffic conditions --- p.46Chapter 4.3.3 --- Comparing balanced sampling and random sampling --- p.48Chapter 4.3.4 --- Comparing day and night conditions --- p.50Chapter 4.3.5 --- Testing on time-series of images --- p.52Chapter CHAPTER 5 --- analysis --- p.54Chapter 5.1 --- Strengths and Weaknesses --- p.54Chapter 5.1.1 --- Sobel Edge Histogram --- p.54Chapter 5.1.2 --- Horizontal Line Detection --- p.55Chapter 5.1.3 --- Block Detection --- p.56Chapter 5.1.4 --- Combined Learning --- p.57Chapter 5.1.5 --- Overall Framework --- p.58Chapter 5.2 --- Future Research --- p.59Chapter 5.2.1 --- Static image based monitoring combined with other traffic monitoring approaches --- p.59Chapter 5.2.2 --- Horizontal Line Detection as tracked features of vehicles --- p.60Chapter 5.2.3 --- Application in aerial image-based system --- p.60Chapter CHAPTER 6 --- conclusion --- p.62bibliography --- p.63appendix a sobel edge detection --- p.66appendix b neural network setup --- p.67appendix c numerical results --- p.6