감시 카메라 영상의 비조화비를 이용한 차량 사고 분석

다국어 초록 (Multilingual Abstract)

Vehicle speed estimation is the most important task in car accident reconstruction and intelligent transportation system design. Recent studies have been conducted in order to evaluate the speed of a vehicle by using the images of various surveillance cameras. However, the limitation is that it is necessary to know whether the calibration coefficient of the camera or only the average speed analysis of a specific interval is possible. In this study, we propose a novel technique for estimating vehicle speed by using a vehicle or structure already recognized as geometric information from the uncalibrated surveillance camera. The digital image processing technique tracks the specific coordinates information in all video frames and calculates the velocity change according to the video frame rate by using a cross ratio, which is the perspective invariant. The results of this method are verified through simulation and actual car evaluation. As a result, it is confirmed that it is possible to accurately analyze the change in the moving speed of a vehicle in different conditions.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 차량 속도계산
• 3. 비조화비 속도분석의 검증
• 4. 결론
• References

참고문헌 (Reference)

1 한인환, "차량-보행자 충돌사고 재구성 해석: 차량 속도 계산과 불확실성" 한국자동차공학회 19 (19): 82-91, 2011

2 오원택, "저속 추돌 시 반발계수에 관한 연구" 한국자동차공학회 25 (25): 600-606, 2017

3 이승종, "스키드마크 및 요마크를 이용한 차량사고재구성" 한국정밀공학회 20 (20): 2003

4 최지훈, "머리모형 충돌에 의한 자동차 접합유리의 실험적 연구 및 유한요소해석" 한국자동차공학회 25 (25): 374-379, 2017

5 J. Lan, "Vehicle Speed Measurement Based on Gray Constraint Optical Flow Algorithm" 125 (125): 289-295, 2014

6 J. Kim, "Reliability Verification of Vehicle Speed Estimate Method in Forensic Videos" 287 : 195-206, 2018

7 김지혜, "Optical Flow 기반 CCTV 영상에서의 차량 통행량 및 통행 속도 추정에 관한 연구" 한국방송∙미디어공학회 22 (22): 448-461, 2017

8 M. Dubska, "Fully Automatic Roadside Camera Calibration for Traffic Surveillance" 16 (16): 1162-1171, 2015

9 I. Han, "Car Speed Estimation Based on Cross-ratio Using Video Data of Car-mounted Camera(Black box)" 269 : 89-96, 2016

10 G. S. Fung, "Camera Calibration from Road Lane Markings" 42 (42): 2003

11 M. Dubska, "Automatic Camera Calibration for Traffic Understanding" 4 (4): 2014

12 R. Bhardwaj, "AutoCalib: Automatic Traffic Camera Calibration at Scale" 14 (14): 2018

13 T. W. Wong, "Application of Cross-ratio in Traffic Accident Reconstruction" 235 : 19-23, 2014

14 D. J. Dailey, "An Algorithm to Estimate Mean Traffic Speed Using Uncalibrated Cameras" 1 (1): 98-107, 2000

15 F. W. Cathey, "A Novel Technique to Dynamically Measure Vehicle Speed Using Uncalibrated Roadway Cameras" 777-782, 2005

16 B. Lee, "A Novel Approach to Camera Calibration Method for Smart Phones Under Road Environment" XLI-B5 : 49-54, 2016