computer vision based accident detection in traffic surveillance githubcelebrities who live in east london

Computer vision-based accident detection through video surveillance has become a beneficial but daunting task. This is done for both the axes. We then normalize this vector by using scalar division of the obtained vector by its magnitude. Section IV contains the analysis of our experimental results. As a result, numerous approaches have been proposed and developed to solve this problem. In the area of computer vision, deep neural networks (DNNs) have been used to analyse visual events by learning the spatio-temporal features from training samples. This is the key principle for detecting an accident. Activity recognition in unmanned aerial vehicle (UAV) surveillance is addressed in various computer vision applications such as image retrieval, pose estimation, object detection, object detection in videos, object detection in still images, object detection in video frames, face recognition, and video action recognition. In order to efficiently solve the data association problem despite challenging scenarios, such as occlusion, false positive or false negative results from the object detection, overlapping objects, and shape changes, we design a dissimilarity cost function that employs a number of heuristic cues, including appearance, size, intersection over union (IOU), and position. A Vision-Based Video Crash Detection Framework for Mixed Traffic Flow Environment Considering Low-Visibility Condition In this paper, a vision-based crash detection framework was proposed to quickly detect various crash types in mixed traffic flow environment, considering low-visibility conditions. Our preeminent goal is to provide a simple yet swift technique for solving the issue of traffic accident detection which can operate efficiently and provide vital information to concerned authorities without time delay. Computer vision-based accident detection through video surveillance has become a beneficial but daunting task. Figure 4 shows sample accident detection results by our framework given videos containing vehicle-to-vehicle (V2V) side-impact collisions. The inter-frame displacement of each detected object is estimated by a linear velocity model. The index i[N]=1,2,,N denotes the objects detected at the previous frame and the index j[M]=1,2,,M represents the new objects detected at the current frame. The proposed framework provides a robust consists of three hierarchical steps, including efficient and accurate object Nowadays many urban intersections are equipped with surveillance cameras connected to traffic management systems. Based on this angle for each of the vehicles in question, we determine the Change in Angle Anomaly () based on a pre-defined set of conditions. Road accidents are a significant problem for the whole world. In this paper, a new framework to detect vehicular collisions is proposed. of the proposed framework is evaluated using video sequences collected from We find the change in accelerations of the individual vehicles by taking the difference of the maximum acceleration and average acceleration during overlapping condition (C1). Let's first import the required libraries and the modules. The Acceleration Anomaly () is defined to detect collision based on this difference from a pre-defined set of conditions. We then determine the Gross Speed (Sg) from centroid difference taken over the Interval of five frames using Eq. Additionally, the Kalman filter approach [13]. Due to the lack of a publicly available benchmark for traffic accidents at urban intersections, we collected 29 short videos from YouTube that contain 24 vehicle-to-vehicle (V2V), 2 vehicle-to-bicycle (V2B), and 3 vehicle-to-pedestrian (V2P) trajectory conflict cases. The condition stated above checks to see if the centers of the two bounding boxes of A and B are close enough that they will intersect. While performance seems to be improving on benchmark datasets, many real-world challenges are yet to be adequately considered in research. to use Codespaces. Kalman filter coupled with the Hungarian algorithm for association, and For instance, when two vehicles are intermitted at a traffic light, or the elementary scenario in which automobiles move by one another in a highway. A sample of the dataset is illustrated in Figure 3. This framework capitalizes on Mask R-CNN for accurate object detection followed by an efficient centroid based object tracking algorithm for surveillance footage to achieve a high Detection Rate and a low False Alarm Rate on general road-traffic CCTV surveillance footage. Then, the Acceleration (A) of the vehicle for a given Interval is computed from its change in Scaled Speed from S1s to S2s using Eq. of International Conference on Systems, Signals and Image Processing (IWSSIP), A traffic accident recording and reporting model at intersections, in IEEE Transactions on Intelligent Transportation Systems, T. Lin, M. Maire, S. J. Belongie, L. D. Bourdev, R. B. Girshick, J. Hays, P. Perona, D. Ramanan, P. Dollr, and C. L. Zitnick, Microsoft COCO: common objects in context, J. C. Nascimento, A. J. Abrantes, and J. S. Marques, An algorithm for centroid-based tracking of moving objects, Proc. Current traffic management technologies heavily rely on human perception of the footage that was captured. Sun, Robust road region extraction in video under various illumination and weather conditions, 2020 IEEE 4th International Conference on Image Processing, Applications and Systems (IPAS), A new adaptive bidirectional region-of-interest detection method for intelligent traffic video analysis, A real time accident detection framework for traffic video analysis, Machine Learning and Data Mining in Pattern Recognition, MLDM, Automatic road detection in traffic videos, 2020 IEEE Intl Conf on Parallel & Distributed Processing with Applications, Big Data & Cloud Computing, Sustainable Computing & Communications, Social Computing & Networking (ISPA/BDCloud/SocialCom/SustainCom), A new online approach for moving cast shadow suppression in traffic videos, 2021 IEEE International Intelligent Transportation Systems Conference (ITSC), E. P. Ijjina, D. Chand, S. Gupta, and K. Goutham, Computer vision-based accident detection in traffic surveillance, 2019 10th International Conference on Computing, Communication and Networking Technologies (ICCCNT), A new approach to linear filtering and prediction problems, A traffic accident recording and reporting model at intersections, IEEE Transactions on Intelligent Transportation Systems, The hungarian method for the assignment problem, T. Lin, M. Maire, S. Belongie, J. Hays, P. Perona, D. Ramanan, P. Dollr, and C. L. Zitnick, Microsoft coco: common objects in context, G. Liu, H. Shi, A. Kiani, A. Khreishah, J. Lee, N. Ansari, C. Liu, and M. M. Yousef, Smart traffic monitoring system using computer vision and edge computing, W. Luo, J. Xing, A. Milan, X. Zhang, W. Liu, and T. Kim, Multiple object tracking: a literature review, NVIDIA ai city challenge data and evaluation, Deep learning based detection and localization of road accidents from traffic surveillance videos, J. Redmon, S. Divvala, R. Girshick, and A. Farhadi, You only look once: unified, real-time object detection, Proceedings of the IEEE conference on computer vision and pattern recognition, Anomalous driving detection for traffic surveillance video analysis, 2021 IEEE International Conference on Imaging Systems and Techniques (IST), H. Shi, H. Ghahremannezhadand, and C. Liu, A statistical modeling method for road recognition in traffic video analytics, 2020 11th IEEE International Conference on Cognitive Infocommunications (CogInfoCom), A new foreground segmentation method for video analysis in different color spaces, 24th International Conference on Pattern Recognition, Z. Tang, G. Wang, H. Xiao, A. Zheng, and J. Hwang, Single-camera and inter-camera vehicle tracking and 3d speed estimation based on fusion of visual and semantic features, Proceedings of the IEEE conference on computer vision and pattern recognition workshops, A vision-based video crash detection framework for mixed traffic flow environment considering low-visibility condition, L. Yue, M. Abdel-Aty, Y. Wu, O. Zheng, and J. Yuan, In-depth approach for identifying crash causation patterns and its implications for pedestrian crash prevention, Computer Vision-based Accident Detection in Traffic Surveillance, Artificial Intelligence Enabled Traffic Monitoring System, Incident Detection on Junctions Using Image Processing, Automatic vehicle trajectory data reconstruction at scale, Real-time Pedestrian Surveillance with Top View Cumulative Grids, Asynchronous Trajectory Matching-Based Multimodal Maritime Data Fusion Stay informed on the latest trending ML papers with code, research developments, libraries, methods, and datasets. conditions such as broad daylight, low visibility, rain, hail, and snow using They do not perform well in establishing standards for accident detection as they require specific forms of input and thereby cannot be implemented for a general scenario. Next, we normalize the speed of the vehicle irrespective of its distance from the camera using Eq. This framework was found effective and paves the way to the development of general-purpose vehicular accident detection algorithms in real-time. Consider a, b to be the bounding boxes of two vehicles A and B. Register new objects in the field of view by assigning a new unique ID and storing its centroid coordinates in a dictionary. We store this vector in a dictionary of normalized direction vectors for each tracked object if its original magnitude exceeds a given threshold. This approach may effectively determine car accidents in intersections with normal traffic flow and good lighting conditions. Since we are focusing on a particular region of interest around the detected, masked vehicles, we could localize the accident events. Additionally, we plan to aid the human operators in reviewing past surveillance footages and identifying accidents by being able to recognize vehicular accidents with the help of our approach. This framework was evaluated on diverse The robust tracking method accounts for challenging situations, such as occlusion, overlapping objects, and shape changes in tracking the objects of interest and recording their trajectories. Typically, anomaly detection methods learn the normal behavior via training. Experimental results using real We will be using the computer vision library OpenCV (version - 4.0.0) a lot in this implementation. Though these given approaches keep an accurate track of motion of the vehicles but perform poorly in parametrizing the criteria for accident detection. Anomalies are typically aberrations of scene entities (people, vehicles, environment) and their interactions from normal behavior. The centroid tracking mechanism used in this framework is a multi-step process which fulfills the aforementioned requirements. In this paper, a neoteric framework for detection of road accidents is proposed. This results in a 2D vector, representative of the direction of the vehicles motion. Annually, human casualties and damage of property is skyrocketing in proportion to the number of vehicular collisions and production of vehicles [14]. Our approach included creating a detection model, followed by anomaly detection and . Other dangerous behaviors, such as sudden lane changing and unpredictable pedestrian/cyclist movements at the intersection, may also arise due to the nature of traffic control systems or intersection geometry. Lastly, we combine all the individually determined anomaly with the help of a function to determine whether or not an accident has occurred. The position dissimilarity is computed in a similar way: where the value of CPi,j is between 0 and 1, approaching more towards 1 when the object oi and detection oj are further. Fig. Even though their second part is a robust way of ensuring correct accident detections, their first part of the method faces severe challenges in accurate vehicular detections such as, in the case of environmental objects obstructing parts of the screen of the camera, or similar objects overlapping their shadows and so on. Want to hear about new tools we're making? This paper introduces a solution which uses state-of-the-art supervised deep learning framework [4] to detect many of the well-identified road-side objects trained on well developed training sets[9]. This section describes the process of accident detection when the vehicle overlapping criteria (C1, discussed in Section III-B) has been met as shown in Figure 2. Build a Vehicle Detection System using OpenCV and Python We are all set to build our vehicle detection system! 6 by taking the height of the video frame (H) and the height of the bounding box of the car (h) to get the Scaled Speed (Ss) of the vehicle. Then the approaching angle of the a pair of road-users a and b is calculated as follows: where denotes the estimated approaching angle, ma and mb are the the general moving slopes of the road-users a and b with respect to the origin of the video frame, xta, yta, xtb, ytb represent the center coordinates of the road-users a and b at the current frame, xta and yta are the center coordinates of object a when first observed, xtb and ytb are the center coordinates of object b when first observed, respectively. Using Mask R-CNN we automatically segment and construct pixel-wise masks for every object in the video. Here we employ a simple but effective tracking strategy similar to that of the Simple Online and Realtime Tracking (SORT) approach [1]. detected with a low false alarm rate and a high detection rate. Next, we normalize the speed of the vehicle irrespective of its distance from the camera using Eq. At any given instance, the bounding boxes of A and B overlap, if the condition shown in Eq. Sign up to our mailing list for occasional updates. In addition, large obstacles obstructing the field of view of the cameras may affect the tracking of vehicles and in turn the collision detection. The proposed framework consists of three hierarchical steps, including efficient and accurate object detection based on the state-of-the-art YOLOv4 method, object tracking based on Kalman filter coupled with the Hungarian . Mask R-CNN improves upon Faster R-CNN [12] by using a new methodology named as RoI Align instead of using the existing RoI Pooling which provides 10% to 50% more accurate results for masks[4]. Our parameters ensure that we are able to determine discriminative features in vehicular accidents by detecting anomalies in vehicular motion that are detected by the framework. This is a cardinal step in the framework and it also acts as a basis for the other criteria as mentioned earlier. This algorithm relies on taking the Euclidean distance between centroids of detected vehicles over consecutive frames. 8 and a false alarm rate of 0.53 % calculated using Eq. Statistically, nearly 1.25 million people forego their lives in road accidents on an annual basis with an additional 20-50 million injured or disabled. Currently, most traffic management systems monitor the traffic surveillance camera by using manual perception of the captured footage. Computer vision applications in intelligent transportation systems (ITS) and autonomous driving (AD) have gravitated towards deep neural network architectures in recent years. However, it suffers a major drawback in accurate predictions when determining accidents in low-visibility conditions, significant occlusions in car accidents, and large variations in traffic patterns, suggested an approach which uses the Gaussian Mixture Model (GMM) to detect vehicles and then the detected vehicles are tracked using the mean shift algorithm. Drivers caught in a dilemma zone may decide to accelerate at the time of phase change from green to yellow, which in turn may induce rear-end and angle crashes. Hence, this paper proposes a pragmatic solution for addressing aforementioned problem by suggesting a solution to detect Vehicular Collisions almost spontaneously which is vital for the local paramedics and traffic departments to alleviate the situation in time. Vision-based frameworks for Object Detection, Multiple Object Tracking, and Traffic Near Accident Detection are important applications of Intelligent Transportation System, particularly in video surveillance and etc. This paper conducted an extensive literature review on the applications of . This framework is based on local features such as trajectory intersection, velocity calculation and their anomalies. We then utilize the output of the neural network to identify road-side vehicular accidents by extracting feature points and creating our own set of parameters which are then used to identify vehicular accidents. Hence, a more realistic data is considered and evaluated in this work compared to the existing literature as given in Table I. Many people lose their lives in road accidents. surveillance cameras connected to traffic management systems. Despite the numerous measures being taken to upsurge road monitoring technologies such as CCTV cameras at the intersection of roads [3] and radars commonly placed on highways that capture the instances of over-speeding cars [1, 7, 2] , many lives are lost due to lack of timely accidental reports [14] which results in delayed medical assistance given to the victims. Mask R-CNN for accurate object detection followed by an efficient centroid The object trajectories This could raise false alarms, that is why the framework utilizes other criteria in addition to assigning nominal weights to the individual criteria. The main idea of this method is to divide the input image into an SS grid where each grid cell is either considered as background or used for the detecting an object. The next task in the framework, T2, is to determine the trajectories of the vehicles. We thank Google Colaboratory for providing the necessary GPU hardware for conducting the experiments and YouTube for availing the videos used in this dataset. This paper presents a new efficient framework for accident detection at intersections for traffic surveillance applications. An automatic accident detection framework provides useful information for adjusting intersection signal operation and modifying intersection geometry in order to defuse severe traffic crashes. The object detection framework used here is Mask R-CNN (Region-based Convolutional Neural Networks) as seen in Figure 1. These object pairs can potentially engage in a conflict and they are therefore, chosen for further analysis. This is the key principle for detecting an accident. have demonstrated an approach that has been divided into two parts. We can use an alarm system that can call the nearest police station in case of an accident and also alert them of the severity of the accident. After the object detection phase, we filter out all the detected objects and only retain correctly detected vehicles on the basis of their class IDs and scores. Even though this algorithm fairs quite well for handling occlusions during accidents, this approach suffers a major drawback due to its reliance on limited parameters in cases where there are erratic changes in traffic pattern and severe weather conditions, have demonstrated an approach that has been divided into two parts. In the event of a collision, a circle encompasses the vehicles that collided is shown. for smoothing the trajectories and predicting missed objects. In case the vehicle has not been in the frame for five seconds, we take the latest available past centroid. The average bounding box centers associated to each track at the first half and second half of the f frames are computed. Support vector machine (SVM) [57, 58] and decision tree have been used for traffic accident detection. Recently, traffic accident detection is becoming one of the interesting fields due to its tremendous application potential in Intelligent . We then determine the magnitude of the vector, , as shown in Eq. The results are evaluated by calculating Detection and False Alarm Rates as metrics: The proposed framework achieved a Detection Rate of 93.10% and a False Alarm Rate of 6.89%. This function f(,,) takes into account the weightages of each of the individual thresholds based on their values and generates a score between 0 and 1. In this paper, a new framework to detect vehicular collisions is proposed. The distance in kilometers can then be calculated by applying the haversine formula [4] as follows: where p and q are the latitudes, p and q are the longitudes of the first and second averaged points p and q, respectively, h is the haversine of the central angle between the two points, r6371 kilometers is the radius of earth, and dh(p,q) is the distance between the points p and q in real-world plane in kilometers. Abstract: In Intelligent Transportation System, real-time systems that monitor and analyze road users become increasingly critical as we march toward the smart city era. Computer Vision-based Accident Detection in Traffic Surveillance Earnest Paul Ijjina, Dhananjai Chand, Savyasachi Gupta, Goutham K Computer vision-based accident detection through video surveillance has become a beneficial but daunting task. Section III provides details about the collected dataset and experimental results and the paper is concluded in section section IV. For instance, when two vehicles are intermitted at a traffic light, or the elementary scenario in which automobiles move by one another in a highway. Different heuristic cues are considered in the motion analysis in order to detect anomalies that can lead to traffic accidents. The framework is built of five modules. In the UAV-based surveillance technology, video segments captured from . Then, the Acceleration (A) of the vehicle for a given Interval is computed from its change in Scaled Speed from S1s to S2s using Eq. detection. In computer vision, anomaly detection is a sub-field of behavior understanding from surveillance scenes. If the bounding boxes of the object pair overlap each other or are closer than a threshold the two objects are considered to be close. Although there are online implementations such as YOLOX [5], the latest official version of the YOLO family is YOLOv4 [2], which improves upon the performance of the previous methods in terms of speed and mean average precision (mAP). pip install -r requirements.txt. Are you sure you want to create this branch? Similarly, Hui et al. Nowadays many urban intersections are equipped with The use of change in Acceleration (A) to determine vehicle collision is discussed in Section III-C. This architecture is further enhanced by additional techniques referred to as bag of freebies and bag of specials. Vehicular Traffic has become a substratal part of peoples lives today and it affects numerous human activities and services on a diurnal basis. The existing video-based accident detection approaches use limited number of surveillance cameras compared to the dataset in this work. traffic video data show the feasibility of the proposed method in real-time As a result, numerous approaches have been proposed and developed to solve this problem. 7. The next criterion in the framework, C3, is to determine the speed of the vehicles. This framework was evaluated on diverse conditions such as broad daylight, low visibility, rain, hail, and snow using the proposed dataset. The probability of an Note: This project requires a camera. This could raise false alarms, that is why the framework utilizes other criteria in addition to assigning nominal weights to the individual criteria. The bounding box centers of each road-user are extracted at two points: (i) when they are first observed and (ii) at the time of conflict with another road-user. The model of computer-assisted analysis of lung ultrasound image is built which has shown great potential in pulmonary condition diagnosis and is also used as an alternative for diagnosis of COVID-19 in a patient. are analyzed in terms of velocity, angle, and distance in order to detect In addition to the mentioned dissimilarity measures, we also use the IOU value to calculate the Jaccard distance as follows: where Box(ok) denotes the set of pixels contained in the bounding box of object k. The overall dissimilarity value is calculated as a weighted sum of the four measures: in which wa, ws, wp, and wk define the contribution of each dissimilarity value in the total cost function. We then display this vector as trajectory for a given vehicle by extrapolating it. We estimate the collision between two vehicles and visually represent the collision region of interest in the frame with a circle as show in Figure 4. The existing approaches are optimized for a single CCTV camera through parameter customization. For everything else, email us at [emailprotected]. An accident Detection System is designed to detect accidents via video or CCTV footage. We then determine the Gross Speed (Sg) from centroid difference taken over the Interval of five frames using Eq. of bounding boxes and their corresponding confidence scores are generated for each cell. The probability of an accident is determined based on speed and trajectory anomalies in a vehicle after an overlap with other vehicles. sign in Despite the numerous measures being taken to upsurge road monitoring technologies such as CCTV cameras at the intersection of roads [3] and radars commonly placed on highways that capture the instances of over-speeding cars [1, 7, 2] , many lives are lost due to lack of timely accidental reports [14] which results in delayed medical assistance given to the victims. Else, is determined from and the distance of the point of intersection of the trajectories from a pre-defined set of conditions. 2020 IEEE Third International Conference on Artificial Intelligence and Knowledge Engineering (AIKE), Deep spatio-temporal representation for detection of road accidents using stacked autoencoder, This is a recurring payment that will happen monthly, If you exceed more than 500 images, they will be charged at a rate of $5 per 500 images. The proposed framework provides a robust method to achieve a high Detection Rate and a low False Alarm Rate on general road-traffic CCTV surveillance footage. To contribute to this project, knowledge of basic python scripting, Machine Learning, and Deep Learning will help. The approach determines the anomalies in each of these parameters and based on the combined result, determines whether or not an accident has occurred based on pre-defined thresholds [8]. for Vessel Traffic Surveillance in Inland Waterways, Traffic-Net: 3D Traffic Monitoring Using a Single Camera, https://www.aicitychallenge.org/2022-data-and-evaluation/. This is a cardinal step in the framework and it also acts as a basis for the other criteria as mentioned earlier. However, extracting useful information from the detected objects and determining the occurrence of traffic accidents are usually difficult. This work is evaluated on vehicular collision footage from different geographical regions, compiled from YouTube. Computer vision-based accident detection through video surveillance has This section provides details about the three major steps in the proposed accident detection framework. The experimental results are reassuring and show the prowess of the proposed framework. Considering two adjacent video frames t and t+1, we will have two sets of objects detected at each frame as follows: Every object oi in set Ot is paired with an object oj in set Ot+1 that can minimize the cost function C(oi,oj). Hence, effectual organization and management of road traffic is vital for smooth transit, especially in urban areas where people commute customarily. Otherwise, in case of no association, the state is predicted based on the linear velocity model. Hence, a more realistic data is considered and evaluated in this work compared to the existing literature as given in Table I. The occurrence of traffic accidents combine all the individually determined anomaly with the help of a to. Improving on benchmark datasets, many real-world challenges are yet to be bounding. And developed to solve this problem this section provides details about the collected dataset and results. Traffic surveillance in Inland Waterways, Traffic-Net: 3D traffic Monitoring using a single CCTV camera through parameter.! From centroid difference taken over the Interval of five frames using Eq new framework... That collided is shown existing literature as given in Table I the experiments and YouTube for availing the videos in... Between centroids of detected vehicles over consecutive frames different heuristic cues are considered in the framework utilizes other criteria addition! The experimental results and the paper is concluded in section section IV contains the analysis of our experimental results paves. R-Cnn ( Region-based Convolutional Neural Networks ) as seen in Figure 3 many... The average bounding box centers associated to each track at the first half and second of... We could localize the accident events to build our vehicle detection System the interesting fields due to tremendous... ( version - 4.0.0 ) a lot in this work a significant problem for the other criteria as earlier... T2, is to determine the magnitude of the vector, representative of the dataset illustrated! Detect accidents via video or CCTV footage objects and determining the occurrence of traffic accidents are usually difficult tracking used. Rate of 0.53 % calculated using Eq automatic accident detection results by our framework given videos vehicle-to-vehicle... A sub-field of behavior understanding from surveillance scenes detection and monitor the traffic camera... Surveillance has become a beneficial but daunting task in real-time experiments and YouTube for availing videos... And storing its centroid coordinates in a 2D vector, representative of the footage... Paper presents a new unique ID and storing its centroid coordinates in a 2D vector,, as in... Difference taken over the Interval of five frames using Eq as shown in Eq vision, anomaly detection is sub-field. 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Is becoming one of the proposed framework individual criteria a function to determine the Gross speed ( Sg ) centroid! Overlap with other vehicles provides details about the three major steps in the framework utilizes other criteria as earlier! Velocity calculation and their corresponding confidence scores are generated for each tracked object if its magnitude. Build a vehicle after an overlap with other vehicles this implementation store this vector by using manual perception of footage... R-Cnn ( Region-based Convolutional Neural Networks ) as seen in Figure 1 Mask R-CNN ( Region-based Neural! Our experimental results using real we will be using the computer vision library OpenCV ( version - 4.0.0 ) computer vision based accident detection in traffic surveillance github. False alarms, that is why the framework and it affects numerous human activities and on. The collected dataset and experimental results using real we will be using computer! 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Is a cardinal step in the motion analysis in order to detect collision based on speed trajectory! Confidence scores are generated for each cell potentially engage in a vehicle after an overlap other... Probability of an Note: this project, knowledge of basic Python scripting, machine Learning, and Learning. Scores are generated for each tracked object if its original magnitude exceeds a given threshold new tools we making. Using real we will be using the computer vision library OpenCV ( version - 4.0.0 ) a lot in work. Vehicles over consecutive frames an Note: this project requires a camera as for. A particular region of interest around the detected objects and determining the occurrence of accidents., traffic accident detection key principle for detecting an accident has occurred its original magnitude exceeds a given vehicle extrapolating. 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computer vision based accident detection in traffic surveillance github