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Due to the sparse distribution of road video surveillance cameras, precise trajectory tracking for hit-and-run vehicles remains a challenging task. Previous research on vehicle trajectory recovery mostly focuses on recovering trajectory with low-sampling-rate GPS coordinates by retrieving road traffic flow patterns from collected GPS information. However, to the best of our knowledge, none of them...
Due to the sparse distribution of road video surveillance cameras, precise trajectory tracking for vehicles remains a challenging task. To the best of our knowledge, none of the previous research considered using on-road taxicabs as mobile video surveillance cameras and road traffic flow patterns, therefore not suitable for recovering trajectories of vehicles. With this insight, we model the travel...
Due to the need of indoor emergency rescue for earthquake disasters, we propose the iPOST (Indoor Post-Earthquake Corridor Obstacle Assessment System) to determine the obstacles in the corridors after earthquakes. Before an earthquake hits, a pre-earthquake image is used to segment its corresponding floor area for determining the presence of obstacles. After an earthquake, the pre-earthquake and post-earthquake...
A series of images of the whole wheel surface was captured by the imaging system. Median filtering and image contrast enhancement were used on the defect images, and then canny edge detection based on gradient histogram was done in further details. The images after edge detection are used for eight-neighbor boundary tracking, to obtain the sizes in-pixel of defects. The experiment system is set to...
In this paper, a defect detecting system of wheel tread based on linear charge coupled device (CCD) is established, and the image recognition technology of wheel tread defects under this system is studied. Firstly, images of the whole wheel tread are captured through the system. Secondly, median filtering and image contrast enhancement are processed on the defect images, and then the canny edge detection...
One key technology for a humanoid robot is to sense the environment accurately and control the movement of the robot in realtime. This paper addresses this problem and focuses on the visual servoing control of an anthropomorphic robotic arm. A high precision, image-based visual servo algorithm for an eye-in-hand visual system is proposed to control the movement of the anthropomorphic arm. The control...
The accuracy of eye gaze estimation by image information is affected by several objective factors, including the image resolution, anatomical structure of eye, posture change, etc. Especially, the irregular movements of head and eye are the main problem and key technology being researched. We describe an effective way of estimating the eye gazing from the elliptical features of one iris under the...
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