Direct Recovery of Three-Dimensional Scene Geometry From Binocular Stereo Disparity
IEEE Transactions on Pattern Analysis and Machine Intelligence
Algorithms in C: Parts 1-4, Fundamentals, Data Structures, Sorting, and Searching
Algorithms in C: Parts 1-4, Fundamentals, Data Structures, Sorting, and Searching
Computer and Robot Vision
Color-Based Tracking of Heads and Other Mobile Objects at Video Frame Rates
CVPR '97 Proceedings of the 1997 Conference on Computer Vision and Pattern Recognition (CVPR '97)
Segmentation and Tracking of Faces in Color Images
FG '96 Proceedings of the 2nd International Conference on Automatic Face and Gesture Recognition (FG '96)
Structural health monitoring using adaptive LMS filters
International Journal of Computer Applications in Technology
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When a construction company builds a high structure, many piles should be driven into the ground by a hammer whose weight is typically 7000kg in order to make the ground under the structure safe and strong. It is essential to determine whether a pile is penetrated into the ground enough to support the weight of the structure since ground characteristics at different locations are different from each other. In order to measure the pile movements, a specially designed mark is designed and a high-speed line-scan camera is used in this paper. A mark, in which black and white right-angled triangles are stacked, is used for the measurements of movement information for vertical distances, horizontal distances and rotational angles simultaneously. The measurement performance of dynamic characteristics of the pile at impact instant is improved dramatically compared with the equipment using speckle laser sensors. The developed visual measurement system is successfully applied for a real penetration measurement system for building construction.