3D measurement of a moving object using high-speed multi-vision considering occlusion

2020 ◽  
Vol 2020 (0) ◽  
pp. 2P1-N06
Author(s):  
Risa ICHIMURA ◽  
Yuji YAMAKAWA
Keyword(s):  
High Speed ◽  
Moving Object ◽  
3D Measurement

3D Measurement of a Moving Object Using a Moving Camera Attached with a 6-Axis Sensor

2014 ◽  
Vol 18 (5) ◽  
pp. 736-744
Author(s):  
Toshihiro Akamatsu ◽  
◽  
Fangyan Dong ◽  
Kaoru Hirota
Keyword(s):  
Mobile Robots ◽  
Computational Cost ◽  
Moving Object ◽  
Computational Time ◽  
3D Measurement ◽  
Moving Camera ◽  
Stereo Camera ◽  
Continuous Frame

Measurement using a moving camera and a 6-axis sensor under the camera is proposed to determine the distance from the camera to the surface of a moving object and the object’s position movement in two continuous frame images. This makes it possible to measure the 3D position of a moving object at half of the computational cost while keeping the same accuracy as using a stereo camera. 3D measurement experiments with several original images show that the computational time using the proposal is about twice as fast as that of a stereo camera. The proposed method is planning to be used to vehicles or mobile robots avoid obstacles, and its use as a depth meter is also investigated.

Evaluation of a coded exposure camera for high-speed 3D measurement using microscope

2018 ◽  
Vol 2018 (0) ◽  
pp. 2A1-L16
Author(s):  
Toshihiko YAMASHITA ◽  
Hiroyuki CHIBA ◽  
Kazuki YAMATO ◽  
Hiromasa OKU
Keyword(s):  
High Speed ◽  
3D Measurement ◽  
Coded Exposure

scholarly journals Semi-analytical approaches to vibrations induced by moving loads

2018 ◽  
Vol 211 ◽  
pp. 11005 ◽  
Author(s):  
Zuzana Dimitrovová
Keyword(s):  
Analytical Solutions ◽  
High Speed ◽  
Moving Object ◽  
Moving Loads ◽  
Numerical Convergence ◽  
Practical Applications ◽  
Tight Contact ◽  
Harmonic Components ◽  
Physical Phenomena ◽  
Analytical Approaches

With the evolution of the computational power, there is a tendency to overlook analytical and semi-analytical solutions, despite their inherent obvious advantages. One should, however, be aware of the fact, that these solutions provide the necessary insight into the relevant physical phenomena and are accompanied by highly precise results, quickly obtainable without the necessity of additional numerical convergence tests. The objective of this contribution is to fill the gap in available semi-analytical solutions related to wave propagation induced by moving loads, with practical applications of high-speed rails. The structures that will be considered are composed of a beam and a supporting medium. The beam represents the interface between the structure and the moving object and will be simplified in conformity with the Euler-Bernoulli theory. In this paper the supporting structure will be considered as a two-parameter viscoelastic foundation and the moving object will be simplified by masses carrying constant forces with harmonic components, under assumption of tight contact. Special attention is paid to the proximity of moving masses.

A CMOS Image Sensor with Non-Destructive High-Speed Imaging Mode and Its Applications

2000 ◽  
Vol 12 (5) ◽  
pp. 502-507
Author(s):  
Dwi Handoko ◽  
◽  
Shoji Kawahito ◽  
Minoru Kumahara ◽  
Nobuhiro Kawai ◽  
...  
Keyword(s):  
Video Compression ◽  
High Speed ◽  
Motion Vector ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Moving Object ◽  
High Speed Imaging ◽  
Imaging Mode ◽  
Vector Estimation ◽  
Non Destructive

This paper describes a CMOS image sensor with non-destructive high-speed imaging mode. The proposed sensor reads out high-speed intermediate images without destroying accumulated signal charge and captures video-rate (30 frame/s) images with high SNR. The application of the sensor to a low power motion vector estimation for video compression and high-fidelity imaging of moving object with tracking are also presented. Motion vector estimation using the proposed sensor is possible to reduce computational power by a factor of 1/10 compared to the full search algorithm. The simulation results show that the proposed image sensor with nondestructive high-speed imaging mode is useful for moving object imaging with less shape distortion.

Sign in / Sign up

Export Citation Format

Share Document