Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ki-Wan Choi"'
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 68:2351-2360
We developed a new method, called the tangent plane method (TPM), for more efficiently and accurately estimating 2-D shear wave speed (SWS) from any direction of wave propagation. In this technique, we estimate SWS by solving the Eikonal equation bec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d5bc1a33f0ad9187390e98d8de25cd4
https://doi.org/10.1109/tuffc.2021.3061916
https://doi.org/10.1109/tuffc.2021.3061916
Publikováno v:
IEEE Transactions on Biomedical Engineering. 61:2669-2678
Ultrasound (US)-based thermal imaging is very sensitive to tissue motion, which is a major obstacle to apply US temperature monitoring to noninvasive thermal therapies of in vivo subjects. In this study, we aim to develop a motion compensation method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8a1ae664af97e7a7139286af556f455
https://doi.org/10.1109/tbme.2014.2325070
https://doi.org/10.1109/tbme.2014.2325070
Publikováno v:
Robotics and Autonomous Systems. 60:1592-1606
Improvement of dead reckoning accuracy is essential for robotic localization systems and has been intensively studied. However, existing solutions cannot provide accurate positioning when a robot suffers from changing dynamics such as wheel slip. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acdf8e670aa2ddfff0e3def80b582c7e
https://doi.org/10.1016/j.robot.2012.09.018
https://doi.org/10.1016/j.robot.2012.09.018
Publikováno v:
International Journal of Control, Automation and Systems. 10:558-566
Rate gyros are widely used to calculate the heading angle for mobile robot localization. They are normally calibrated in the factory using an expensive rate table prior to their use. In this paper, a self-calibration method using a monocular camera w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c518e1a433ac761e1476367320e26dc
https://doi.org/10.1007/s12555-012-0312-x
https://doi.org/10.1007/s12555-012-0312-x
Publikováno v:
Robotics and Autonomous Systems. 60:841-851
This paper presents a new feature initialization method for monocular EKF SLAM (Extended Kalman Filter Simultaneous Localization and Mapping) which utilizes a 3D measurement model in the camera frame rather than 2D pixel coordinates in the image plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be8cc8f1b58224a2590de269d29c6314
https://doi.org/10.1016/j.robot.2012.02.002
https://doi.org/10.1016/j.robot.2012.02.002
Publikováno v:
International Journal of Control, Automation and Systems. 8:667-676
The odometry information used in mobile robot localization can contain a significant number of errors when robot experiences slippage. To offset the presence of these errors, the use of a low-cost gyroscope in conjunction with Kalman filtering method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a22683ee5dcc5b3a3af38c06f0c8849
https://doi.org/10.1007/s12555-010-0321-6
https://doi.org/10.1007/s12555-010-0321-6
This chapter presents a new feature initialization method for monocular EKF SLAM (Extended Kalman Filter Simultaneous Localization and Mapping) which utilizes a 3D measurement model in the camera frame rather than a 2D pixel coordinate in the image p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20d9e75c7bf1867320af970a15ee548a
https://doi.org/10.1016/b978-0-12-800881-2.00010-4
https://doi.org/10.1016/b978-0-12-800881-2.00010-4
Publikováno v:
SPIE Proceedings.
Acoustic radiation force is a physical phenomenon caused by propagation of ultrasound in an attenuating medium. When ultrasound propagates in the medium, the momentum of propagating ultrasound is transferred to the medium due to absorption mechanism.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f4fd906338076ae9d0e91c9a15a107d
https://doi.org/10.1117/12.2044995
https://doi.org/10.1117/12.2044995
Publikováno v:
Journal of Applied Physics. 119:234701
When acquiring accurate ultrasonic images, we must precisely estimate the mechanical properties of the soft tissue. This study investigates and estimates the viscoelastic properties of the tissue by analyzing shear waves generated through an acoustic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b99298f751ebce24733662644e5f7ce
https://doi.org/10.1063/1.4953674
https://doi.org/10.1063/1.4953674
Publikováno v:
2012 IEEE International Ultrasonics Symposium.
Noninvasive temperature estimation is important in the field of thermal therapy including High Intensity Focused Ultrasound (HIFU) treatment. Especially, temperature estimation with ultrasound is essential for safe treatment with ultrasound guided HI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73b437ccdf2f42c26d6da47cde451512
https://doi.org/10.1109/ultsym.2012.0406
https://doi.org/10.1109/ultsym.2012.0406