Sound-image position control apparatus

2000 ◽  
Vol 107 (4) ◽  
pp. 1813
Author(s):  
Satoshi Sekine
Keyword(s):  
Position Control ◽  
Sound Image ◽  
Image Position ◽  
Control Apparatus

Position and Posture Measurement Method of the Omnidirectional Camera Using Identification Markers

2018 ◽  
Vol 30 (3) ◽  
pp. 354-362 ◽  
Author(s):  
Naoya Hatakeyama ◽  
◽  
Tohru Sasaki ◽  
Kenji Terabayashi ◽  
Masahiro Funato ◽  
...  
Keyword(s):  
Measurement Method ◽  
Position Control ◽  
Three Dimensional ◽  
Position Estimation ◽  
Position Measurement ◽  
Omnidirectional Camera ◽  
Camera Systems ◽  
Dimensional Measurements ◽  
Aerial Vehicle ◽  
Image Position

Recently, many studies on unmanned aerial vehicle (UAVs) that perform position control using camera images have been conducted. The measurements of the surrounding environment and position of the mobile robot are important in controlling the UAV. The distance and direction of the optical ray to the object can be obtained from the diameter and coordinates in the image. In these studies, various camera systems using plane cameras, fisheye cameras, or omnidirectional cameras are used. Because these camera systems have different geometrical optics, one simple image position measurement method cannot yield the position and posture. Therefore, we propose a new method that measures the position from the size of three-dimensional landmarks using omnidirectional cameras. Three-dimensional measurements are performed by these omnidirectional cameras using the distance and direction to the object. This method can measure three-dimensional positions from the direction and distance of the ray; therefore, if the optical path such as the reflection or refraction is known, it can perform measurements using a different optical system’s camera. In this study, we construct a method to obtain the relative position and relative posture necessary for the self-position estimation based on an object with an omnidirectional camera; further, we verify this method by experiment.

scholarly journals Feedback Position Control Apparatus of Tokamak Plasma Horizontal Position with a Digital Drive

1998 ◽  
Vol 118 (5) ◽  
pp. 523-529 ◽  
Author(s):  
Yasunori Mizuno ◽  
Hideki Muramatsu ◽  
Takamitsu Aoki ◽  
Taro Sometani
Keyword(s):  
Position Control ◽  
Tokamak Plasma ◽  
Horizontal Position ◽  
Control Apparatus

Simple Identification of Electron Diffraction Ring Patterns

1969 ◽  
Vol 27 ◽  
pp. 160-161
Author(s):  
Carolyn Nohr ◽  
Ann Ayres
Keyword(s):  
Electron Microscope ◽  
Electron Diffraction ◽  
Diffraction Ring ◽  
Image Position

Texts on electron diffraction recommend that the camera constant of the electron microscope be determine d by calibration with a standard crystalline specimen, using the equation

Sign in / Sign up

Export Citation Format

Share Document