scholarly journals Apparent motion of a coherent and continuously moving random-dot pattern appears slower in update rate

2017 ◽  
Vol 17 (10) ◽  
pp. 732
Author(s):  
Teresa Inoue ◽  
Ikuya Murakami
Keyword(s):  
Apparent Motion ◽  
Update Rate ◽  
Random Dot Pattern

EFFECTS OF LUMINANCE AND COLOR ON APPARENT MOTION

2003 ◽  
Vol 96 (3) ◽  
pp. 1265 ◽  
Author(s):  
ELISABETTA GYULAI
Keyword(s):  
Apparent Motion

Investigation into the Weight Update Rate for Scan-On-Receive Beamforming

2020 ◽  
Author(s):  
Felipe Queiroz de Almeida ◽  
Marwan Younis ◽  
Gerhard Krieger ◽  
Scott Hensley ◽  
Alberto Moreira
Keyword(s):  
Update Rate

scholarly journals An Improved Localization Method for the Transition between Autonomous Underwater Vehicle Homing and Docking

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2468
Author(s):  
Ri Lin ◽  
Feng Zhang ◽  
Dejun Li ◽  
Mingwei Lin ◽  
Gengli Zhou ◽  
...  
Keyword(s):  
Data Exchange ◽  
Autonomous Underwater Vehicle ◽  
Autonomous Underwater Vehicles ◽  
Optimization Method ◽  
Short Baseline ◽  
Localization Accuracy ◽  
Localization Method ◽  
Mapping Algorithm ◽  
Localization And Mapping ◽  
Update Rate

Docking technology for autonomous underwater vehicles (AUVs) involves energy supply, data exchange and navigation, and plays an important role to extend the endurance of the AUVs. The navigation method used in the transition between AUV homing and docking influences subsequent tasks. How to improve the accuracy of the navigation in this stage is important. However, when using ultra-short baseline (USBL), outliers and slow localization updating rates could possibly cause localization errors. Optical navigation methods using underwater lights and cameras are easily affected by the ambient light. All these may reduce the rate of successful docking. In this paper, research on an improved localization method based on multi-sensor information fusion is carried out. To improve the localization performance of AUVs under motion mutation and light variation conditions, an improved underwater simultaneous localization and mapping algorithm based on ORB features (IU-ORBSALM) is proposed. A nonlinear optimization method is proposed to optimize the scale of monocular visual odometry in IU-ORBSLAM and the AUV pose. Localization tests and five docking missions are executed in a swimming pool. The localization results indicate that the localization accuracy and update rate are both improved. The 100% successful docking rate achieved verifies the feasibility of the proposed localization method.

Theories of apparent motion

2015 ◽  
Vol 15 (3) ◽  
pp. 337-358 ◽  
Author(s):  
Valtteri Arstila
Keyword(s):  
Apparent Motion

Apparent motion cues distort object localisation in egocentric space

2003 ◽  
Vol 150 (3) ◽  
pp. 356-362 ◽  
Author(s):  
Madeleine A. Grealy ◽  
Yann Coello ◽  
Dorothy Heffernan
Keyword(s):  
Apparent Motion ◽  
Motion Cues
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