MoiréBoard: A Stable, Accurate and Low-cost Camera Tracking Method

2021 ◽  
Author(s):  
Chang Xiao ◽  
Changxi Zheng
2018 ◽  
Author(s):  
Rajat Saxena ◽  
Warsha Barde ◽  
Sachin S. Deshmukh

AbstractMost studies focused on understanding the neural circuits underlying spatial navigation are restricted to small behavioral arenas (≤ 1 m2) because of the limits imposed by the cables extending from the animal to the recording system. New wireless recording systems have significantly increased the recording range. However, the size of arena is still constrained by the lack of a video tracking system capable of monitoring the animal’s movements over large areas integrated with these recording systems. We developed and benchmarked a novel, open-source, scalable multi-camera tracking system based on commercially available and low-cost hardware (Raspberry Pi computers and Raspberry Pi cameras). This Picamera system was used in combination with a wireless recording system for characterizing neural correlates of space in environments of various sizes up to 16.5 m2. Spatial rate maps generated using the Picamera system showed improved accuracy in estimating spatial firing characteristics of neurons compared to a popular commercial system, due to its better temporal accuracy. The system also showed improved accuracy in estimating head direction cell tuning as well as theta phase precession in place cells. This improved temporal accuracy is crucial for accurately aligning videos from multiple cameras in large spaces and characterizing spatially modulated cells in a large environment.


Author(s):  
Ahmed Hossam EL-Din ◽  
S.S Mekhamer ◽  
Hadi M.El-Helw

This paper shows a Comparison between Conventional Method [P&O] and particle swarm optimization [PSO] Based on MPPT Algorithms for Photovoltaic Systems under uniform irradiance and temperature. The main idea is to show that PSO method has a very high tracking speed and has the ability to track MPP under different environmental conditions in addition to an easy hardware implementation using a low-cost microcontroller. MATLAB simulations are carried out under very challenging conditions, namely irradiance and temperature, which reflect a change in the load [KW]. The proposed PSO tracking method Results will be compared with conventional method called [P&O] through MATLAB/SIMULINK.


Author(s):  
Timothy Garrett ◽  
Saverio Debernardis ◽  
Rafael Radkowski ◽  
Carl K. Chang ◽  
Michele Fiorentino ◽  
...  

Augmented reality (AR) applications rely on robust and efficient methods for tracking. Tracking methods use a computer-internal representation of the object to track, which can be either sparse or dense representations. Sparse representations use only a limited set of feature points to represent an object to track, whereas dense representations almost mimic the shape of an object. While algorithms performed on sparse representations are faster, dense representations can distinguish multiple objects. The research presented in this paper investigates the feasibility of a dense tracking method for rigid object tracking, which incorporates the both object identification and object tracking steps. We adopted a tracking method that has been developed for the Microsoft Kinect to support single object tracking. The paper describes this method and presents the results. We also compared two different methods for mesh reconstruction in this algorithm. Since meshes are more informative when identifying a rigid object, this comparison indicates which algorithm shows the best performance for this task and guides our future research efforts.


2009 ◽  
Vol 5 (2) ◽  
pp. 121-128 ◽  
Author(s):  
Pedro Carlos Santos ◽  
André Stork ◽  
Alexandre Buaes ◽  
Carlos Eduardo Pereira ◽  
Joaquim Jorge

2011 ◽  
Author(s):  
Xióngbiao Luó ◽  
Marco Feuerstein ◽  
Takayuki Kitasaka ◽  
Hiroshi Natori ◽  
Hirotsugu Takabatake ◽  
...  

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