Article | 30-November-2018
measurement technology of line structure light has the advantages of fast measurement speed, high precision and low measurement environment requirements, and is widely welcomed [3]. Camera calibration is the main factor that restricts the accuracy of 3D measurement, which has attracted wide attention from scholars and improved step by step.
II.
CAMERA CALIBRATION CONTENT
Wherever Times is specified, Times Roman or Times New Rom The camera calibration method is different according to the way of solving
Ruixia Wu,
Baolong Liu,
Huimin Yao
International Journal of Advanced Network, Monitoring and Controls, Volume 4 , ISSUE 1, 66–71
research-article | 30-November-2020
software and hardware design diagram of the system is shown in Figure 1. The hardware part is mainly composed of two CCD cameras, a grating projector and a table rotation control module. The software part includes system calibration, three-dimensional information solving and model reconstruction.
Figure 1.
The measurement system
A.
Camera selection
Selection requirements: This project is expected to control the average error of the dental model measurement to 0.05mm, the camera measurement range is
Yi Guo,
Xiaoyi Ruan
International Journal of Advanced Network, Monitoring and Controls, Volume 6 , ISSUE 2, 56–64
Article | 30-November-2018
calibration can improve the accuracy of point cloud reconstruction and improve the 3D contour reconstruction of the measured object.
The reconstruction of the rotating platform can be divided into three types according to the different movement modes: the first is that the camera rotates around the rotating axis [3], and the measured object does not move; the second is that the camera does not move, and the object rotates with the rotating platform [4] The third is that the camera and the object are
Doudou Lei,
Baolong Liu,
Huimin Yao
International Journal of Advanced Network, Monitoring and Controls, Volume 4 , ISSUE 1, 48–52
Research paper | 30-October-2017
Many dual frame estimators have been proposed in the statistics literature. Some of these estimators are theoretically optimal but hard to apply in practice, whereas others are applicable but have larger variances than the first group. In this paper, a Joint Calibration Estimator (JCE) is proposed that is simple to apply in practice and meets many desirable properties for dual frame estimators. The JCE is asymptotically design unbiased conditional on the strong relationship between the
Mahmoud A. Elkasabi,
Steven G. Heeringa,
James M. Lepkowski
Statistics in Transition New Series, Volume 16 , ISSUE 1, 7–36
Article | 06-July-2017
Domain estimates are typically obtained using calibration estimators that are direct or modified direct. They are direct if they strictly use data within the domain of interest. They are modified direct if they use both data within and outside the domain of interest. An alternative way of producing these estimates is through small area procedures. In this article, we compare the performance of these two approaches via a simulation. The population is generated using a hierarchical model that
Michael A. Hidiroglou,
Victor M. Estevao
Statistics in Transition New Series, Volume 17 , ISSUE 1, 133–154
Research Article | 13-June-2021
In this paper, two modified, design-based calibration ratio-type estimators are presented. The suggested estimators were developed under stratified random sampling using information on an auxiliary variable in the form of robust statistical measures, including Gini’s mean difference, Downton’s method and probability weighted moments. The properties (biases and MSEs) of the proposed estimators are studied up to the terms of first order approximation by means of Taylor’s Series
Ahmed Audu,
Rajesh Singh,
Supriya Khare
Statistics in Transition New Series, Volume 22 , ISSUE 2, 125–142
Research Article | 17-September-2018
to obtain optical measurements with this cameras. However, digital cameras can also be used as optical measuring instruments knowing their features in depth. Therefore, in this paper is proposed a calibration method for monochrome digital camera using a monochromator and an automatic rotation system. In this way, the uniformity of the pixels response is verified, bad pixels are detected, and the sensitivity curve is obtained. The results show the advantages of the method to find regions of pixels
J.-S. Botero-Valencia,
J. Valencia-Aguirre,
D.A. Marquez-Viloria,
J.-F. Vargas-Bonilla,
A. Gallardo-del Angel
International Journal on Smart Sensing and Intelligent Systems, Volume 11 , ISSUE 1, 1–8
Sampling Methods | 27-May-2018
This paper examines the chain of weights, beginning with the basic sampling weights for the respondents. These were then converted to reweights to reduce the bias due to missing quantities. If micro auxiliary variables are available for a gross sample, we suggest taking advantage first of the response propensity weights, and then of the calibrated weights with macro (aggregate) auxiliary variables. We also examined the calibration methodology that starts from the basic weights. Simulated data
Seppo Laaksonen,
Auli Hämäläinen
Statistics in Transition New Series, Volume 19 , ISSUE 1, 45–60
Research Article | 13-December-2017
This paper presents the design and the implementation of a standard auto-calibration system, to correct measurement chain and ensure its accuracy. The adopted solution consists in designing a reconfigurable instrumentation based on the use of a programmable analog circuit (FPAA), allowing the automation of various test and adjustment operations. The measurement chain transfer curve is periodically corrected using the progressive polynomial calibration method, ensuring systematic correction of
M. NADI,
C. MARGO,
M. KOUIDER,
J. PRADO,
D. KOURTICHE
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 1, 21–33
Article | 01-June-2016
A circuit design with bespoke control software is described which has delivered precision in electrical impedance measurements of ~ 10ppm, after calibration. It is low-cost and applicable to jobs such as direct measurement using a sensor whose resistance changes with some physical quantity of interest; calibration at end of line in the production of such sensors; or calibration of equipment which may be out of warranty. It was developed using resistance temperature detectors (RTDs).
Ciaran Doyle,
Dr Daniel Riordan,
Dr Joseph Walsh
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 509–525
Research Article | 13-December-2017
. Although the probe is capable of a very wide frequency range, separate instruments are generally required, and here we focus on measurements above 1MHz. We demonstrate measurements in the frequency domain using a vector network analyser, and in the time domain using a broadband oscilloscope. For switching, we employed a coaxial switch and demonstrate how that is included within the instrument calibration. Calibration of the probe used three references: an open circuit, short circuit (indium foil) and a
I M Woodhead,
I Platt,
J H Christie,
S Krenek
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 2, 459–469
Article | 01-December-2012
Biqiang Du,
Ning Xi,
Erick Nieves
International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 4, 987–1001
Research paper | 20-February-2012
conditions of calibration. To improve the accuracy and satisfy the real-time requirement of the tracking system, a real-time method to correct the radial distortion is proposed in this paper. The experiments show that the speed of the correction method is satisfactory, and the accuracy of tracking system is effectively improved by the method.
Haibin Wang,
Qing He,
Guan Guan,
Bin Leng,
Dewen Zeng
International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 1, 259–277
Research Article | 15-February-2020
In this work an automated traffic analysis in aerial image sequences recorded by an unmanned aerial vehicle (UAV) has been developed, which provides the trajectories of the vehicles especially during overtaking. Methods of photogrammetry and image processing are used to detect the vehicles and to determine and track their positions. Camera calibration is necessary in order to transform image coordinates into world coordinates.
Tom Hößler,
Tom Landgraf
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–5
Article | 01-December-2016
. The simulation results show that the calibration technique is efficient.
Sunita Sinha,
Nirupama Mandal
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 4, 2204–2218
Research Article | 12-December-2017
In this work a low cost sensor has been developed to measure three-directional forces. The theory, design and sensor construction details are presented. It was constructed by using commercial strain gauges. Finite element method was adopted to optimize the structure dimensions, and improve the sensitivity of force sensor by distributing the sensing stress on the maximum strain positions. A hardware conditioning circuits was developed for the 3D force sensor. The calibration experiments were
S. Boukhenous
International Journal on Smart Sensing and Intelligent Systems, Volume 4 , ISSUE 1, 21–34
research-article | 30-November-2019
required compared to computer vision based which are calibration intensive.
The phase-based measurements are weakly dependent on the illumination condition of the object as it is ratio based. The NIR spectroscopy and the computer vision-based systems are highly influenced by the ambient illumination of the object.
The phase-based measurement are independent of the skin color of the apples. NIR spectroscopy and computer vision-based systems are highly dependent on the skin color, shape, and size of
M. Assaad
International Journal on Smart Sensing and Intelligent Systems, Volume 13 , ISSUE 1, 1–10
research-article | 30-November-2018
a quick and easy approach to diagnose the pathogen and to predict potential damage of chrysanthemum is in great demand. Furthermore, this study developed (lysate) calibration curves using DNA samples extracted from single nematodes, since developing lysate calibration curves may be a quicker approach than developing soil calibration curves. Though it may be ideal that each real-time PCR protocol contains specific calibration curves developed using DNA samples extracted from soil, developing soil
Masanori Kawanobe,
Koki Toyota,
Hidehito Uchihara,
Mikoto Takae
Journal of Nematology, Volume 51 , 1–11
Article | 31-December-2020
The paper deals with a comparison of shocks (values of acceleration coefficients and inertial forces) of two types of vehicles (T-810 and T-815 MK IV) during transport experiments on a motorway. The measurement was performed using an OM-CP-ULTRASHOCK-5 three-axial accelerometer with a datalogger and calibration certificate. The goal of the paper is to accept or reject a hypothesis of the existence of a statistically significant difference between the values of the acceleration coefficients
Martin VLKOVSKÝ,
Petr VESELÍK
Transport Problems, Volume 15 , ISSUE 4, Part 2, 265–274
Research Article | 15-February-2020
Non-invasive methods for monitoring foraging choice in free ranging grazing animals are largely limited to accelerometers and video calibration. Acoustic data from a wireless microphone attached to the skull has been used to distinguish between resting and feeding bouts in free ranging cattle, sheep and goats. Similar data has been reported in restrained sheep presented with forage of differing dry matter content. We take these approaches further by using a small video camera attached to
J. Sneddon,
A. Mason
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 5, 1–4
Article | 05-September-2021
Matthew Joshua Iseh,
Ekaette Inyang Enang
Statistics in Transition New Series, Volume 22 , ISSUE 3, 15–30
Article | 27-December-2017
calculated theoretically. With four different kinds of parameters in the U-shaped channel flume algorithm are verified, the results show that the theoretical calculation corresponds to the actual observation. Therefore, the boundary layer theory to calculate the flow of the flume is not only studied the amount of water problems in theory, simplifies the complicated test calibration, but also has important practical value.
Wu Wei
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 1, 67–88
research-article | 30-November-2020
devices. Therefore, finding a method with simpler calibration procedure is needed by the industry. This is another aspect which is addressed by this paper.
Finally, one difficulty with commonly used sand detectors is the requirement for having fluid velocity as a pre-requisite for sand flow rate estimation. For instance, in several applications such as subsea wellheads, there is no flow meter by which the fluid velocity can be measured. Therefore, having a method for sand flow rate measurement in
H. Seraj*,
B. Evans,
M. Sarmadivaleh
International Journal on Smart Sensing and Intelligent Systems, Volume 14 , ISSUE 1, 1–13
Article | 01-March-2012
Yong Xiao,
Chi Zhang,
Xiaoyu Ge,
Peiqi Pan
International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 1, 95–106
Article | 15-September-2020
Daniel Bonnéry,
Yang Cheng,
Partha Lahiri
Statistics in Transition New Series, Volume 21 , ISSUE 4, 166–190
Research Article | 27-December-2017
In order to improve the measurement accuracy of three-dimensional (3D) scanning robot, a method of 3D scanning robot system error modeling and compensation based on particle swarm optimization radial basis function neural network (PSO-RBFNN) is proposed to achieve intelligent compensation of measurement error. The structure, calibration and error modeling process of 3D scanning robot system are mainly described. Cleverly using the iterative closest point (ICP) algorithm to construct
Jianhong Qi,
Jinda Cai
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 2, 837–855
Article | 08-April-2018
Wu Gui,
Tao Jun
International Journal of Advanced Network, Monitoring and Controls, Volume 1 , ISSUE 2, 68–75
Research Article | 18-March-2020
J. Al-Jararha,
Mazen Sulaiman
Statistics in Transition New Series, Volume 21 , ISSUE 1, 37–53
Research Article | 13-December-2017
to cater this solution. The proposed RSSI-based tracking technique is divided into two main phases, namely the calibration of RSSI coefficients (deterministic phase) and the distance along with position estimation of user location by iterative trilateration (probabilistic phase). A low complexity RSSI smoothing algorithm is implemented to minimize the dynamic fluctuation of radio signal received from each reference node when the target node is moving. Experiment measurements are carried out to
Erin-Ee-Lin Lau,
Boon-Giin Lee,
Seung-Chul Lee,
Wan-Young Chung
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 2, 534–548
research-article | 30-November-2019
calibration in P300 and SSVEP (steady-state visual evoked potential) paradigms or often longer training in MI-BCI (motor imagery-brain computer interface). While the lengths of these sessions are usually fixed or limited, it is possible that in some cases longer training or repeating the whole session on another day may turn a fail into successful communication.
The quality of EEG recordings, rendering of the stimuli and the efficiency of the signal processing algorithms used in different BCI systems vary
Anna Chabuda,
Marian Dovgialo,
Anna Duszyk,
Anna Stróż,
Maciej Pawlisz,
Piotr Durka
Acta Neurobiologiae Experimentalis, Volume 79 , ISSUE 4, 421–431
Article | 02-November-2017
Prasanna Sridhar,
Asad M. Madni
International Journal on Smart Sensing and Intelligent Systems, Volume 2 , ISSUE 1, 1–14
Article | 01-September-2016
calibration. The algorithm is simple and efficient providing fast real-time implementation, since it does not require any data processing. The proposed technique features robustness and simplicity. The implications of this method reside in its applicability in an industrial platform.
Nicola Ivan Giannoccaro,
Tetsuzo Sakamoto,
Issei Uchitomi
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 3, 1516–1533
research-article | 23-August-2019
calibration of a sensor, a linear relationship between input and output is highly desirable. A general block diagram of the linearization unit showing important functional subunits is shown in Figure 3.
Figure 3:
A general block diagram of the linearization unit.
By linearization, the nonlinear response curve can be converted into a straight line fit, which simplifies the calibration process. So, the calibration may be performed in the shortest time and at low cost. Hence, it is most convenient
Tarikul Islam,
S. C. Mukhopadhyay
International Journal on Smart Sensing and Intelligent Systems
, Volume 12 , ISSUE 1, 1–21
Article | 14-October-2020
This paper describes an enzyme immunoassay for the quantitative determination of IgG, IgA, and IgM immunoglobulins on RBCs. Ether eluates made from RBCs were followed by an enzyme-linked immunosorbent assay of immunoglobulin concentration. Calibration curves were derived from immunoglobulin standards and the number of molecules of each isotype per RBC was calculated. The assay was carried out in 200 healthy blood donors and 62 patients with warm autoimmune hemolytic anemia (AIHA), two of them
Antonio A. Bencomo,
Martha Díaz,
Yalile Alfonso,
Odalys Valdés,
María E. Alfonso
Immunohematology, Volume 19 , ISSUE 2, 47–53
Article | 05-June-2013
Aditi Bhattacharya,
Dibyendu Basu,
Bhaswati Goswami,
Ratna Ghosh
International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 3, 1116–1132
Research paper | 01-September-2011
This paper describes a hand-arm system equipped with optical three-axis tactile sensors and a binocular vision sensor. The vision compensates for the limitations of tactile information and tactile sensing, and vice versa. The tactile sensor can obtain geometrical data as real scale, while image data requires calibration to obtain length as a metric unit. Even if stereovision is used, we cannot obtain sufficient precision. In the evaluation test, the robotic hand equipped with tactile sensors
Sukarnur Che Abdullah,
Takuya Ikai,
Yusuke Dosho,
Hanafiah Bin Yussof,
Masahiro Ohka
International Journal on Smart Sensing and Intelligent Systems, Volume 4 , ISSUE 3, 508–5026
Article | 01-June-2016
applications in automated vehicle inspection, cleaning, and security screening. In order to efficiently navigate the robotic manipulator along the vehicle’s surface within regions of interest that are selectively identified, an efficient and accurate integration of information from multiple RGB-D sensors and robotic components is proposed. The main components of the proposed approach include: automated vehicle category recognition from visual information; RGB-D sensors calibration; extraction of specific
Danial Nakhaeinia,
Pierre Payeur,
Alberto Chávez-Aragón,
Ana-Maria Cretu,
Robert Laganière,
Rizwan Macknojia
International Journal on Smart Sensing and Intelligent Systems, Volume 9 , ISSUE 2, 419–447
Article | 08-December-2019
calibrated with the Global Regression method acquiring a calibration matrix with a standard error percentage of full scale of maximum 0.5%. The instrumented pedal distinguishes itself from state-of-the-art techniques through (i) compatibility: it fits on every conventional bicycle, (ii) compactness: not influencing the cycling kinematics, (iii) broad applicability: it is applicable for in-situ measurements with extreme manoeuvres and (iv) accuracy: it delivers a relative high accuracy in relation to the
Sien DIELTIENS,
Jordi D’HONDT,
Marc JUWET,
Mark VERSTEYHE
Transport Problems, Volume 14 , ISSUE 4, 151–160
Article | 08-April-2018
housing. Instrumentation, testing, and calibration are the three main milestones for this project As a result, The Inlet Mass Flow Rate numeric indicator value is calculated, not measured. The calculated value is dependent on the measured values of Compressor Inlet Temperature (T1), Compressor Inlet Static Pressure (Ps), and Compressor Inlet Dynamic Pressure (Pt-Ps). However, the pressure, temperature and thrust were tested as a function of RPM. The mini turbine engine is ready to be used in student
Haifa El-sadi,
Anthony Duva
International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 1, 90–99
Research Article | 02-November-2017
need any synchronization at the local nodes it uses compress once and stamp locally without any threshold such as application specific calibration values (30oC) and the summarization can be application independent making it more a sensor network reliability index and using it independent of the actual measured values.
Vasanth Iyer,
Garimella Ram Murthy,
M.B. Srinivas
International Journal on Smart Sensing and Intelligent Systems, Volume 1 , ISSUE 4, 912–921