Research of Wheat Precision Seeding Test System Based on Image Processing

2011 ◽  
Vol 311-313 ◽  
pp. 1559-1563
Author(s):  
Hai Bo Lin ◽  
Shu Liang Dong ◽  
Yan Qiu ◽  
Chui Jie Yi
Keyword(s):  
Image Processing ◽  
High Efficiency ◽  
Test System ◽  
Structure Design ◽  
Design Parameters ◽  
Image Acquisition System ◽  
Processing Techniques ◽  
Seed Identification ◽  
Space Measurement ◽  
Selection Of

Wheat precision seeding test system is designed to develop a measurement device of wheat precision seeding with high efficiency and precision. The wheat seeds are falling from the seed sowing device to the conveyer belt. Using image processing techniques, the system gets the pictures of seeds on the belt. Then these pictures are processed and analyzed to calculate the qualified rate, reseeding rate and leakage sowing rate, etc. This paper introduces the whole structure, design parameters of the system, the hardware and software of the image acquisition system. Through selection of a proper threshold, the method of seed identification and seed-space measurement are given in this paper.

scholarly journals Image Processing Techniques for Analysis of Satellite Images for Historical Maps Classification—An Overview

2020 ◽  
Vol 10 (12) ◽  
pp. 4207 ◽  
Author(s):  
Anju Asokan ◽  
J. Anitha ◽  
Monica Ciobanu ◽  
Andrei Gabor ◽  
Antoanela Naaji ◽  
...  
Keyword(s):  
Image Processing ◽  
Satellite Images ◽  
Satellite Image ◽  
Historical Maps ◽  
Satellite Imaging ◽  
Image Processing Techniques ◽  
Innovative Solutions ◽  
Satellite Image Processing ◽  
Processing Techniques ◽  
Selection Of

Historical maps classification has become an important application in today’s scenario of everchanging land boundaries. Historical map changes include the change in boundaries of cities/states, vegetation regions, water bodies and so forth. Change detection in these regions are mainly carried out via satellite images. Hence, an extensive knowledge on satellite image processing is necessary for historical map classification applications. An exhaustive analysis on the merits and demerits of many satellite image processing methods are discussed in this paper. Though several computational methods are available, different methods perform differently for the various satellite image processing applications. Wrong selection of methods will lead to inferior results for a specific application. This work highlights the methods and the suitable satellite imaging methods associated with these applications. Several comparative analyses are also performed in this work to show the suitability of several methods. This work will help support the selection of innovative solutions for the different problems associated with satellite image processing applications.

scholarly journals Simplified 2D Skin Lattice Models for Multi-Axial Camber Morphing Wing Aircraft

Aerospace ◽  
2019 ◽  
Vol 6 (8) ◽  
pp. 90
Author(s):  
Bashir Alsaidi ◽  
Woong Yeol Joe ◽  
Muhammad Akbar
Keyword(s):  
Structural Strength ◽  
Lattice Models ◽  
Structure Design ◽  
Design Stage ◽  
Design Parameters ◽  
Main Theme ◽  
Morphing Wing ◽  
Morphing Wings ◽  
Plate Models ◽  
Selection Of

Conventional fixed wing aircraft require a selection of certain thickness of skin material that guarantees structural strength for aerodynamic loadings in various flight modes. However, skin structures of morphing wings are expected to be flexible as well as stiff to structural and coupled aerodynamic loadings from geometry change. Many works in the design of skin structures for morphing wings consider only geometric compliance. Among many morphing classifications, we consider camber rate change as airfoil morphing that changes its rate of the airfoil that induces warping, twisting, and bending in multi-axial directions, which makes compliant skin design for morphing a challenging task. It is desired to design a 3D skin structure for a morphing wing; however, it is a computationally challenging task in the design stage to optimize the design parameters. Therefore, it is of interest to establish the structure design process in rapid approaches. As a first step, the main theme of this study is to numerically validate and suggest simplified 2D plate models that fully represents multi-axial 3D camber morphing. In addition to that, the authors show the usage of lattice structures for the 2D plate models’ skin that will lead to on-demand design of advanced structure through the modification of selected structure.

A New Measurement System of Yarn Appearance Based on Machine Vision

2014 ◽  
Vol 945-949 ◽  
pp. 1810-1814
Author(s):  
Jun Juan Li ◽  
Chen Wang ◽  
Wen Xiao Tu ◽  
Bao Qi Zuo
Keyword(s):  
Image Processing ◽  
Machine Vision ◽  
Measurement System ◽  
Coefficient Of Variation ◽  
Suitable Method ◽  
Main Body ◽  
Image Processing Techniques ◽  
Image Acquisition System ◽  
Processing Techniques ◽  
Morphological Opening

In this paper, a new yarn appearance measurement system based on machine vision is introduced. The yarn images are continuously captured by image acquisition system. To extract the main body of the yarn accurately, the yarn images are processed sequentially with threshold segmentation and morphological opening operation. Then the coefficient of variation (CV value) of diameter is calculated to characterize the yarn evenness. The measurement process achieves result (CV value) which can be compared with USTER evenness tester by image processing techniques. By comparing different methods which use different algorithms, a suitable method is chosen to be used in this new measurement system. Then a more accurate, more efficient and faster measurement system will meet requirements in the future.

Design and Simulation of Missile-Borne Measuring Device Shell

2012 ◽  
Vol 152-154 ◽  
pp. 1258-1261
Author(s):  
Li Long Gao ◽  
Chang An Di ◽  
De Ren Kong ◽  
Xin Liu
Keyword(s):  
Test System ◽  
Structure Design ◽  
Chamber Pressure ◽  
Design Parameters ◽  
Strength Analysis ◽  
Test Environment ◽  
Design Strength ◽  
Measuring Device ◽  
Simulation Calculation ◽  
G Value

Missile-borne measuring device needs to be installed in the missile body. When projectiles running in trajectory, they are in a high temperature, high pressure, high g value of the overload conditions, therefore whether reasonable of the mechanical shell design or not has important implications for the entire test system anti-overloading performance. According to the test environment characteristics and compatibility with the principles of the PCB, Mechanical protection shell takes cylindrical structure. According to strength theory, calculates the design parameters of the cylinder and make structure design、strength analysis、limited simulation calculation. Simulation results show that, the strength of missile-borne measuring device designed meet the requirements of gun in high chamber pressure when fired.

scholarly journals Pre-trained classification of scalp conditions using image processing

2020 ◽  
Vol 20 (1) ◽  
pp. 138
Author(s):  
Shafaf Ibrahim ◽  
Zarith Azuren Noor Azmy ◽  
Nur Nabilah Abu Mangshor ◽  
Nurbaity Sabri ◽  
Ahmad Firdaus Ahmad Fadzil ◽  
...  
Keyword(s):  
Image Processing ◽  
Region Of Interest ◽  
Conventional Technique ◽  
Input Image ◽  
Support Vector ◽  
Suitable Treatment ◽  
New Treatment ◽  
Processing Techniques ◽  
Selection Of

<span>Scalp problems may occur due to the miscellaneous factor, which includes genetics, stress, abuse and hair products. The conventional technique for scalp and hair treatment involves high operational cost and complicated diagnosis. Besides, it is becoming progressively important for the payer to investigate the value of new treatment selection in the management of a specific scalp problem. As they are generally expensive and inconvenient, there is an increasing need for an affordable and convenient way of monitoring scalp conditions. Thus, this paper presents a study of pre-trained classification of scalp conditions using image processing techniques. Initially, the scalp image went through the pre-processing such as image enhancement and greyscale conversion. Next, three features of color, texture, and shape were extracted from each input image, and stored in a Region of Interest (ROI) table. The knowledge of the values of the pre-trained features is used as a reference in the classification process subsequently. A technique of Support Vector Machine (SVM) is employed to classify the three types of scalp conditions which are alopecia areata (AA), dandruff and normal. A total of 120 images of the scalp conditions were tested. The classification of scalp conditions indicated a good performance of 85% accuracy. It is expected that the outcome of this study may automatically classify the scalp condition, and may assist the user on a selection of suitable treatment available.</span>

scholarly journals Prioritizing Design Parameters for Stepped Chutes and Shear Stress Distribution

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1155
Author(s):  
Khosro Morovati ◽  
Hosein Ghaedi ◽  
Fuqiang Tian ◽  
Saeed Akbari ◽  
Christopher Homer
Keyword(s):  
Shear Stress ◽  
Stress Distribution ◽  
Regression Models ◽  
High Efficiency ◽  
Maximum Velocity ◽  
Structure Design ◽  
Shear Stress Distribution ◽  
Longitudinal Distribution ◽  
Design Parameters ◽  
The Impact

Stepped chutes offer high efficiency in decreasing flow velocity due to roughness; however, negative impacts may still be experienced by the receiving water body into downstream. These effects might be mitigated if geometric and hydraulic parameters governing the structure are well addressed. Herein, five influential parameters were developed, i.e., longitudinal slope S (S = tan θ), discharge (Q), pool height above steps (hp), chute width (W), and chute height (H), employing a three dimensional (3D) numerical model. Through 600 simulations, two regression models were developed for predicting depth-averaged velocity at the last step Vd (m/s) and critical length Lc (cm) at the downstream where the maximum velocity occurs, using response surface methodology (RSM) based on the mixed-level full factorial design. The prediction data obtained by developed regression models were agreeable with actual data with coefficient determination (R2) of about 0.95, highlighting the accuracy and ability of the models for the prediction of Vd and Lc. Additionally, the analysis of variance (ANOVA) was used to prioritize the impact of the studied parameters on Vd and Lc. Results highlighted that among geometric parameters, W and S had a significant influence on Vd and Lc; however, the impact of W was more pronounced. Using a regression model for Lc, a cross section was obtained, and the shear stress distribution of the downstream was compared with that of the last step and sidewalls. The shear stress patterns showed that the maximum value shifted from the side walls to the downstream between the lower and higher slopes. Further, the longitudinal distribution of shear stress at the downstream revealed that geometric and hydraulic characteristics played a negligible role in the changing pattern of shear stress. The results of this study reveal the dynamic behavior of the given structure where different geometric options are available for structure design.

Tennis Transmitter Design and Parameter Optimization

2013 ◽  
Vol 401-403 ◽  
pp. 304-307
Author(s):  
Xiang Hui Gong
Keyword(s):  
Material Design ◽  
Structure Design ◽  
Design Parameters ◽  
Connecting Rod ◽  
Design Choice ◽  
Round Ball ◽  
Transmitter Design ◽  
And Control ◽  
Motor Sports ◽  
Selection Of

Design of tennis transmitter design parameters, structure design, choice of institution, etc., the transmitter in accordance with the standards of the international tennis federation (ITF) to carry on the design. Design and institutional selection includes the realization of the crank connecting rod mechanism and control motor sports, ball tray and ball under the control of the speed of tennis, crowded ball wheel speed regulating motor selection, crowded round ball structure design and checking calculation, the design and checking calculation of shaft, casing and bracket material design and the selection, selection of walking wheel, etc.

Optimization Design and Application of Sluice Pier Sliding Formwork

2013 ◽  
Vol 671-674 ◽  
pp. 2005-2010
Author(s):  
Jun Xing ◽  
Hong Liang Cai ◽  
Jian Bing Cheng
Keyword(s):  
Optimization Design ◽  
Simulated Annealing Algorithm ◽  
High Efficiency ◽  
Low Cost ◽  
Least Square Method ◽  
Structure Design ◽  
Least Square ◽  
Advanced Technology ◽  
Design Parameters ◽  
Best Value

The sliding formwork, combining high efficiency and low cost, is a kind of advanced technology in the construction of sluice pier of hydropower projects. Number of jacks and elevating shelf spacing are two important parameters in the structure design of sliding formwork, the mathematical model of the relationship between manufacture costs and jack number, spacing between the elevating shelf was established using polynomial least square method, the best value of jack number and spacing between the elevating shelf were calculated by using the simulated annealing algorithm, thereby optimized the design parameters of sliding formwork structure, whilst expatiated the technology of installing, debugging, sliding and disassembly of sliding formwork, put forward the feasible methods for solving the problems that often appeared in the construction of sliding formwork, summed up the merits of sliding formwork, analyzed the technology and economical benefit of sliding formwork

scholarly journals Method for estimating leaf coverage in strawberry plants using digital image processing

2016 ◽  
Vol 20 (8) ◽  
pp. 716-721
Author(s):  
Juan D. Sandino ◽  
Olga L. Ramos-Sandoval ◽  
Darío Amaya-Hurtado
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Detection Threshold ◽  
Crop Evolution ◽  
Contour Detection ◽  
Evolution Analysis ◽  
Image Acquisition System ◽  
Processing Techniques ◽  
Non Destructive

ABSTRACT In farming the measurement of leaf coverage is considered as an exhaustive task for the researchers due to most of the time they do not have access to the adequate tool for this purpose. A new algorithm, implemented in this investigation, allows to estimate by means of a non-destructive method, the leaf coverage value of strawberry plants (fragaria x ananassa) of the cultivar Albion in the Cajicá region, Colombia, by using digital image processing techniques ( DPI). The DPI based technique includes the smoothing, dilatation, contour detection, threshold and edges detection operations. The image acquisition system was conducted by means of photographic images in plants in study, directly from the beds of the crop and the captures were subsequently processed through the proposed algorithm. The obtained results show the measured values of the plants leaf coverage in cm2, with up to 90% of accuracy. This system gives an important contribution to the crop evolution analysis by computational tools, making easier the monitoring work.

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