A High-Accuracy, Cost-Effective People Counting Solution Based on Visual Depth Data

2020 ◽  
Author(s):  
Seyed Ali Hosseini Shamoushaki ◽  
Mohammad Mostafa Talebi ◽  
Amineh Mazandarani ◽  
S. Jafar Hosseini
Keyword(s):  
Cost Effective ◽  
High Accuracy ◽  
Visual Depth ◽  
People Counting ◽  
Depth Data

Cost Effective Swath Bathymetry

2001 ◽  
Vol 35 (4) ◽  
pp. 33-45 ◽  
Author(s):  
Peter Hogarth
Keyword(s):  
Processing Time ◽  
Cost Effective ◽  
High Accuracy ◽  
High Coverage ◽  
Swath Bathymetry ◽  
World Survey ◽  
Set Up ◽  
Very High ◽  
Harbor Area ◽  
Wide Swath

Between 23rd and 25th July 2001 GeoSwath, a high specification shallow water wide swath bathymetry system, was used to survey the entire Portsmouth NH Harbor area. This paper deals with the results of this survey, illustrating the potential for significant reductions in the high costs, which have prevented widespread proliferation of Swath Bathymetry systems to date. Data, including a complete DTM gridded to 1 m resolution, will be presented and discussed in detail. These results show that the system is very easy to set up and use, requires greatly reduced boat and processing time, whilst offering high accuracy and very high coverage and resolution when used in a real-world survey of a dynamic harbor environment.

A New and High-Accuracy People Counting Algorithm

2011 ◽  
Vol 55-57 ◽  
pp. 132-137
Author(s):  
Tao Hu ◽  
Hao Jia Luo ◽  
Ting Wang ◽  
Li Zhu
Keyword(s):  
Time Complexity ◽  
High Accuracy ◽  
Two Dimensional ◽  
People Counting ◽  
The People ◽  
Average Proportion ◽  
Counting Algorithms ◽  
Background Image ◽  
Counting Algorithm

The people counting algorithms are widely applied in many areas. The algorithms may have lower counting accuracy or higher time complexity. To improve that, a new and high-accuracy people counting algorithm is proposed in this paper. It analyzes a background image and series population original images to calculate an average proportion for one person and create a two-dimensional table. Then it uses the average proportion and the two-dimensional table to count the number of people in test images. And two thresholds are adopted to regulate accuracy in counting.

Cost-Effective, High-Accuracy Inertial Navigation

Navigation ◽  
1989 ◽  
Vol 36 (2) ◽  
pp. 157-172 ◽  
Author(s):  
A. MATTHEWS ◽  
H. WELTER
Keyword(s):  
Inertial Navigation ◽  
Cost Effective ◽  
High Accuracy

scholarly journals UAV Monitoring of Excavation Works

2020 ◽  
Author(s):  
Roman Shults ◽  
Khaini-Kamal Kassymkanova ◽  
Shugyla Burlibayeva ◽  
Daria Skopinova ◽  
Roman Demianenko ◽  
...  
Keyword(s):  
Data Analysis ◽  
3D Models ◽  
High Accuracy ◽  
Process Data ◽  
Total Station ◽  
Depth Data ◽  
Data Source ◽  
Geodetic Control ◽  
Construction Works

The first stage of any construction is carrying out excavation works. These works are high-priced and timeconsuming. Mostly, for geodetic control of the works, the surveyors are using total stations and GNSS equipment. Last decade, UAV technology was a breakthrough in the geodetic technologies market. One of the possible applications of UAV is the monitoring of excavation works. In the article, the opportunities and accuracy of UAV data while performing the excavation works were studied. The surveying of earth volume in the middle of construction works was made using DJI Phantom 4 UAV. The data were being processed using two photogrammetric software: Agisoft Metashape and PhotoModeler Premium. For comparison, the surveying also was made using a conventional total station. For each data source, the 3D models were generated. The obtained models were compared with each other in CloudCompare software. The comparison revealed the high accuracy of UAV data that satisfies customer’s requirements. For the case of two software comparing, it is better to process data using PhotoModeler. The PhotoModeler software allows performing in-depth data analysis and blunders searching.

Laser-Cutting and Welding of DDG-51 Structural Shapes

2000 ◽  
Vol 16 (04) ◽  
pp. 183-192
Author(s):  
Paul A. Blomquist ◽  
David L. Forrest
Keyword(s):  
Laser Cutting ◽  
High Speed ◽  
Cost Benefit ◽  
Cost Effective ◽  
High Accuracy ◽  
Purchase Price ◽  
Benefit Ratio ◽  
Cost Effective Approach ◽  
Cost Benefit Ratio ◽  
Hot Rolled

The application of high-power industrial lasers to the production of structural shapes for shipbuilding has been analyzed. Requirements for T-and I-sections used in a DDG-51 class vessel were used to evaluate a cost/benefit ratio for fabricating shapes vice purchasing hot rolled sections. Results of the study indicate that fabricated shapes offer significant tangible and intangible benefits to the shipbuilder, and that the entire shipset of T's and I's can be cut from plate and welded to actual net shape for less cost than the purchase price of stock lengths of hot-rolled shapes. Savings from elimination of complex layout and cutting operations further add to the benefit. The high speed and high accuracy of modern industrial lasers makes possible an efficient, flexible, and cost-effective approach to the production of structural shapes. A further benefit is the potential to design a ship with structurals having the same depth, vastly improving the speed of outfitting such as the installation of piping, wireways and vent runs.

Hydrogeformte Strömungsprofile aus Stahlblech/Hydroforming of airfoils using bent steel sheets - Product design and technological-economical selection of sheet metal forming processes in practice

2015 ◽  
Vol 105 (10) ◽  
pp. 744-746
Author(s):  
D. Landgrebe ◽  
M. Pröhl
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Cost Effective ◽  
High Accuracy ◽  
Process Chain ◽  
Steel Sheets ◽  
Geometrical Complexity ◽  
Small Wind Turbines ◽  
Selection Of

Innerhalb des Projekts „HyBlade“ wurde ein Flügelprofil aus Stahlblech entwickelt. Zum Einsatz kommen bewährte Fertigungstechniken wie das Abkanten einer Vorform und das Hydroforming zum Kalibrieren der finalen Geometrie. Das Verfahren stellt eine hohe Maßhaltigkeit sicher – die wesentliche Voraussetzung für gute Aerodynamik und hohe Energieausbeute von Windkraftanlagen. Die wirtschaftliche Prozesskette gestattet darüber hinaus auch die Herstellung größerer Blätter mit weitaus komplexeren Geometrien.   In the HyBlade project, a sheet metal based airfoil used for blades of small wind turbines has been developed. Well known forming techniques have been used to produce a bent preform that is finally calibrated via hydrofoming. This manufacturing technology ensures a high accuracy of the blade, resulting in good aerodynamic conditions and energy efficiency. The very cost-effective process chain furthermore offers the possibility to form even larger blades with a higher geometrical complexity.

Sign in / Sign up

Export Citation Format

Share Document