3D Reconstruction of Typhoon and Thunderstorm Cloud Top Using Airborne Camera 

2021 ◽  
Author(s):  
Meryl Algodon ◽  
Yukihiro Takahashi ◽  
Mitsuteru Sato ◽  
Hisayuki Kubota ◽  
Tetsuro Ishida ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Brightness Temperature ◽  
3D Model ◽  
Science And Technology ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Infrared Band ◽  
Altitude Distribution ◽  
Distribution Ranges

<p>Typhoons are extreme weather phenomena that inflict damages and casualties around globe. These phenomena are difficult to study because of their chaotic behaviour but the capacity to measure their intensity can help mitigate the hazards that they bring. In the past, several attempts have been done to relate typhoon's intensity with the structural evolution of its eye. This suggests the possible relation between the typhoon intensity with typhoon eye altitude. In this research, we visualize Typhoon Trami’s structure by reconstructing the three-dimensional model inside its eye and analyze the information of its cloud top altitude. An experiment was conducted under the SATREPS/ULAT project (SATREPS: Science and Technology Research Partnership for Sustainable Development, ULAT: Understanding Lightning and Thunderstorm) where images of Typhoon Trami were taken from an aircraft last September 26, 2018. Aircraft images were used to reconstruct the 3D model inside the typhoon eye because they provide closer views of the typhoon than that of geostationary satellite images, making it easier to reconstruct a 3D model. The 3D reconstruction generated covers 43 km region of the typhoon eye at 20.2 m/pixel spatial resolution. Three cross-sections of the 3D model were analyzed, and the resulting altitude distribution was compared with the cloud-top altitude estimated by mapping the brightness temperature of the Himawari Thermal Infrared Band 13 with cloud-top height as measured by NOAA sonde data. From the 3D model, the altitude distribution ranges from 5.3 km to 14.3 km which corresponds with the altitude estimated from the brightness temperature of 6.5 km to 14.3 km. However, regions of altitude difference can also be observed between the two methods. This study shows that a three-dimensional model could be a good mode of typhoon visualization as it shows a more detailed typhoon structure such as the stairstep structures that was detected at some regions within the typhoon eye. This research was supported by SATREPS, funded by Japan Science and Technology Agency (JST) / Japan International Cooperation Agency (JICA).</p>

scholarly journals Influence of Geometric Features Associativity of CAD Class Models on the Process of Their Updating – Comparative Analysis

2021 ◽  
Author(s):  
Grzegorz Świaczny
Keyword(s):  
3D Model ◽  
Three Dimensional ◽  
Optimal Solution ◽  
3D Models ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Initial Design ◽  
The Individual ◽  
Class Models ◽  
Positive Effect

This article deals with the topic of one of the most important features of modern CAx class systems – associativity. The term refers to the ability to form relations (links) between two or more objects (in terms of their selected features), and with the consequence creating an associative (linked) three-dimensional model. The author pays special attention to the very process of creating relations between objects, as it has a key impact on the structural stability of CAD class models, and thus on their susceptibility to possible modifications. To show that not all associativity brings a positive effect, the author presents two examples of its implementation. In order to emphasize the influence of the method of linking individual elements, both examples are based on the same 3D model – a thin-walled part with a positioning pin. That means the geometric form of the default part is the same, whereas only relations of the individual objects of the 3D model change. In the first scenario, correctly defined relations between objects make that the positioning pin offset does not affect the initial design conditions. The second scenario shows an incorrect implementation of associativity, as a result of which the same operation of positioning pin offset gives non-compliance with the initial design conditions and with the consequence an undesirable change in its geometry. The article is an attempt to draw attention to the fact that the associative structure of 3D models is not always equal to the optimal solution. Only the well-thought-out nature of associativity allows to use all its advantages.

scholarly journals Modeling in AUTOCAD for bachelors

2021 ◽  
pp. 25-28
Author(s):  
Л.В. Карпюк ◽  
Н.О. Давіденко
Keyword(s):  
3D Model ◽  
Three Dimensional ◽  
Model Space ◽  
Educational Process ◽  
Point Of View ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Three Dimensional Objects ◽  
Graphic Editor

The article discusses the methods of using the AutoCad graphic editor for creating three-dimensional objects. The possibilities of three-dimensional modeling in the AutoCad graphic editor for optimizing the educational process of bachelors of technical specialties are also considered. The article analyzes the best ways to create mechanical engineering drawings.The most developed software tool for the production of design documentation is AutoCAD - a universal graphic design system. Creating models of any complexity in space by using this graphic editor, the user will be able to see their relative position, estimate the distance between them. The model can be freely moved in space, viewing many options. The ability to control the point of view allows to conveniently select the view of the 3D model that is being developed. Zooming, panning in real time with the ability to freely rotate the camera around the model provide the ability to quickly view objects from any point of view. The article provides examples of choosing the most optimal option for creating a three-dimensional model. The traditional way to create a 3D model drawing is to make 2D views of the model. When creating a flat drawing, there is a possibility of error when making projections, since they are created independently from each other and consist of several images. It is rather difficult to represent an object in space from a flat drawing. At present, modern software graphic editors are aimed at creating three-dimensional models that allow to create realistic models and, on their basis, get two-dimensional projections. Graphic editor AutoCad allows to create three-dimensional objects based on standard commands, in the form of a cylinder, cone, box, torus, etc., when editing which you can get the desired shapes. After creating a three-dimensional model, the user can get its two-dimensional projections not only on the main planes, but also on any plane at will. The 3D modeling method allows you to create a complex drawing with any number of images based on a 3D model. There are ways to create 2D plane drawings from a 3D model and the ability to edit ready-made designs that can be inserted from model space into paper space. Editing takes place by changing the parameters of a 3D object in model space, and these changes are automatically reflected in paper space. This method allows us to use the tools to quickly create a system of 3-4 linked views for a 3D AutoCad model.

scholarly journals Three-Dimensional Model Extraction and Parameter Measurement of Cerebral Hemangioma Based on Mimics

2022 ◽  
Vol 2160 (1) ◽  
pp. 012012
Author(s):  
An Qu ◽  
Tianmin Guan ◽  
Tianxiang Gan ◽  
Yuanyuan Li ◽  
Zhuang Lin ◽  
...  
Keyword(s):  
Therapeutic Effect ◽  
Cerebral Angiography ◽  
Structural Design ◽  
3D Model ◽  
Three Dimensional ◽  
The Body ◽  
Model Reconstruction ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
3D Model Reconstruction

Abstract In this paper, Mimics is using to reconstruct the 3D model of hemangioma from 2D cerebral angiography images. The process of 3D model reconstruction is formulated. The hemangioma model is extracted and the parameters of the hemangioma are measured, which provided a model basis for the structural design of the spring coil. The shape and structure of the coil are very important for the therapeutic effect. During the treatment, the coil is implanted into the hemangioma from outside the body through a catheter.

scholarly journals Reconstruction of an architectural object. Case study: Citadel fort No. 33 “Krakus” in Krakow

2018 ◽  
Vol 63 ◽  
pp. 00010
Author(s):  
Izabela Piech ◽  
Boguslawa Kwoczynska ◽  
Artur Ciszewski
Keyword(s):  
Point Cloud ◽  
3D Model ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Field Work ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Laser Measurements ◽  
The University

The aim of the study was to recreate, in the form of a 3D model, the Citadel fort No. 33 “Krakus” in Krakow. The data on the basis of which the three-dimensional model was made were obtained using a Leica ScanStation P40 terrestrial laser scanner, which is owned by the Faculty of Environmental Engineering and Geodesy of the University of Agriculture Hugona Kollataj in Krakow. The scope of field work included performing laser measurements, and then processing the point cloud in the Leica Cyclone 3D program and creating a full architectural model in SketchUp 2016.

scholarly journals Designing a biocompatible ear implant of a man with help of modern information technologies

2018 ◽  
pp. 184-193
Author(s):  
Olena Savielieva ◽  
Leonid Orel ◽  
Andrey Pavlyshko ◽  
Veronika Rutska
Keyword(s):  
Information Technologies ◽  
3D Model ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
3D Scanner ◽  
Correct Form ◽  
Quality Of Medical Care ◽  
Human Ear

The article is devoted to designing a biocompatible human ear implant with the further possibility of its bioprinting. The paper considers 3D technologies used in medicine, the latest trends in the development of 3D bioprinters. The methods of modeling the human ear using the Artec Spider 3D scanner and the patient's digital image are considered. Using these methods, 3D modeling in the software package Autodesk 3ds Max and a solid 3D model of the human ear. 3D-bioprinting is an offensive step for the 3D-friend, which is widely to be visualized in medical. Through the rapid creation of high-precision products, taking into account the specifics of anatomy and pathology of the patient - improve the efficiency and quality of medical care. It will save a lot of lives and, possibly, in time, will improve the organs themselves. Getting a good three-dimensional model plays a big role in the correct form of the printed ears of the patient.

scholarly journals DESIGNING ENVIRONMENTALLY HAZARDOUS OBJECTS BY MEANS OF GEOGRAPHIC INFORMATION SYSTEMS

2021 ◽  
Vol 1 (161) ◽  
pp. 134-140
Author(s):  
O. Pomortseva
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Solid Waste ◽  
3D Model ◽  
Three Dimensional ◽  
Geographic Information ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Waste Landfill ◽  
Triangulation Network

The article deals with the current problem of solid waste disposal. Also the use of geoinformation technologies in the design of environmentally hazardous facilities. The sequence of actions in case of reconstruction of a land plot for the construction of a solid waste landfill is described in detail. It shows how you can use geographic information systems to speed up and better accomplish the task. The convenience of using geographic information systems when planning such tasks is obvious. It is advisable to use geographic information systems when planning environmentally hazardous facilities. This is due to the complex nature of the problem. This requires the involvement of additional spatial data. It is the geographic information system that will allow the use of all data in the complex based on the principle of their spatial position. You can also use data models to support the creation, validation, and correction of information. In a geographic information system, you can create a geodatabase. This will create a 3D model of a solid waste landfill. The 3D model allows you to better represent the terrain. Creation of a triangulation network will allow to correlate all layers created in the geodatabase. The triangulation network is created from 3D terrain points. It allows you to get a three-dimensional model of a high-altitude polygon. This provides many possibilities in the future. It will be possible to interpret 3D models with high-precision engineering systems. This allows you to carry out any geometric measurements, build sections and profiles, as well as monitor activities at the solid waste landfill. Based on these data, it is possible to measure the volumes of household waste, areas, the height of the landfill in terms of the height of the actual relief and the level of groundwater, the altitude characteristics of the landfill and slopes to compare them with the standard indicators. The three-dimensional model will make it possible to identify inconsistencies between the actual boundaries of the polygon with the cadastral boundaries of the site allocated for these purposes. With the help of geographic information systems, simplicity, speed and clarity in the formation of conclusions and decision-making will be provided.

The System Design and Parameterized Modeling of Juice Extractor Screw

2013 ◽  
Vol 397-400 ◽  
pp. 625-628
Author(s):  
Yu Qian Zhao ◽  
Xiu Feng Tan
Keyword(s):  
System Design ◽  
Traditional Method ◽  
3D Model ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Follow Up Study ◽  
Juice Yield ◽  
Parameterized Modeling

The ordinary screw designed in traditional method will increase the power consumption and decrease the juice yield in the process of squeeze. Presented the system design of juice extractor firstly, then used the UG software and dimension driving technology to construct the 3d model entity of the screw with variable pitches and diameters, followed by systems three-dimensional model. Finished the static analysis of the screw blade by ANSYS, completing a follow-up study of parameterized modeling.

scholarly journals DEVELOPMENT OF THE MODEL OF NOVOSIBIRSK AKADEMGORODOK SCIENCE AND TECHNOLOGY PARK USING 3DS MAX AND UNITY TOOLS

2020 ◽  
Vol 7 (1) ◽  
pp. 65-70
Author(s):  
Vadim A. Vasilev ◽  
Peter Yu. Bugakov
Keyword(s):  
Operating System ◽  
Science And Technology ◽  
Three Dimensional ◽  
Virtual Space ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
3D Objects ◽  
Technology Park ◽  
Desktop Computers ◽  
Science And Technology Park

The aim of tht work is to develop an interactive three-dimensional model of the territory of the Scientific and Technical Park of Novosibirsk Academgorodok. 3D objects were modeled in Autodesc 3ds Max; virtual space was implemented in Unity. In the process, textures and virtual materials for the implementation of photorealistic visualization of a three-dimensional scene were prepared. The model is compiled by Unity and is ready for use on desktop computers or laptops running Windows operating system. The software obtained can be used for virtual tours around the territory of the Scientific and Technical Park of Novosibirsk Academgorodok.

scholarly journals CREATING OF A THREE-DIMENSIONAL MODEL OF A ROOM WITH PRESENTATION IN THE MODE OF VIRTUAL REALITY

2019 ◽  
Vol 7 ◽  
pp. 107-115
Author(s):  
Alexandr Antonov ◽  
Dmitry Gogolev ◽  
Alexander Chernov
Keyword(s):  
Virtual Reality ◽  
Real Estate ◽  
3D Modeling ◽  
3D Model ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Real Estate Market ◽  
Flow Chart ◽  
Dimensional Model ◽  
Three Dimensional Model

The article presents the results of experimental studies on 3D-modeling of the room, using smartphones and integration with the Unigine Engine virtual reality platform. A flow chart for performing such work has been proposed. Assessment of the accuracy of the obtained 3D model for compliance with the requirements of the unified state real estate market and the proposed further direction of research on this issue.

Parametric Design System of Precision Forging Gear Die

2013 ◽  
Vol 712-715 ◽  
pp. 1153-1157
Author(s):  
Zheng Ru Wang ◽  
Qing Ping Zhang ◽  
Cheng Wang ◽  
Gao Xiang Cai
Keyword(s):  
3D Model ◽  
Parametric Design ◽  
Three Dimensional ◽  
Die Design ◽  
Design System ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Precision Forging ◽  
Wide Range

Powerful function in three-dimensional design, SolidWorks now has found a wide range of applications in industrial design. The parametric design system of precision forging gear die in this paper is developed with VB language based on SolidWorks environment. It is described in detail that the establishment of important components of gear die in the three-dimensional model, the relation between parameters of the interface and model, and parameters drive mechanism. Input parameters in windows of VB interface, are automatically calculated the precise parameters of the gear part and geometric dimensions of the important components of the gear die. According to the input arameters, the three-dimensional model of the gear die’s assembly drawings is generated on SolidWorks environment. The parametric design system is able to shorten the time for constructing the 3D model of the precision forging gear die and improve the quality of the die design.

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