scholarly journals Research on Three-dimensional Modeling Method of High Speed Flying Object Based on Image

Author(s):  
Sen ZHANG ◽  
Ting-ting YANG ◽  
Yuan-heng ZHANG ◽  
Chao JIN ◽  
Long-tao FAN
2021 ◽  
Author(s):  
Alkan çağlı ◽  
M. Yılmaz

Abstract In this study, the use of three-dimensional modeling method was tested in taking some body measurements in camels with a practical method and was compared with other measurement methods. As the animal material of the study, 12 single humped dromedary female camels and 14 double humped Camelus dromedarius X Camelus bactrianus: F1 male camels, totally 26 camels, were used in three camel farms in Incirliova district of Aydın province. The body measurements taken from each animal by using different three methods, namely by Manuel Method (MM), by Photography Method (PM), and by Three Dimensional Modeling Method (3D) were the Cidago Height (CH), the Back Height (BH), the Rump Height (RH), the Body Length (BL), the Brisket Height (BRH), the Abdominal Height (AH), the Shoulder Width (SW) and the Rump Width (RW) and these values were compared with each other. As a result of this study, the mean values of MM and 3D measurement values were very close to each other and the difference between them was found to be statistically insignificant. (P<0.05). The difference between the means of PM and MM/3D measurement values was found to be significant. (P <0.05). In the measurements taken by MM, 3D, PM methods in male camels, the values obtained by MM and 3D methods for CH, BH, RH, BRH, AH, BL, and SW were very close to each other and the differences between them were found insignificant statistically (p < 0.05). On the determined regression graph, a linear was found between MM and 3D measurement values. As a result of this study, it has been determined that the 3D modeling method can be used as a remote and more practical method in determining the morphological features of large-scale animals such as camels more reliably, more easily and more practically.


2014 ◽  
Vol 8 (1) ◽  
pp. 323-329 ◽  
Author(s):  
Wang Yujian ◽  
Tan Shaowei ◽  
Dong Weiwei ◽  
Jing Wenpeng

With studying deeply of the three-dimensional modeling method, this paper proposed a hybrid data model which based on Octree,the four fork tree and NURBS. The characteristic of fast convergence of Octree is used to segment the 3D entity. Describe the irregular surface of entity by NURBS, and restructure the local mesh surface. The model uses the mixture data structure of Octree and four fork tree to restructure mesh surface gradually. The storage structure is the Octree structure type; establish Hash table based on octal prefix code. Finally, an experimental model system is designed by using OpenGL. The feasibility and effectiveness of the algorithm has been verified.


China Foundry ◽  
2019 ◽  
Vol 16 (4) ◽  
pp. 248-255 ◽  
Author(s):  
Ming-si Qi ◽  
Wei Zhang ◽  
Jun-yuan Wang ◽  
Guang-ming Ren ◽  
Yi-ping Yin ◽  
...  

Museum Worlds ◽  
2016 ◽  
Vol 4 (1) ◽  
pp. 63-77 ◽  
Author(s):  
Jane-Heloise Nancarrow

ABSTRACTThree-dimensional modeling and printing of museum artifacts have a growing role in public engagement and teaching—introducing new cultural heritage stakeholders and potentially allowing more democratic access to museum collections. This destabilizes traditional relationships between museums, collections, researchers, teachers and students, while offering dynamic new ways of experiencing objects of the past. Museum events and partnerships such as the Metropolitan Museum of Art “Hackathon”; the MicroPasts initiative; and Sketchfab for Museums and Cultural Heritage, encourage non-traditional methods of crowd-sourcing and software collaboration outside the heritage sector. The wider distribution properties of digitized museum artifacts also have repercussions for object-based and kinesthetic learning at all levels, as well as for experiential and culturally sensitive aspects of indigenous heritage. This article follows the existing workflow from model creation to classroom: considering the processes, problems, and applications of emerging digital visualization technologies from both a museum and pedagogical perspective.


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