Download Three-Dimensional Model Analysis and Processing by Faxin Yu, Zheming Lu, Hao Luo, Pinghui Wang PDF

By Faxin Yu, Zheming Lu, Hao Luo, Pinghui Wang

"Three-Dimensional version research and Processing" specializes in 5 scorching study instructions in 3D version research and processing in desktop technology, i.e., on compression, characteristic extraction, content-based retrieval, irreversible watermarking and reversible watermarking. The ebook is predicated on quite a lot of new content material, systematic and theoretical, and completely displays the cutting-edge in 3D version research and processing applied sciences. This e-book is meant for researchers, engineers and graduate scholars operating in 3D version research and processing. Faxin Yu is an affiliate Professor on the institution of Aeronautics and Astronautics, Zhejiang collage, China; either Zheming Lu and Pinghui Wang also are Professors there; Hao Luo is a Lecturer there.

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Advantages of the new approach include progressive transmission and encoding suitable for networked applications, interactive selection of any desired quality, and compression of the data by incremental and redundancy-free encoding. 3D model encryption is the process of transforming 3D model data (referred to as plaintext) using an algorithm (called cipher) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is the encrypted 3D model (in cryptography, referred to as ciphertext).

3) Mechanical-probe-based methods. They acquire the surface data by physical touch between the probe and the object. They require that the object hold a certain hardness. (4) Methods based on volume data restoration. They adopt a series of slicing images of the object to restore the 3D shape of the object. They are often used in medical departments with X-ray slicing images, CT images and MRT images. (5) Region-scanning-based methods. They obtain the position of each vertex in the space by estimating the distance between the measuring instrument and each point on the object surface.

The limit subdivision surface is the surface produced from this process being iteratively applied infinitely many times. In practical use, however, this algorithm is only applied a limited number of times. (3) Solid modeling. Solid modeling is the unambiguous representation of the solid parts of an object, which means models of solid objects suitable for computer processing. As we know, surface models are used extensively in automotive and consumer product design as well as entertainment animation, while wireframe models are ambiguous about solid volume.

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