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

"Three-Dimensional version research and Processing" specializes in 5 sizzling learn instructions in 3D version research and processing in computing device technology, i.e., on compression, characteristic extraction, content-based retrieval, irreversible watermarking and reversible watermarking. The publication is predicated on a variety of new content material, systematic and theoretical, and entirely displays the cutting-edge in 3D version research and processing applied sciences. This ebook is meant for researchers, engineers and graduate scholars operating in 3D version research and processing. Faxin Yu is an affiliate Professor on the university 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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Extra resources for Three-Dimensional Model Analysis and Processing (Advanced Topics in Science and Technology in China)

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3 Overview of 3D Model Analysis and Processing 3D models are the fourth type of digital media following audio data, images and video data. Compared to the first three kinds of digital media, the 3D model has its own characteristics: (1) no data sequence; (2) no specific sampling rate; (3) non-unique description; (4) containing both the geometric information and topological information; (5) Both geometry and topology information can be modified easily. Therefore, the analysis and processing techniques for 3D models are very different from those for other media.

As this process mimics the scan-conversion process that pixelizes (rasterizes) 2D geometric objects, it is also referred to as 3D scan conversion. In 2D rasterization, the pixels are directly drawn onto the screen to be visualized and filtering is applied to reduce the aliasing artifacts. However, the voxelization process does not render the voxels but merely generates a database of the discrete digitization of the continuous object. Texture mapping [10] in computer graphics generally refers to the process of mapping a 2D image onto geometric primitives.

We create a polygon cube using the Maya software as shown in Fig. 5. obj”. mll” in the Plug-in Manager. obj”, we have the following codes: # The units used in this file are centimeters. 2 Concepts and Descriptions of 3D Models 29 f 2/2/17 8/11/18 6/12/19 4/4/20 f 7/13/21 1/1/22 3/3/23 5/14/24 Fig. 5. 7 The polygon with holes created by the Maya software OFF File Format Object file format (OFF) files are used to represent the geometry of a model by specifying the polygons of the model’s surface.

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