By Mingquan Zhou
"Digital renovation expertise for Cultural history" discusses the know-how and strategies in electronic upkeep of cultural history. It covers issues in 5 significant parts: Digitization of cultural historical past; electronic administration within the cultural history protection; recovery recommendations for inflexible good relics; recovery suggestions for work; electronic museum. additionally it is software examples for electronic maintenance of cultural heritage.
The e-book is meant for researchers, complex undergraduate and graduate scholars in special effects and snapshot Processing in addition to Cultural history preservation.
Mingquan Zhou is a professor on the collage of data technological know-how and expertise, Beijing general collage, China. Guohua Geng is a professor on the collage of data technological know-how and know-how, Northwest collage, Xi'an, China. Zhongke Wu is a professor on the collage of knowledge technological know-how and expertise, Beijing common collage, China.
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2) Generate the deformation mesh. There are two ways to generate the deformation mesh: One is to parameterize the editing area onto a rectangle and uniformly sample the rectangular region. Next, take the sampling points as the control points of a generated control mesh. The control mesh is often obtained by parametric surfaces (such as B-spline surface) or the constructed control mesh with a defining mesh template, and is mapped to the deformation region. Another way is first to select control points in the deformation region and second by fitting the control points under constraints (such as 30 2 Fundamentals of Digital Preservation of Cultural Heritage radial basis function) the surface can be deformed directly.
The first is to establish a correspondence between the source model and the target model. The second is interpolating the correspondent points. Establishing correspondence is the key and difficult issue, and the interpolation can use linear interpolation or Hermite interpolation scheme. Unlike the polygon mesh model, large deformation operations of point cloud model can inevitably cause cracks. Thus, dynamic resampling (upsampling) during the deformation process is necessary. For example, moving least squares method could be used to implement dynamically resampling in order to fill the cracks.
2) Identify regions of interest. After the reference curve has been mapped to three-dimensional space, fuzzy segmentation algorithm (fuzzy decomposition) is used to divide the model into three parts: (a) a static part, which does not change during the deformation process; (b) a part of interest, which is covered by the reference curve coverage and to be implemented in the deformation algorithm; (c) a rigid part, which is to be rigidly moved and kept in connection with the part of interest. (3) Calculate the angle of rotation.