scholarly journals Influences of imperfectness and inner constraints on an acoustic cloak with unideal pentamode materials

2019 ◽  
Vol 458 ◽  
pp. 62-73 ◽  
Author(s):  
Yi Chen ◽  
Xiaoning Liu ◽  
Gengkai Hu
Keyword(s):  
Inner Constraints

Inner Constraints for Planar Features

2012 ◽  
Vol 28 (141) ◽  
pp. 74-85 ◽  
Author(s):  
Derek D. Lichti ◽  
Jacky C. K. Chow
Keyword(s):  
Inner Constraints

Automatic Texture Mapping Algorithm for Plant Leaf Model

2011 ◽  
Vol 50-51 ◽  
pp. 659-662
Author(s):  
Yuan Di Zhao ◽  
Zhi Xun Su ◽  
Chun Jiang Zhao ◽  
Xin Yu Guo ◽  
Yan Qi Liu
Keyword(s):  
Texture Mapping ◽  
Feature Points ◽  
Plant Leaf ◽  
Mapping Algorithm ◽  
Matching Process ◽  
Curvature Information ◽  
Inner Constraints ◽  
Leaf Model ◽  
Boundary Mapping ◽  
Produce Plant

Texture mapping of plant leaf is a challenging task because of the shape diversity. Based on the barycentric mapping parameterization method, a novel algorithm is proposed. A suitable boundary mapping is computed by automatically extracting and matching the feature points on boundaries of the mesh and image. The matching process consists of two steps, which utilize the symmetry and curvature information respectively. Through iteratively minimizing a weighted energy, the inner constraints given by users in order to make the details clearer can be satisfied by the presented algorithm. Experiments show that this robust algorithm can produce plant leaves with fine texture details and increase the realism of the models.

Short-Term Realization of the ITRS with GNSS/SLR/VLBI/DORIS

2020 ◽  
Author(s):  
Changhui Xu ◽  
Yingyan Cheng ◽  
Yamin Dang
Keyword(s):  
Reference Frame ◽  
High Accuracy ◽  
Terrestrial Reference Frame ◽  
Short Term ◽  
Local Ties ◽  
Component Estimation ◽  
Geodetic Coordinate System ◽  
Inner Constraints

<p>International Terrestrial Reference Frame (ITRF) is the realization of the International Terrestrial Reference System (ITRS), which can be used for the variety applications such as earth research, surveying and mapping. 2000 National Geodetic Coordinate System (CGCS2000) has been established and widely applied as a long-term reference frame in China, however, a software for short-term reference frame establishment is also developed to provide high accuracy applications based on the fusion of GNSS/SLR/VLBI/DORIS. We analyzed the covariance from sinex format of the GNSS/SLR/VLBI/DORIS and the quality of local ties. The errors between the local ties and the ITRF2014 within 1cm was 89% in north direction and 85% east direction. We used inner constraints as the method of datum realization and Helmert variance component estimation for giving the weight of different space geodetic GNSS/SLR/VLBI/DORIS. Finaly, short-term terrestrial reference frame realization software can produce the weekly, monthly and annual frame products for high accuracy applications.</p>

scholarly journals Correction to: On inner constraints in plane circular arches

2019 ◽  
Vol 89 (10) ◽  
pp. 2209-2212
Author(s):  
Ugurcan Eroglu ◽  
Giuseppe Ruta
Keyword(s):  
Inner Constraints

On inner constraints in plane circular arches

2004 ◽  
Vol 74 (3-4) ◽  
pp. 212-222 ◽  
Author(s):  
G. C. Ruta
Keyword(s):  
Inner Constraints
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