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Quality-assurance of heat-flow data: The new structure and evaluation scheme of the IHFC Global Heat Flow Database 期刊论文  OAI收割
TECTONOPHYSICS, 2023, 卷号: 863, 页码: 24
作者:  
  |  收藏  |  浏览/下载：17/0  |  提交时间：2024/01/02
Quality-assurance of heat-flow data: The new structure and evaluation scheme of the IHFC Global Heat Flow Database 期刊论文  OAI收割
TECTONOPHYSICS, 2023, 卷号: 863, 页码: 24
作者:  Fuchs, Sven;  Norden, Ben;  Neumann, Florian;  Kaul, Norbert;  Tanaka, Akiko
  |  收藏  |  浏览/下载：21/0  |  提交时间：2023/12/13
Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yan Y.; Gu S.; An Y.; Jin G.
收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25
The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper  an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed  the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization  and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile  the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted  and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well  its quality reduced about 20%  the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.  
Optimization on motion estimation algorithm based on H. 264 (EI CONFERENCE) 会议论文  OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Wen X.; Li G.
收藏  |  浏览/下载：56/0  |  提交时间：2013/03/25
Motion estimation is a very important part of video compression. As a result of using precision of motion vector in H.264 encoder  the computational cost increases rapidly  and motion estimation is the most time-consuming stage. In this paper  based on the UMHexagonS algorithm  an optimized algorithm is proposed based on the dynamic search window selection  big hexagon and small hexagon search mode respectively  which saves motion estimation time effectively with a little quality loss. Experiments with some typical video sequences show that compared to the original UMHexagonS algorithm  this new algorithm can save about 17.851 % motion estimation time and reduce the complexity of original scheme as well as enhance the real time performance of encoder and almost has no changes in the reconstructed picture quality and bitrates. 2010 IEEE.  
Fast color-transfer-based image fusion method for merging infrared and visible images (EI CONFERENCE) 会议论文  OAI收割
Multisensor, Multisource Information Fusion: Architectures, Algorithms, and Applications 2010, April 7, 2010 - April 8, 2010, Orlando, FL, United states
作者:  Xu S.
收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25
We present a computationally efficient color image fusion algorithm for merging infrared and visible images. At the core of the proposed method is the color transfer technique based on the linear YCBCR space. The method directly uses the grayscale fused image and the difference signals of the input images to construct the source YCBCR components  then uses the statistical color transfer technique to form a color fused image that takes the target image's color characteristics. Two different strategies  which respectively employ the pixel averaging fusion scheme and the multiresolution fusion scheme as the grayscale image fusion solution  are proposed to fulfill different user needs. The simple strategy using the pixel averaging fusion scheme answers to a need of easy implementation and speed of use. And the complex strategy using the multiresolution fusion scheme answers to the high quality need of the fused products. In addition  we also describe some useful theories about color-transfer-based image fusion. Experimental results show that the proposed color image fusion algorithm can effectively produce a natural appearing "daytime-like" color fused image  and even using the pixel averaging fusion scheme to implement the grayscale fusion can also provide a pleasing result. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Optical design of reflecting telescope with large field (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
Study of unequal error protection method based on JPEG2000 for surveyingmapping image (EI CONFERENCE) 会议论文  OAI收割
International Conference on Computer Science and Software Engineering, CSSE 2008, December 12, 2008 - December 14, 2008, Wuhan, Hubei, China
Yao Q.; Cao M.
收藏  |  浏览/下载：167/0  |  提交时间：2013/03/25
On aviation mapping  compression image maybe not decode because of wireless transmission interference. UEP(Unequal Error Protection) scheme is put forward about layer and block structure of JPEG2000 image compression method  flexibly enhances local reconfigurable image's quality which is in favor of identifier in the region of interest. 2008 IEEE.  and realizes three degrees UEP of data block  data header  image data via various degrees correction-coding under the condition of obstruct  naked and shade. BCH  RS and Hamming coding are simulated  and image decoding success rate and image's quality are analyzed according to different coding and ROI (Region of Interest) in the Gaussian white noise model and rayleigh fading model. Results shows that the method we putted forward roughly improves decoding success rate  at the same time  almost not increasing bandwidth  
The application study on building materials with computer color quantification system (EI CONFERENCE) 会议论文  OAI收割
ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  Yu H.;  Li Z.;  Li Z.
收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25
The first impression of any building to a person is its exterior and decoration  therefore  at the same time  and therefore the quality of decoration project shows the more important position in building project. A lot of projects produce quality problem because of the material color difference  how to grasp and control the color change of building materials  the color difference problem laying stone materials is also studied in this paper  which exists universally at the common project  and carry out color quantification  and the solution scheme has been given using this system.  and is often found at the high-grade decoration  it has the very important meaning. According to the color theory  a computer vision system used in color quantification measurement is established  the standard illuminant A is selected as the light source. In order to realize the standardization of color evaluation  the mutual conversion between RGB and XYZ color space is studied  which is realized by the BP network. According to the colorimetry theory  the computer program is compiled in order to establish the software system  and realize the color quantitative appraisement in whole color gamut. LCH model is used at quantifying the color of building materials  and L*a*V model is used at comparing the color change. If the wooden floor is selected and laid improperly during family fitment  it is easy to present "flower face". The color also arises greater discrepancy using the laths of same tree. We can give the laying scheme using the color quantification system  
a perceptual sensitivity based redundant slices coding scheme for error-resilient transmission h.264/avc video 会议论文  OAI收割
4th International Conference on Communications, Circuits and Systems (ICCCAS 2006), Guilin, PEOPLES R CHINA, JUN 25-28,
Xu Jin; Wu Zhimei
  |  收藏  |  浏览/下载：26/0  |  提交时间：2011/07/28
a perceptual sensitivity based redundant slices coding scheme for error-resilient transmission h.264/avc video 会议论文  OAI收割
4th International Conference on Communications, Circuits and Systems (ICCCAS 2006), Guilin, PEOPLES R CHINA, JUN 25-28,
Xu Jin; Wu Zhimei
  |  收藏  |  浏览/下载：15/0  |  提交时间：2011/07/28