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浏览/检索结果: 共10条，第1-10条 帮助 限定条件 内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Full-frequency sub-nanometer optics fabrication and testing 会议论文 3rd International Conference on Optical and Photonic Engineering, Singapore, April 14 作者:  Miao, Erlong;  Wang, Gaowen;  Gao, Songtao;  Sui, Yongxin;  Yang, Huaijiang 收藏  |  浏览/下载：23/0  |  提交时间：2016/07/18 Performance test of steel tube enclosed thermistors in air temperature measurements (EI CONFERENCE) 会议论文 3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China Chen H.; Peng J.; Yan F.; Sui Y.; Yang H. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 The performances of two steel tube enclosed precision thermistors are tested in a well controlled air environment to determine if the thermistors have enough accuracy for 0.01C levels of air temperature gradient measurement. Three Fluke's 5641 and three 5610 thermistors were tested for 24 hours in Fluke's 7008 calibration bath in the first step. In the second step  the performances of these two thermistors in steady state and transient state air temperature environments were tested for 8 hours separately. The results illustrate that  two of the 5641s were airproofed in a temperature well controlled tube  when steel tube enclosed precision thermistors are used in air temperature measurement  there are unstable departures from each other with a maximum 8.8 mC in constant air medium and 27 mC in temperature changing air medium. The transient-time errors are too large to show the true amounts of temperature changes for air temperature measurement. 2011 IEEE.   The parallel computation in one-way hash function designing (EI CONFERENCE) 会议论文 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Li P.; Sui Y.; Yang H. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 In order to put the parallel one-way hash function into engineering  two designing models based on pipeline technology are proposed in this paper. The definition of one-way hash function is shown first  and the structure and limitation of the current hash functions are discussed afterward. By analyzing the difference between parallel computation on different platforms and classifying one-way hash functions on application basis  the possibility and method of parallel one-way hash function designing on different hardware platforms are described  two designing models are constructed for the parallel one-way hash function designing. Finally  some attentions for designing are proposed from the engineering angle. The pipeline models that proposed in this paper contact the theoretical rationality and the engineering application of parallel one-way hash function together  which can improve the practicality of parallel one-way hash function to a great extent. 2010 IEEE.   Temperature gradients effect on surface test with high precise interferometer 会议论文 2010 Miao E. L.; Gu Y. Q.; Zhang J. A.; Sui Y. X.; Yang H. J. 收藏  |  浏览/下载：24/0  |  提交时间：2013/03/28 Target characteristic extraction algorithm based on block structure variables (EI CONFERENCE) 会议论文 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China Zhou Y.; Gu Y.; Yan F.; Sui Y.; Yang H. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 In image processing system  the target recognition is very crucial. An optimized algorithm based on the definition of block is presented. In this algorithm  two structure variables are self-defined to calculate the areas and centroids of targets. The labeling conflicts are resolved by tracking and correcting  which means that if there is a conflict  trace the neighbored blocks and correct the labels of them. Finally  the characteristics of blocks  which have the same label  are accumulated. This method has outstanding advantages in saving memory  compared with Pixel labeling algorithm and Run-length code algorithm. The new algorithm is simple and the results of target characteristics are easy to be analyzed and handled in the following processes. 2010 IEEE.   Temperature gradients effect on surface test with high precise interferometer (EI CONFERENCE) 会议论文 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China Miao E.-L.; Gu Y.-Q.; Zhang J.; Sui Y.-X.; Yang H.-J. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 In high precise surface testing  temperature stability and uniformity are of paramount importance to the high accuracy of test results. Micro-temperature variation and temperature gradients not only cause the change of the air refractive index and lead to the optical path variation in interferometer cavity  but also result in deformation of the tested surface itself  which always brings about errors to the test results. Temperature effects on the interferometer cavity and the tested surface are analyzed from the axial and radial directions in this letter. Temperature model of the interferometer cavity and the tested lens are established and quantitative calculations and diagram of test results versus temperature and lens dimension are provided. It shows that temperature gradients effect increase with the length of the interferometer and the dimension of the tested lens. The interferometer cavity is mainly affected by radial temperature gradients while the tested lens is mainly affected by the axial temperature gradients. 2010 Copyright SPIE - The International Society for Optical Engineering.   Using real-time embedded system with multiple DSPs in corona detection (EI CONFERENCE) 会议论文 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China Yan F.; Wang X.; Yu X.; Sui Y.-X.; Jin C.-S.; Yang H.-J. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 The method how to detect and locate corona real-time by double spectrums image  UV spectrum image and visible spectrum image of the object  was introduced. And the construction of an embedded system on which the double spectrums detection method can be realized was also introduced. CCD cameras' control data and their output image data were processed respectively. Using this kind of system  we can find the corona real-time by a combined image  thus where the electric leakage is can be found quickly. Experiments indicate this method and the embedded system with multiple DSPs suits for corona detection.   Using real-time embedded system with multiple DSPs in corona detection - art. no. 60273M 会议论文 2006 Yan F.; Wang X.; Yu X.; Sui Y. X.; Jin C. S.; Yang H. J. 收藏  |  浏览/下载：11/0  |  提交时间：2013/03/28 Multiwavelet based multispectral image fusion for corona detection (EI CONFERENCE) 会议论文 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China Wang X.; Yan F.; Sui Y.-X.; Yang H.-J.; Pang Y.-J. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 Image fusion refers to the integration of complementary information provided by various sensors such that the new images are more useful for human or machine perception. Multiwavelet transform has simultaneous orthogonality  symmetry  compact support  and vanishing moment  which are not possible with scalar wavelet transform. Multiwavelet analysis can offer more precise image analysis than wavelet multiresolution analysis. In this paper  a new image fusion algorithm based on discrete multiwavelet transform (DMWT) to fuse the dual-spectral images generated from the corona detection system is presented. The dual-spectrum detection system is used to detect the corona and indicate its exact location. The system combines a solar-blind UV ICCD with a visible camera  where the UV image is useful for detecting UV emission from corona and the visible image shows the position of the corona. The developed fusion algorithm is proposed considering the feature of the UV and visible images adequately. The source images are performed at the pixel level. First  a decomposition step is taken with the DMWT. After the decomposition step  a pyramid for each source image in each level can be obtained. Then  an optimized coefficient fusion rule consisting of activity level measurement  coefficient combining and consistency verification is used to acquire the fused coefficients. This process reduces the impulse noise of UV image. Finally  a new fused image is obtained by reconstructing the fused coefficients using inverse DMWT. This image fusion algorithm has been applied to process the multispectral UV/visible images. Experimental results show that the proposed method outperforms the discrete wavelet transform based approach.   Nonlinearity of optical triangulation 会议论文 1998 Zhang X. M.; Sui Y. X.; Yang J. D. 收藏  |  浏览/下载：9/0  |  提交时间：2013/03/28