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2010 Symposium on Photonics and Optoelectronics最新文献

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Skin Damage of Ablative Laser in Vivo Based on Multiphoton Microscopy 基于多光子显微镜的烧蚀激光体内皮肤损伤研究
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504088
Shulian Wu, Xiaoman Zhang, Hui Li
{"title":"Skin Damage of Ablative Laser in Vivo Based on Multiphoton Microscopy","authors":"Shulian Wu, Xiaoman Zhang, Hui Li","doi":"10.1109/SOPO.2010.5504088","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504088","url":null,"abstract":"Recently, various lasers therapies have been employed in clinical practice. And the lasers which relied on their wide clinical applications in treating cutaneous diseases and performing cosmetic procedures have developed greatly. The effects in treatment of laser treatment depend on the immediate response of incident light irradiated in tissues and then the subsequent tissue regeneration and remodeling, especially ablative lasers. In this study, multiphoton microscopy with autofluorescence and second harmonic generation has developed to monitor the optic-thermal response of skin tissue irradiated by CO2 and the process of regeneration. The injury dimensions are also obtained in the experiment. Our findings show that the method has potential ability to monitor the process of tissue change and the remodeling in mouse dermis. The outcome indicates that the injury dimension and area increase with irradiated dose, and the injury threshold is 0.5W. And then the renovation time also increases with laser fluence.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114310933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Improving Image Enhancement by Gradient Fusion 利用梯度融合改进图像增强
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504345
Xin Xu, Qiang Chen, D. Xia
{"title":"Improving Image Enhancement by Gradient Fusion","authors":"Xin Xu, Qiang Chen, D. Xia","doi":"10.1109/SOPO.2010.5504345","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504345","url":null,"abstract":"We present a fusion approach in the gradient domain to combine complementary advantages between image enhancement results for visualization improvement. A weighted structure tensor is employed to capture significant details of each input channel, and local contrast is incorporated in the design of fusion weights. Experimental results demonstrate that the fused image can preserve significant detail and structural information of each input image, and the visual effect is improved.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114818950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Study of Various Dammann Grating 各种达曼光栅的研究
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504438
Hua Zou, W. Zhu, J. Gong, Kaixiao Zhang, H. Y. Xie
{"title":"The Study of Various Dammann Grating","authors":"Hua Zou, W. Zhu, J. Gong, Kaixiao Zhang, H. Y. Xie","doi":"10.1109/SOPO.2010.5504438","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504438","url":null,"abstract":"Design of various Dammann grating including the equally-spaced, unequally-spaced and circular Dammann grating is introduced in this paper. Dammann grating is pure-phase-modulation grating whose phase transtion points are optimized to produce equal-intensity spots at diffractive orders with highly efficiency. Firstly, the theory and optimized solutions of various Dammann grating with various algorithm is prsented. Another, the diffractive characterization and uniformity of the generated multiple spots are analyzed in this paper.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116893698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Study on Laser-Induced Optical Dielectric Film Material Damage by Short-Laser Pulse 激光短脉冲诱导光学介质膜材料损伤的研究
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504459
Yao-fu Heng, Miao Ye
{"title":"Study on Laser-Induced Optical Dielectric Film Material Damage by Short-Laser Pulse","authors":"Yao-fu Heng, Miao Ye","doi":"10.1109/SOPO.2010.5504459","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504459","url":null,"abstract":"Multi-photon ionization (MPI) and avalanche ionization (AI) have become main ionization mechanism of laser-induced optical dielectric film material damage, the different effects of MPI and AI for longer and shorter pulse are also discussed respectively. Based on Stuart et al.'s model equation and by means of numerical method, this paper has studied the interrelation of laser threshold intensity (Ith) versus laser pulse duration ( ) and damage threshold fluence (Fth) versus , and the effect of MPI and AI versus , studied electron density evolution in fused silica dielectric films induced by single-pulse laser. The results show that for fused silica film, for longer pulse duration , AI plays leading role and MPI serves for production of seed electrons for AI; for shorter duration , MPI predominates the prophase of the pulse duration. After stable MPI established, AI will exceed MPI and dominate the later period.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117110888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comb-Filter Based on In-Fiber Mach-Zehnder Interferometer Using a Twin-Core Fiber 基于双芯光纤马赫曾德干涉仪的梳状滤波器
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504127
L. Fan, Weiwei Jiang, S. Feng, R. Zhao, Siwen Zheng, Huanlu Li, L. Pei, S. Jian
{"title":"Comb-Filter Based on In-Fiber Mach-Zehnder Interferometer Using a Twin-Core Fiber","authors":"L. Fan, Weiwei Jiang, S. Feng, R. Zhao, Siwen Zheng, Huanlu Li, L. Pei, S. Jian","doi":"10.1109/SOPO.2010.5504127","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504127","url":null,"abstract":"A comb-filter based on in-fiber Mach-Zehnder interferometer (MZI) is experimentally fabricated by splicing a section of single mode noncircular twin-core fiber (TCF) between two single mode fibers (SMFs). The wavelength spacing between the adjacent transmission peaks was numerically and experimentally analyzed, and it is associated with the effective index difference of the two cores and the length of the TCF. The wavelength spacing between the adjacent transmission peaks can be narrowed by increasing the length of the TCF or the effective index difference of the two cores. This device is compact and easy to be fabricated.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123712964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Generalized DAMRF Image Model for Super-Resolution of License Plates 车牌超分辨率的广义DAMRF图像模型
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504351
W. Zeng, Xiaobo Lu
{"title":"A Generalized DAMRF Image Model for Super-Resolution of License Plates","authors":"W. Zeng, Xiaobo Lu","doi":"10.1109/SOPO.2010.5504351","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504351","url":null,"abstract":"In this paper, we propose a novel super-resolution image reconstruction algorithm to handle license plate texts in real traffic videos. A generalized discontinuity adaptive Markov random field (DAMRF) model is proposed based on the recently reported bilateral filtering, which is not only edge preservation but also robust to noise. Moreover, instead of looking for fixed value for the regularization parameter, a method for automatically estimating it is applied to the proposed model based on the input images. We use graduated non-convexity (GNC) optimization procedures to minimize the cost function. Results on synthetic and several real traffic sequences are presented, showing the effectiveness of the proposed method and demonstrating its superiority to the conventional DAMRF super-resolution method.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116856690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A Modified Constrained Random Selection Approach for Relevance Feedback 一种改进的约束随机选择关联反馈方法
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504356
H. Zhang, Xianwei Li
{"title":"A Modified Constrained Random Selection Approach for Relevance Feedback","authors":"H. Zhang, Xianwei Li","doi":"10.1109/SOPO.2010.5504356","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504356","url":null,"abstract":"A modified constrained random selection approach for relevance feedback is proposed in this paper. The modified method improves the representative of the negative samples, and solves the \"small size sample problem\" at certain degrees. Experiments demonstrated that better feedback results have got within less feedback times, comparing with original constrained random selection approach.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"4 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120836486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design of Light Guide Plate Using White Light Emitting Diode for Direct Illumination of Liquid Crystal Display 液晶显示器直接照明用白光二极管导光板的设计
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504375
He Zhang, Jun Zhu, Qunqing Li, Qiaofeng Tan
{"title":"Design of Light Guide Plate Using White Light Emitting Diode for Direct Illumination of Liquid Crystal Display","authors":"He Zhang, Jun Zhu, Qunqing Li, Qiaofeng Tan","doi":"10.1109/SOPO.2010.5504375","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504375","url":null,"abstract":"Traditional large-size direct-illumination structures for liquid crystal display (LCD) do not contain light guide plates. Though the uniformity meets the demand of LCD module, the whole thickness of the illumination system is difficult to reduce. With the development of white light emitting diode, many changes can be introduced in LCD for improving performances of system. In this paper, a design method based on that technique for direct illuminated LCD with light guide is presented. A LCD illuminating module was designed with this method, and uniformity can reach 86% which satisfied the illumination demand.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124683077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Extension of Texture Spectrum Using Local Structure and Variance 基于局部结构和方差的纹理谱扩展
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504465
Junding Sun, Shisong Zhu, Xiaosheng Wu
{"title":"An Extension of Texture Spectrum Using Local Structure and Variance","authors":"Junding Sun, Shisong Zhu, Xiaosheng Wu","doi":"10.1109/SOPO.2010.5504465","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504465","url":null,"abstract":"In order to improve the performance of the region texture spectrum descriptors, an improved operator, called ID-LBP is discussed firstly. Then, three rotation invariant texture descriptors, named CS-LBPV, D-LBPV and ID-LBPV, are proposed in the paper based on local structure and the variance of local image. The new operators characterize the local contrast information into the one-dimensional texture spectrum histogram and they do not need any quantization. The descriptors mentioned in the paper are tested and compared with the traditional methods on two commonly used texture databases and the experimental results show the performance improvement of the new methods in texture image retrieval.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124969723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Optimization Design of Electrode Size for 1D Liquid Crystal Optical Phased Array with High Resolution 高分辨率一维液晶光学相控阵电极尺寸的优化设计
2010 Symposium on Photonics and Optoelectronics Pub Date : 2010-06-19 DOI: 10.1109/SOPO.2010.5504011
Lin Xu, Ziqiang Huang
{"title":"Optimization Design of Electrode Size for 1D Liquid Crystal Optical Phased Array with High Resolution","authors":"Lin Xu, Ziqiang Huang","doi":"10.1109/SOPO.2010.5504011","DOIUrl":"https://doi.org/10.1109/SOPO.2010.5504011","url":null,"abstract":"In one-dimensional (1D) liquid crystal optical phased array (LCOPA) device, liquid crystal molecular is controlled by discrete strip-shaped electrodes. The size of electrodes influences directly the phase modulation characteristics and far field diffraction efficiency. The model of LCOPA device was set up and the director distribution of liquid crystal in electric field was simulated. The influence of electrode size on phase modulation and diffraction efficiency was analyzed. The results showed that diffraction efficiency increases monotonously with electrode space decreasing. However, when electrode space decreases to less that 1μm, the increment of diffraction efficiency is very small and less than 1%. This means that 1μm of electrode space is small enough for the design of LCOPA devices.","PeriodicalId":155352,"journal":{"name":"2010 Symposium on Photonics and Optoelectronics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128361214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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