Pub Date : 2014-01-01DOI: 10.3788/GXJS20144001.0027
Wang Yilei, D. Hui, Zhou Xiuzhuang, Li Yang
For the issues caused by the complexity of light changing and object occlusion in object tracking,multi-feature fusion strategy is used in particle filter tracking.The multi-feature weighted histogram is proposed,which can describe the color and texture characteristics of the tracking target,and updates the reference target model adaptively to the changed target.The algorithm can effectively deal with the impact of the rotation,the shutter,the light moves in the video.Experimental results show the proposed method is adaptability and robustness in the complex environment with high precision.
{"title":"An adaptive particle filter tracking algorithm based on the integration of color and texture","authors":"Wang Yilei, D. Hui, Zhou Xiuzhuang, Li Yang","doi":"10.3788/GXJS20144001.0027","DOIUrl":"https://doi.org/10.3788/GXJS20144001.0027","url":null,"abstract":"For the issues caused by the complexity of light changing and object occlusion in object tracking,multi-feature fusion strategy is used in particle filter tracking.The multi-feature weighted histogram is proposed,which can describe the color and texture characteristics of the tracking target,and updates the reference target model adaptively to the changed target.The algorithm can effectively deal with the impact of the rotation,the shutter,the light moves in the video.Experimental results show the proposed method is adaptability and robustness in the complex environment with high precision.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"27-31"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262531","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}
For panchromatic CCD optical remote sensing satellite imaging,a cloud detection method in high-resolution remote sensing image based on multi-attribute fusion is proposed.First,according to the physics and imaging features,the feature parameters are extracted,and a concept of separable degree is proposed for feature selection.Then,according to the distribution differences of the samples,the LDA algorithm is brought for reducing the dimension of the feature space.At last,a SVM classifier is used for cloud detection.The experimental results show that the proposed method is suitable for high-resolution panchromatic remote sensing image with different imaging platform,and it has a high detection probability and a low false alarm probability,and a high efficiency.
{"title":"A method for cloud detection in high-resolution remote sensing image based on multi-attribute fusion","authors":"赵潇 Zhao Xiao, 侯晴宇 Hou Qing-yu, 梁冰冰 Liang Bingbing, 张. Z. Wei","doi":"10.3788/GXJS20144002.0145","DOIUrl":"https://doi.org/10.3788/GXJS20144002.0145","url":null,"abstract":"For panchromatic CCD optical remote sensing satellite imaging,a cloud detection method in high-resolution remote sensing image based on multi-attribute fusion is proposed.First,according to the physics and imaging features,the feature parameters are extracted,and a concept of separable degree is proposed for feature selection.Then,according to the distribution differences of the samples,the LDA algorithm is brought for reducing the dimension of the feature space.At last,a SVM classifier is used for cloud detection.The experimental results show that the proposed method is suitable for high-resolution panchromatic remote sensing image with different imaging platform,and it has a high detection probability and a low false alarm probability,and a high efficiency.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"145-150"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262735","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144002.0128
钟云飞 Zhong Yunfei, 朱志勇 Zhu Zhiyong, 刘春燕 Liu Chunyan
Moire patterns with many characteristics such as high reliability,strong exclusive,simple process,low cost,as a means for security are widely used in the field of packaging and printing.The Mohr's theory,generation and principle of moire pattern anti-counterfeiting are analyzed.The some easy image informations are hidden in the pre-copy color images.The how screening shapes,screening percentage,screening frequency and screening angle to affect sub-image and how to choose the color channel to embed the sub-image on condition of two printing colors are analyzed.Through experiments,suitable color moire pattern anti-counterfeiting parameters are gotten.The screening parameters achieved can be used in designs of halftoning moire security and can provide references for the field of embedding moire patterns in color printing products for security,which have a good applicability.
{"title":"Color security printing based on moire patterns","authors":"钟云飞 Zhong Yunfei, 朱志勇 Zhu Zhiyong, 刘春燕 Liu Chunyan","doi":"10.3788/GXJS20144002.0128","DOIUrl":"https://doi.org/10.3788/GXJS20144002.0128","url":null,"abstract":"Moire patterns with many characteristics such as high reliability,strong exclusive,simple process,low cost,as a means for security are widely used in the field of packaging and printing.The Mohr's theory,generation and principle of moire pattern anti-counterfeiting are analyzed.The some easy image informations are hidden in the pre-copy color images.The how screening shapes,screening percentage,screening frequency and screening angle to affect sub-image and how to choose the color channel to embed the sub-image on condition of two printing colors are analyzed.Through experiments,suitable color moire pattern anti-counterfeiting parameters are gotten.The screening parameters achieved can be used in designs of halftoning moire security and can provide references for the field of embedding moire patterns in color printing products for security,which have a good applicability.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"128-132"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70263018","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}
In order to calibrate the eight-channel parallel multi-spectral imaging,the principle of the multi-spectral imaging is introduced.The radiation response of the camera is analyzed.Based on the eight channels and the characteristics of the narrowband filters,a method which takes the G channel output of each digital camera as calibration channel is proposed.Depending on the spectral radiance of the integrating sphere under different color temperatures and exposure time of the camera,the camera's radiation characteristic curve is fit.The results show that the method is accurate and valid. An accurate absolute spectral radiance output of the object is got.The eight channel multi-spectral imaging system′s data processing requirements is met.
{"title":"Radiometric calibration of eight-channel parallel multi-spectral imaging","authors":"屈亮 Qu Liang, 廖宁放 Liao Ningfang, 董志刚 Dong Zhigang, 杨奇开 Yang Qikai, 吕航 Lü Hang, 董淑雯 Dong Shuwen","doi":"10.3788/GXJS20144003.0240","DOIUrl":"https://doi.org/10.3788/GXJS20144003.0240","url":null,"abstract":"In order to calibrate the eight-channel parallel multi-spectral imaging,the principle of the multi-spectral imaging is introduced.The radiation response of the camera is analyzed.Based on the eight channels and the characteristics of the narrowband filters,a method which takes the G channel output of each digital camera as calibration channel is proposed.Depending on the spectral radiance of the integrating sphere under different color temperatures and exposure time of the camera,the camera's radiation characteristic curve is fit.The results show that the method is accurate and valid. An accurate absolute spectral radiance output of the object is got.The eight channel multi-spectral imaging system′s data processing requirements is met.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"240-244"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70264577","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144004.0349
邱培镇 Qiu Peizhen, 庞. P. Tao
A method is proposed to extract the angle of reference wave and simplify the process of the filter design in digital reconstruction of off-axis hologram.The spectrum characteristics of the off-axis digital holograms illuminated with reference wave are analyzed.Firstly,the digital hologram is multiplied with computer simulated reference wave.Secondly,it is used to do fast Fourier transform and the spectrum is obtained.It is found that without the extra spectra-shift process,the spectrum of the real image always appears in the center of the spectrum plane and never shifts.According to this feature,the optimal angle of the simulated reference wave is obtained,and the process of filter structure design can be simplified.Based on the filter technique,the zero-order and conjugate image in the reconstructed image of off-axis digital holography is eliminated,and the contrast and the details of the reconstructed real image are improved.The theoretical analysis and experimental results are analyzed.
{"title":"Spectrum characteristics of digital holograms illuminated with reference wave and its application","authors":"邱培镇 Qiu Peizhen, 庞. P. Tao","doi":"10.3788/GXJS20144004.0349","DOIUrl":"https://doi.org/10.3788/GXJS20144004.0349","url":null,"abstract":"A method is proposed to extract the angle of reference wave and simplify the process of the filter design in digital reconstruction of off-axis hologram.The spectrum characteristics of the off-axis digital holograms illuminated with reference wave are analyzed.Firstly,the digital hologram is multiplied with computer simulated reference wave.Secondly,it is used to do fast Fourier transform and the spectrum is obtained.It is found that without the extra spectra-shift process,the spectrum of the real image always appears in the center of the spectrum plane and never shifts.According to this feature,the optimal angle of the simulated reference wave is obtained,and the process of filter structure design can be simplified.Based on the filter technique,the zero-order and conjugate image in the reconstructed image of off-axis digital holography is eliminated,and the contrast and the details of the reconstructed real image are improved.The theoretical analysis and experimental results are analyzed.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"349-352"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70265308","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144005.0421
吴亚琴 Wu Yaqin, 白福忠 Bai Fuzhong, 刘. L. Zhen, 田丰 Tian Feng, 顾乃庭 Gu Naiting
A point-diffraction interferometer is established,which is based on a polarizing mask and the circular common-path setup.The fringe visibility can be adjusted by rotating the polarizer to change the relative intensities between the test and the reference beams.The fringe pattern with the highest visibility is acquired,and the fringe visibility is also analyzed theoretically in detail.The linear carrier frequency may be easily adjusted in the optical system,so the extraction accuracy of the Fourier-transform method is effectively improved.A validated experiment is accomplished.
{"title":"Circular common-path point-diffraction interferometer","authors":"吴亚琴 Wu Yaqin, 白福忠 Bai Fuzhong, 刘. L. Zhen, 田丰 Tian Feng, 顾乃庭 Gu Naiting","doi":"10.3788/GXJS20144005.0421","DOIUrl":"https://doi.org/10.3788/GXJS20144005.0421","url":null,"abstract":"A point-diffraction interferometer is established,which is based on a polarizing mask and the circular common-path setup.The fringe visibility can be adjusted by rotating the polarizer to change the relative intensities between the test and the reference beams.The fringe pattern with the highest visibility is acquired,and the fringe visibility is also analyzed theoretically in detail.The linear carrier frequency may be easily adjusted in the optical system,so the extraction accuracy of the Fourier-transform method is effectively improved.A validated experiment is accomplished.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"421-424"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70265820","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144005.0450
汪宇青 Wang Yuqing, 李湘宁 Li Xiang-ning, 黄. H. Hui, 刘晓东 Liu Xiaodong
A new method based on the theory of compound parabolic concentrator(CPC),the edge-ray principle and the off-axis rays tracing theory in geometrical optics is proposed to design a reflector for big size LED to generate uniform illumination in a certain range of angle.The structure of LED reflector can be quantitative deduced by using this method to achieve high energy efficiency and uniformity.Simulating in the optical design software ZEMAX shows that the method is reasonable.
{"title":"Reflector design method based on compound parabolic concentrator(CPC)for big size LED","authors":"汪宇青 Wang Yuqing, 李湘宁 Li Xiang-ning, 黄. H. Hui, 刘晓东 Liu Xiaodong","doi":"10.3788/GXJS20144005.0450","DOIUrl":"https://doi.org/10.3788/GXJS20144005.0450","url":null,"abstract":"A new method based on the theory of compound parabolic concentrator(CPC),the edge-ray principle and the off-axis rays tracing theory in geometrical optics is proposed to design a reflector for big size LED to generate uniform illumination in a certain range of angle.The structure of LED reflector can be quantitative deduced by using this method to achieve high energy efficiency and uniformity.Simulating in the optical design software ZEMAX shows that the method is reasonable.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"450-453"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70266164","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144001.0075
杨伟声 Yang Weisheng
Two kinds of thin-film with full different physic performances are combined together on K9glass substrate to form composite film layer,achieving anti-electromagnetic interference and high light-transmitting.Technical performance index:light-average transmissivity is not less than 90%in 400nm-1100nm.The resistance value on anti-electromagnetic interference shielding surface is 4±0.5Ω/口to achieve a good anti-electromagnetic interference shielding.A complex film construction composed of electromagnetic interference resistance and reducing reflecting coating is designed to meet the technical performance requirements and coating experiment is carried out.The experiment result shows that microstructure of optical thin film can be improved by ion assisted deposition technology to increase optical performance,physical performance and durability of complex thin film.
{"title":"Coated technology on composite thin-film of anti-electromagnetic interference and anti-reflecting film by ion assisted deposition","authors":"杨伟声 Yang Weisheng","doi":"10.3788/GXJS20144001.0075","DOIUrl":"https://doi.org/10.3788/GXJS20144001.0075","url":null,"abstract":"Two kinds of thin-film with full different physic performances are combined together on K9glass substrate to form composite film layer,achieving anti-electromagnetic interference and high light-transmitting.Technical performance index:light-average transmissivity is not less than 90%in 400nm-1100nm.The resistance value on anti-electromagnetic interference shielding surface is 4±0.5Ω/口to achieve a good anti-electromagnetic interference shielding.A complex film construction composed of electromagnetic interference resistance and reducing reflecting coating is designed to meet the technical performance requirements and coating experiment is carried out.The experiment result shows that microstructure of optical thin film can be improved by ion assisted deposition technology to increase optical performance,physical performance and durability of complex thin film.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"75-78"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262198","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144002.0180
王一帆 Wang Yifan, 唐正宁 Tang Zhengning
{"title":"Dimensionality reduction method based oncombination of PCA and ICA","authors":"王一帆 Wang Yifan, 唐正宁 Tang Zhengning","doi":"10.3788/GXJS20144002.0180","DOIUrl":"https://doi.org/10.3788/GXJS20144002.0180","url":null,"abstract":"","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"180-183"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70263216","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144003.0199
申. S. Jing, 石俊生 Shi Junsheng, 杨卫平 Yang Weiping, 姚军财 Yao Jun-cai, 黄小乔 Huang Xiaoqiao
Combined with contrast sensitivity characteristics of human vision system and image feature in transform domain,a new method is proposed for calculating the human perception error threshold of image.Combining the calculated threshold,a new color image watermarking scheme is brought forward,and the attack test and simulation experiments are carried out.The results show that,watermark information extracted from attacked images embedded watermark is still visible,the normalized coefficient values after compression attack with the compression quality factor 50% still can reach more than 0.7371,which shows that watermarking scheme proposed has good transparency and high robust.And in the watermark embedding and extraction process,the original color image is transform into the device-independent CIELAB color space in order to improve the robustness of the watermark.Synthesis results show that the proposed watermarking scheme is an effective watermark embedding and extraction scheme.
{"title":"Color image watermark technology base on human visual detection characteristics","authors":"申. S. Jing, 石俊生 Shi Junsheng, 杨卫平 Yang Weiping, 姚军财 Yao Jun-cai, 黄小乔 Huang Xiaoqiao","doi":"10.3788/GXJS20144003.0199","DOIUrl":"https://doi.org/10.3788/GXJS20144003.0199","url":null,"abstract":"Combined with contrast sensitivity characteristics of human vision system and image feature in transform domain,a new method is proposed for calculating the human perception error threshold of image.Combining the calculated threshold,a new color image watermarking scheme is brought forward,and the attack test and simulation experiments are carried out.The results show that,watermark information extracted from attacked images embedded watermark is still visible,the normalized coefficient values after compression attack with the compression quality factor 50% still can reach more than 0.7371,which shows that watermarking scheme proposed has good transparency and high robust.And in the watermark embedding and extraction process,the original color image is transform into the device-independent CIELAB color space in order to improve the robustness of the watermark.Synthesis results show that the proposed watermarking scheme is an effective watermark embedding and extraction scheme.","PeriodicalId":35591,"journal":{"name":"Guangxue Jishu/Optical Technique","volume":"40 1","pages":"199-204"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70264443","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：