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Fourth International Conference on Image and Graphics (ICIG 2007)最新文献

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Characterization of a Digital Micromirror Device for Computer Generated Video Holography 一种用于计算机生成视频全息的数字微镜装置的特性
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.69
Wang Dapeng, Wei Sui
{"title":"Characterization of a Digital Micromirror Device for Computer Generated Video Holography","authors":"Wang Dapeng, Wei Sui","doi":"10.1109/ICIG.2007.69","DOIUrl":"https://doi.org/10.1109/ICIG.2007.69","url":null,"abstract":"The article studies the holographic coding method using a digital micromirror device (DMD). On the basis of DMD's physical microstructure, three aspects of properties are concerned: two dimensional discrete micromirror pixels, blazed diffraction gratings of rotated mirrors and pulse width modulation working principle. The following factors have been considered, namely, DMD resolution, mirror size, pitch, rotating angle, incidental angles of reference wave and diffracting conditions. The paper puts forward the sampling method on interference plane, phase compensation technique and no-bias binary hologram coding methods, which have been proved to be feasible and effective. Results on holographic code have been deduced and simulated, which are meaningful for the application of DMD in holographic video and realtime 3-D reconstruction.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124856196","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: 5
High Speed, Low Memory Image Coding Using Zero blocks of Wavelet Coefficients 高速，低内存图像编码使用零块的小波系数
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.107
Wei-guo Yang, Zhang Tao, Jian-dong Zhang
{"title":"High Speed, Low Memory Image Coding Using Zero blocks of Wavelet Coefficients","authors":"Wei-guo Yang, Zhang Tao, Jian-dong Zhang","doi":"10.1109/ICIG.2007.107","DOIUrl":"https://doi.org/10.1109/ICIG.2007.107","url":null,"abstract":"We propose a new high speed, low memory SPECK image coder based on the form of block-unit states, called LBUS-SPECK, which uses the form of block-unit states and the form of block exponents to substitute LIS and LSP of SPECK. A form of block-unit states is introduced to store the significance flag of coefficients and the value of the block-unit exponents. A form of block exponents is introduced to store the block exponents which are used to represent the max coefficient in a decomposed block. A new block depth-finding strategy is developed for searching insignificant sets at sorting stage. Experimental results show that the obtained PSNR values for the decoded images are very close to those of SPECK algorithm and the memory consumption is reduced by 9 times, the encoding timing is saved about 15%. Comparing with SPECK algorithm, this algorithm not only has better performance of the decoded images, but also is easy to implement, especially, it provides an efficient way for hardware implementation of wavelet embedded block coding.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123266899","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
Development of system on 3D image visualization and analyzing for industrial computed tomography 工业计算机断层扫描三维图像可视化与分析系统的开发
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.81
Lu Yanping, Wang Jue, Yu Honglin
{"title":"Development of system on 3D image visualization and analyzing for industrial computed tomography","authors":"Lu Yanping, Wang Jue, Yu Honglin","doi":"10.1109/ICIG.2007.81","DOIUrl":"https://doi.org/10.1109/ICIG.2007.81","url":null,"abstract":"Industrial computed tomography (ICT) systems have widely applied in many important industrial areas for nondestructive testing (NDT) and non-destructive evaluate (NDE). A software system on 3D image visualization and analyzing for industrial CT is developed. This system is built on the frame that based on data flow model, and with the modules such as data I/O, data pre-processing, 3D visualization and data analyzing. It is includes the functions of complicated surface constructing, transparent volume rendering, reslicing, virtual endoscopy and 3D measuring. The system has been applied to several types of industrial CT, and the results indicate that it can clearly shows the 3D configuration and material information of tested object, which helps to analyze the object's status. The system improved the usefulness of industrial CT images and extended the functions of industrial CT.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125405026","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
Generation and Visualization of 3-D Realistic Natural Terrain Based on FBM 基于 FBM 的三维真实自然地形生成与可视化
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.104
Qing-Zhong Li, X. Gao
{"title":"Generation and Visualization of 3-D Realistic Natural Terrain Based on FBM","authors":"Qing-Zhong Li, X. Gao","doi":"10.1109/ICIG.2007.104","DOIUrl":"https://doi.org/10.1109/ICIG.2007.104","url":null,"abstract":"Based on fractal Brownian motion (FBM) model this paper presents a method for generating controllable and predictable natural terrains. The whole base-plane of the terrain to be simulated is first divided into several triangles by using the coordinates of limited known characteristic points on the plane. And then for each triangle, the three dimensional data of the simulated terrain are recursively generated according to a subdividing criterion based on the modified random midpoint displacement (RMD) method. Finally, the realistic visualization of the generated terrain data is implemented with PC computer by using VC++6.0 and OpenGL software programming. The simulation results show that the proposed algorithm provides a good performance in generating various terrains such as multi-peak mountains, general flat terrains, and complex combined terrains in divinable and controllable manner; and it is a better solution to the shape uncontrollable problem encountered in the traditional FBM based methods for modeling natural terrains.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127536511","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
False Negative and Positive Models of Dither Modulation Watermarking 抖动调制水印的假负和假正模型
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.90
Jun Xiao, Ying Wang
{"title":"False Negative and Positive Models of Dither Modulation Watermarking","authors":"Jun Xiao, Ying Wang","doi":"10.1109/ICIG.2007.90","DOIUrl":"https://doi.org/10.1109/ICIG.2007.90","url":null,"abstract":"False negative and positive probabilities are two important performances of watermarking systems. In the existing literature, results are known for studying the false negative and positive probabilities of the systems based on correlation detectors. Instead, in this paper, we study the false negative and positive probability models of dither modulation system which doesn't use correlation detector. We derive the false negative and positive probability models for dither modulation from the detection principle of the detectors. Expressions are derived both for the case of Gaussian noise and of no noise. The theoretical results are compared with the experimental results obtained in the case of random work and watermark, and the comparison validates the accuracy of the established models, and it also shows that random work and watermark have little influence on the false negative and positive probabilities, and this is different from the systems based on correlation detection.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128586630","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: 4
Digital Image Stabilization Based on Log-Polar Transform 基于对数极变换的数字稳像
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.82
Fei Yuan, Hong Zhang, Ruiming Jia
{"title":"Digital Image Stabilization Based on Log-Polar Transform","authors":"Fei Yuan, Hong Zhang, Ruiming Jia","doi":"10.1109/ICIG.2007.82","DOIUrl":"https://doi.org/10.1109/ICIG.2007.82","url":null,"abstract":"In this paper we present a novel log-polar transform based digital image stabilization algorithm to estimate large global transformations among consecutive frames. In our proposed algorithm, multi- resolution log-polar transform techniques in spatial domain are introduced as an initial motion estimation module to estimate arbitrary rotations, arbitrary translations and moderate scale changes. Then, a gradient-based nonlinear least squares optimization module is used to achieve sub-pixel accuracy. The experimental results show that the proposed algorithm can stabilize 15 frames per second in 320 X 240 image sequences with large interframe motions on a 3.0-GHZ Pentium 4 machine.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129979131","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: 10
Linear Features Extraction From Remote Sensing Image Based on Wedgelet Decomposition 基于小波分解的遥感图像线性特征提取
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.126
Niu Ruiqing, Mei Xiaoming, Zhang Liang-pei, Liu Ping-xiang
{"title":"Linear Features Extraction From Remote Sensing Image Based on Wedgelet Decomposition","authors":"Niu Ruiqing, Mei Xiaoming, Zhang Liang-pei, Liu Ping-xiang","doi":"10.1109/ICIG.2007.126","DOIUrl":"https://doi.org/10.1109/ICIG.2007.126","url":null,"abstract":"Linear feature extraction is an important problem for remote sensing image processing, and it is very difficult to extract those linear features embedded in strong noise or when the SNR (signal to noise) is low like the complicated environment of remote sensing image. In this paper, an algorithm based on wedgelet decomposition is proposed to extract linear features from remote sensing image. Firstly, beamlets can be generated by recursive dyadic partitioning, vertex marking and connecting in different scales, and beamlet transform is implemented as one important parameter to generate edge map of linear feature. Secondly, each dyadic square is split into two wedgelet segments, and wedgelet decomposition is implemented as the other important parameter to generate edge map of linear feature. The propose method can detect lines with any orientation, location and length in different scales. Experimental results show that the proposed method can extract linear features accurately from remote sensing image. It can be suited to remote sensing image processing and in practice it has surprisingly powerful and apparently unprecedented capabilities.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130172575","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
Silhouettes Preserved Simplification for Small-Screen Display 小屏幕显示的剪影保留简化
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.170
Hua-hong Chen, Xiaonan Luo, Shan Zhou
{"title":"Silhouettes Preserved Simplification for Small-Screen Display","authors":"Hua-hong Chen, Xiaonan Luo, Shan Zhou","doi":"10.1109/ICIG.2007.170","DOIUrl":"https://doi.org/10.1109/ICIG.2007.170","url":null,"abstract":"In this paper, silhouettes preserved simplification for small-screen display is proposed. Silhouettes are determined simply by the normals of adjacent faces and the viewpoint directions. Thus, three kinds of triangles on the silhouette are defined: the Vertex Silhouette Triangle, the Edge Silhouette Triangle and the Angle Silhouette Triangle. By applying new rules of collapse and adding weight factors to the cost, the approximation which has the silhouette closer to the original model can be achieved, even when it leaves few triangles. The proposed algorithm is simple and effective, so it is suitable for the applications which consider silhouettes to be more significant than whole details such as the small-screen display case.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127808860","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
Large-Scale Graph Database Indexing Based on T-mixture Model and ICA 基于t -混合模型和ICA的大规模图数据库索引
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.124
B. Luo, A. Zheng, Jin Tang, Haifeng Zhao
{"title":"Large-Scale Graph Database Indexing Based on T-mixture Model and ICA","authors":"B. Luo, A. Zheng, Jin Tang, Haifeng Zhao","doi":"10.1109/ICIG.2007.124","DOIUrl":"https://doi.org/10.1109/ICIG.2007.124","url":null,"abstract":"This paper proposes an indexing scheme based on t- mixture model and ICA, which is more robust than Gaussian mixture modeling when atypical points (or outliers) exist or the set of data has heavy tail. This indexing scheme combines optimized vector quantizer and probabilistic approximate-based indexing scheme. Experimental results on large-scale graph database show a notable efficiency improvement with optimistic precision.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121157123","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: 72
An Improved Algorithm of Contour Initialization in Active Contour Model 一种改进的主动轮廓模型轮廓初始化算法
Fourth International Conference on Image and Graphics (ICIG 2007) Pub Date : 2007-08-22 DOI: 10.1109/ICIG.2007.50
Fang Yanbin, Liu Caixia, Zhang Bingsen, Pan Zhenkuan
{"title":"An Improved Algorithm of Contour Initialization in Active Contour Model","authors":"Fang Yanbin, Liu Caixia, Zhang Bingsen, Pan Zhenkuan","doi":"10.1109/ICIG.2007.50","DOIUrl":"https://doi.org/10.1109/ICIG.2007.50","url":null,"abstract":"An improved algorithm of Contour Initialization in GVF Snake Model is proposed in this paper based on detailed analysis of the problems in current active contour models: poor performance under interference, large computational cost, inability to converge to complex or rough contours and difficulty for setting initial contour, etc. Our method efficiently solved the problems in complex or rough contours initialization by connecting the initial points of different resolutions obtained by multi-scale edge detection methods based on wavelet transform and suitably controlling the number of GVF force field iterations. Experiments show that the initial contour can be accurately set close to the objective contour and successfully extract the objective contours with interferential edges and points. The new contour initialization algorithm has further reduced computational cost, improved the anti-jamming ability and extended the application range of GVF Snake model.","PeriodicalId":367106,"journal":{"name":"Fourth International Conference on Image and Graphics (ICIG 2007)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125905033","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: 21
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