最新刊期
卷 12 ， 期 7 ， 2007
- 摘要：As one of a serial of reports, this paper is a survey on multimedia researches and applications in China, 2006. Since multimedia is an interdisciplinary research area, papers about multimedia technology are distributed on various journals. We checked about 2956 papers published on 9 Chinese journals in 2006, from which we have selected 607 related to multimedia technology and application. Then we made statistical analysis on them and the compared them with those from 2002 to 2005. Considering the new feature of multimedia technology, we make significant modification to the categories of the papers for this year in order that the new categories can reflect the situation of multimedia technology in 2006 better and match its developing trend more exactly. Looking into the statistic results we can find that researchers in China are continuously paying much attention to codec, digital watermarking, virtual reality, hypermedia, QoS, CSCW, P2P, multimodal interface, infrastructure of pervasive computing, GIS and Digital Earth and medical application, which are also the international evolution trends in a quite long period. We present here an overview on the progress in multimedia technology in China, 2006. This article can be used by researchers as a thoroughly references, and also will be helpful for people in technical planning and management.2889|181|0更新时间：2024-05-07
- 摘要：As a new direction in biometric, gait recognition aims to recognize individuals by the way they walk. In this paper, influencing factors and performance prediction to gait recognition are generalized at first. Subsequently, four major issues involved in a gait recognition system are reviewed in detail, namely motion detection, period detection, feature extraction and recognition methods. Finally, some research challenges and future directions in gait recognition are discussed.关键词：gait recognition;performance evaluation;motion detection;period detection;feature extraction;data fusion6016|306|0更新时间：2024-05-07
- 关键词：Naka-Rushton equation;dynamic range compression;tone reproduction;halo effect;graying out effect2754|219|0更新时间：2024-05-07
-
- 关键词：color image;image enhancement;histogram;hue3169|248|0更新时间：2024-05-07
- 摘要：The paper mainly focuses on the problem of filtering-based noise removal. First of all, the theoretical relationship between bilateral filtering and an optimization functional is concisely constructed, and meanwhile with a kind of generalized bilateral filtering derived. Through combining the idea of bilateral filtering with the digital TV model proposed by Chan, a new regularization term is proposed, based on which a unified optimization functional is subsequently constructed in both cases of Gaussian noise and impulse noise. Finally, a digital bilateral TV filtering is deduced by solving the Euler-Lagrange equation of the optimization functional. Experiment results demonstrate that the digital bilateral TV filtering is a reasonable and effective generalization of both the bilateral filtering and digital TV filtering. Especially for the impulse noise, digital bilateral TV filtering behaves much better than Median filtering, and hence it is a good method for the actual application.关键词：nonlinear denoising;robust estimation;bilateral filtering;total variation;edge-preserving3593|203|0更新时间：2024-05-07
- 关键词：adaptive;median filter;image processing;double-examine for dubious noisy pixels;RAMF3718|218|0更新时间：2024-05-07
- 摘要：Constructing wavelets via the lifting scheme with indeterminate coefficient has been proposed recently. The constructed lifting schemes generally have four steps. Differently we use the five-step lifting scheme to construct wavelet. Finally, we obtain a wavelet with very simple coefficients especially in its lifting scheme. Its order of vanishing moments is the same with that of D9/7 wavelet, but the coefficients of the corresponding filters are simple fractions. In its lifting scheme, the denominators of all coefficients are the power of 2 and the numerators are 1. Every step of the lifting algorithm only needs a shift operation with 0 to 3 bits. This wavelet approaches or exxceeds D9/7 wavelet in some mathematical properties, which will be verified in the numerical experiments of image compressions.关键词：lifting scheme;vanishing moments;biorthogonal wavelets2922|210|0更新时间：2024-05-07
-
- 关键词：biorthogonal filter;9/7 wavelet;vanish moment;lifting scheme3268|195|0更新时间：2024-05-07
- 关键词：auto focus;DCT;digital camera;focus value4482|208|0更新时间：2024-05-07
-
- 关键词：medical image segmentation;M RI;multiscale gradient vector field;geodesic active contour model3132|200|0更新时间：2024-05-07
-
- 关键词：eye feature extraction;deformable template;energy function;comer information;comer strength function3151|228|0更新时间：2024-05-07
-
- 关键词：visual probabilistic models;region segmentation;edge detection;scale2781|193|0更新时间：2024-05-07
- 关键词：omni-vision system;omni-mirror;image processing;self-localization2792|215|0更新时间：2024-05-07
- 关键词：electronic travel aid;human computer interaction;auditory display;sonification2574|190|0更新时间：2024-05-07
- 关键词：multi-pose face recognition;correlative sub-region mapping;two-dimensional coupled component analysis;pose compensation2797|177|0更新时间：2024-05-07
- 关键词：biomimetic pattern recognition;neuron;characteristic knowledge;fault tolerance3439|244|0更新时间：2024-05-07
-
- 摘要：The automatic counting of wire bars and rods is an unsolved problem. To solve this problem, an image recognition approach which is based on the distance transform technique is presented in this paper. The profile images of wire bars and rods are captured by CCD cameras. In the image preprocessing the binary transform, erosion, dilation and open are conducted. The method of searching the seed spots in the distance transformed image is put forward, by which the numbers of wire bars and rods can be counted. The technique is verified by experiment that image are acquired in the factories. The counting results are not affected by the varieties and the profile shapes of wire bars and rods. This methodology is suitable for the image of wire bars and rods that are disorder and the pack are not trimness, so it is worthy of popularizing and applying.关键词：pro-processing;distance transform;seed spot;chamfering2891|260|0更新时间：2024-05-07
- 关键词：location-based services;route planning;shortest path algorithms;multi-level topological structure;hierarchical algorithms3440|216|0更新时间：2024-05-07
- 摘要：Due to long period natural evolvement, real terrain surface is an anisotropic and nonlinear field. Moreover, terrain surface is not always so perfect that it keeps invariable self-similar characteristic in whole scale space. Traditional construction method based on isotropic single self-similar field has weaker ability to describe such complex surface. Consequently, multi-scale self-similar random field are used to construct isotropic multi-scale self-similar surface. And then, a structure filter, which transforms an isotropic field to an anisotropic field by spectrum filtering, is introduced to construct anisotropic multi-scale self-similar terrain. Simulation results show that presented approach not only constructs the orientation of mountain but also accord with varying degrees of roughness at different scales.关键词：fractal;muhi-scale self-similarity;anisotropy;terrain construction2569|191|0更新时间：2024-05-07
- 摘要：Variety of detected features and complexity of similarity calculation are two main problems in image registration. In this paper, angle histogram and alignment metric of edge feature points are defined, and a new approach for image registration is presented based on alignment metric of edge feature points. The first step is to detected edge image and feature points by using wavelet multi-scale product. In this step, wavelet multi-scale product can ensure the accuracy of edge image and feature points. The second step is to calculate alignment metric of feature points based on rotating angle obtained from angle histogram. Then mapping points can be accurately determined by an appropriate threshold. The calculation complexity of alignment metric is greatly simplified since the process is based on edge images. Several experiments conducted illustrate that this method have a good performance of robust, accuracy and efficiency, and also it can be applied to many situations.3700|189|0更新时间：2024-05-07
- 关键词：data merging;multi-sensors;triangulation;triangle meshes decimation2554|213|0更新时间：2024-05-07
- 关键词：mobile computing terminal;geometry compression;mobile 3 D graphics;progressive transmission2576|229|0更新时间：2024-05-07
- 摘要：In polygonal finite element method, using polygons to generate meshes can describe complexity geometric shapes more accurately and can enhance the flexibility of meshes generation. In this paper the Delaunay polygon is constructed based on Delannay triangulation by incorporating the Delaunay triangulars of a shared Delaunay circumcircle. The algorithm of Delaunay polygonization for polygonal elements grids generation is presented. Each polygonal mesh generated by Delaunay polygoniztion is unique. Some geometric domains usually used in engineering are meshed using the proposed technique. Mesh examples demonstrate that the Delaunay polygoniztion technique can generate excellent polygonal networks.关键词：polygonal element;mesh generation;Delaunay triangulation;Delaunay polygonization3454|211|0更新时间：2024-05-07
- Postal code：100190
- Tel：010-58887035/58887030/58887418 Email：jig@aircas.ac.cn
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05080539号-4
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0