最新刊期
卷 4 ， 期 6 ， 1999
- 摘要：A class of optimal 2 D stack filters based on omnidirectional structural elements constraints are proposed by defining omnidirectional structural elements in optimal stack filter design. Theory analyses and simulation experiments have shown that the class of filters are not only effective on preservation of image detail as soon as filtering noise, but also optimal under MAE and MSE criteria without prior statistical knowledge about noise and input signal.2301|133|0更新时间：2024-05-08
- 摘要：An approach about register optimising has been presented in this paper, which can be used to develop middle and low level image processing program more effectively. Double speeds can be attained with this method. Experiment based on TMS320C40 shows that a good effect has been reached with this method.2630|135|0更新时间：2024-05-08
- 摘要：Image segmentation is a basic technique in image processing.This paper presents an improved thresholding method based on Otsu's method, combining with other techniques to segment silver grains in in situ hybridization. The expriments show that the new method possesses some advantages in the aspects of precision and speed for image segmentation and is available for the automatic thresholding of silver grains in in situ hybridization.2424|128|0更新时间：2024-05-08
- 摘要：The method of successive acquisition and processing for dynamic image is studied in this paper. Incorporated with digital video technique, a method for dynamic image processing is suggested. The successive processing for images is realized through programming. The example of dynamic image processing is given. The method is practical, and is characterized by its broad applicability and easy realization.2546|115|0更新时间：2024-05-08
- 摘要：In this paper, we compare the coding performance of two different types of multi channel linear phase perfect-reconstruction filter banks. Because the energy in an image is concentrated in the low frequency domain, we observe that filter banks with longer length filters in the low frequency part and shorter length filters in the high frequency part outperform filter banks with equal length filters in image compression.关键词：Linear phase;Perfect reconstruction;Filter banks;Image coding2397|137|0更新时间：2024-05-08
- 摘要：In general, histogram equalization and histogram specification are regarded as two different histogram modification techniques in image enhancement because the latter is generally dependent on the former in the traditional method. In this paper, a new method for histogram modification is reported, in which histogram equalization is regarded as a special case of histogram specification, so it can be applied to either histogram equalization or histogram specification. And in the case of histogram specification, the result of the new method is better than that of the traditional method.关键词：image enhancement;Histogram modification;Histogram equalization;Histogram specification2914|185|0更新时间：2024-05-08
- 摘要：Motion target detection and tracking is one of the most important issues in applied vision research due to its wide applications in many fields. In this paper, a difference image based motion detection algorithm, which results in the symbolic representations of motion targets via their outer rectangular bounds, is presented. Then according to the continuity constraint, motion targets are tracked through image sequence. Experiments show that this method is fast and feasible which can deal with the overlapping and timely missing problems of targets in tracking more properly comparing with other existing methods.2686|115|0更新时间：2024-05-08
- 摘要：The functionality of spatial process analysis is the foundation of GIS's comprehensive applicaton. To realize such a goal, it is desirable that not only the data model of GIS can represtent the datasets needed by spatial process models and output datasets, but also GIS is able to do multitemporal spatial analysis. But most of current GISs are static in essence, they cannot represent temporal information and temporal topology, and have not rich functionality of multitemporal analysis. Completely changing or largely modifying data model of current GISs and developing a lot of spatial process models which may have very narrow applications could not be accepted by the GIS vendors. Based on this point of view, a method to extend current GIS to support spatial process simulation modeling is proposed.2910|152|0更新时间：2024-05-08
- 摘要：It is indispensable to acquire geographic information from the existed topographical maps with various scales in the process of establishing geographic information system. The hatched polygons, which represent residential areas, are one of the most important sorts of map information. The strategies and algorithms of recognizing and extracting hatched polygons based on scanned map images are put forward and discussed. The RLS transformations in four directions for segmenting the hatched polygons are developed and realized. In addition, the algorithms for image transformations such as shrink, expansion, thinning, open graph deletion and hatched polygon recognition are also discussed in detail. Experiments show that recognition rate is about 96 percent with the methods developed in this paper.2558|124|0更新时间：2024-05-08
- 摘要：Building its own unique concept, principle, and methodology on traditional surface graphics and imaging techniques, volume graphics becomes an important branch of computer graphics. The paper makes a comparison between surface graphics and volume graphics, surveys the history, current status, and development trends of the state of art.2749|132|0更新时间：2024-05-08
- 摘要：A new genetic algorithm is proposed to optimize the topology and connection weights for neural networks. The mixed encoding schema of binary and real value code not only retains the advantages of traditional genetic method but also gains the advantages of evolutionary programming and evolution strategies. The offspring generation method which combines the genetic operators and Solis and Wets operator diversifys the search space and speeds up the convergence of genetic search. And the dynamic parameter encoding method for the mixed code can obtain more precise connection weights.关键词：genetic algorithm;neural networks;optimization;Evolutionary programming;Evolution strategies2790|131|0更新时间：2024-05-08
- 摘要：A new approach for the location of circular arcs in scanned drawings is proposed in this paper. It includes two main procedures: raster to block procedure and circular arc recognition procedure. In the raster to block procedure, the drawing image is split up into primary components (blocks) which are composed of connected black pixels. Based on the blocks, several candidate circle (arc) links are generated and the circular arcs' centers, radius, starting points and end points are estimated in the circular arc recognition procedure.3421|116|0更新时间：2024-05-08
- 摘要：Computer simulation technique is an effective method researching the optimum of the port production process. This paper adopts dispersion event simulation technique and computer dynamic graphic technique, builds up the dynamic simulation model of the container harbor production process, develops a practical dynamic graphic simulation system, and analyses the simulation results to the simulation plans drawn up.2517|118|0更新时间：2024-05-08
- 摘要：Virtual Information Space is a application environment, integrating multimedia information. The first ability of virtual information space is to give users the capability of wandering around the virtual space smoothly, and keep the consistent of user's visual sense while wandering. This article discusses the image processing problems and algorithms of walking through in panoramic based virtual space, then designs and implements a high performance multithread wandering algorithm.3562|233|0更新时间：2024-05-08
- 摘要：MPEG-4 addresses a wealth of applications instead of a specific one, providing flexibility and extensibility for the various requirements of upcoming audiovisual applications, realizing content-based interactivity, reusability and scalability.The paper gives an introduction to MPEG-4 system framework, system receiver model(SRM),system hierarchy model,video object plane(VOP),model-based coding and semantic-based coding.2250|118|0更新时间：2024-05-08
- 摘要：An advanced method of remote surveillance system is proposed in this paper, with an emphasis on based MPEG-I remote multimedia surveillance system of which the structure, peculiarity and achieving method are dissertated in detail. Finally, the future application of the system is discussed.2306|210|0更新时间：2024-05-08
- 摘要：This paper presents an algorithm for threshold employing gray level arithmetic mean based on relevant conception in probability theory.The method shows a good performance while aiming at binarizing result,time cost,computational complexity and applicability.It has been applied in PCB detecting system and a satisfactory result has been attained.3228|219|0更新时间：2024-05-08
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