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A multi-objective multicast routing optimization based on differential evolution in MANET

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International Journal of Intelligent Computing and Cybernetics 2018年第1期11卷 121-140页

作者： Wenhong Wei Yong Qin zhaoquan cai School of Computer Science Dongguan University of TechnologyDongguanChina Department of Computer Science Huizhou UniversityHuizhouChina

Purpose–The purpose of this paper is to propose a multi-objective differential evolution algorithm named as MOMR-DE to resolve multicast routing *** mobile ad hoc network(MANET),multicast routing is a non-deterministic polynomial-complete problem that deals with the various objectives and *** of service(QoS)in the multicast routing problem mainly depends on cost,delay,jitter and *** the cost,delay,jitter and bandwidth are always considered as multi-objective for designing multicast routing ***,mobile node battery energy is finite and the network lifetime depends on node battery *** batterypowerconsumptionishigh inany one ofthe nodes,the chances ofnetwork’s lifereduction due to path breaks are also *** the other hand,node’s battery energy had to be consumed to guarantee high-level QoS in multicast routing to transmit correct data anywhere and at any ***,the network lifetime should be considered as one objective of the multi-objective in the multicast routing ***/methodology/approach–Recently,many metaheuristic algorithms formulate the multicast routing problem as a single-objective problem,although it obviously is a multi-objective optimization *** the MOMR-DE,the network lifetime,cost,delay,jitter and bandwidth are considered as five ***,three QoS constraints which are maximum allowed delay,maximum allowed jitter and minimum requested bandwidth are *** addition,we modify the crossover and mutation operators to build the shortest-path multicast tree to maximize network lifetime and bandwidth,minimize cost,delay and ***–Two sets of experiments are conducted and compared with other algorithms for these *** results showthat our proposedmethod is capableof achieving faster convergence andis more preferable for multicast routing in ***/value–In MANET,most metaheuristic algorithms formulate the multicast routing problem

关键词： Differential evolution Quality of service Mobile ad hoc network Multicast routing

Batch image alignment via subspace recovery based on alternative sparsity pursuit

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Computational Visual Media 2017年第3期3卷 295-304页

作者： Xianhui Lin Zhu Liang Yu Zhenghui Gu Jun Zhang zhaoquan cai College of Automation Science and Engineering South China University of Technology School of Information Engineering Guangdong University of Technology School of Computer Science Huizhou University

The problem of robust alignment of batches of images can be formulated as a low-rank matrix optimization problem, relying on the similarity of well-aligned images. Going further, observing that the images to be aligned are sampled from a union of low-rank subspaces, we propose a new method based on subspace recovery techniques to provide more robust and accurate alignment. The proposed method seeks a set of domain transformations which are applied to the unaligned images so that the resulting images are made as similar as possible. The resulting optimization problem can be linearized as a series of convex optimization problems which can be solved by alternative sparsity pursuit techniques. Compared to existing methods like robust alignment by sparse and low-rank models, the proposed method can more effectively solve the batch image alignment problem,and extract more similar structures from the misaligned images.

关键词： image alignment subspace recovery sparse representation convex optimization image similarity

Surveillance Video Key Frame Extraction Based on Center Offset

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Computers, Materials & Continua 2021年第9期68卷 4175-4190页

作者： Yunzuo Zhang Shasha Zhang Yi Li Jiayu Zhang zhaoquan cai Shui Lam School of Information Science and Technology Shijiazhuang Tiedao UniversityShijiazhuang050043 China 2Department of Computer Science and Engineering Huizhou UniversityHuizhou516007 China 3College of Engineering California State UniversityLong BeachCA90185USA

With the explosive growth of surveillance video data,browsing videos quickly and effectively has become an urgent *** key frame extraction has received widespread attention as an effective ***,accurately capturing the local motion state changes of moving objects in the video is still challenging in key frame *** target center offset can reflect the change of its motion *** observation proposed a novel key frame extraction method based on moving objects center offset in this *** proposed method utilizes the center offset to obtain the global and local motion state information of moving objects,and meanwhile,selects the video frame where the center offset curve changes suddenly as the key *** processing effectively overcomes the inaccuracy of traditional key frame extraction ***,extracting the center point of each ***,calculating the center point offset of each frame and forming the center offset curve by connecting the center offset of each ***,extracting candidate key frames and optimizing them to generate final key *** experimental results demonstrate that the proposed method outperforms contrast methods to capturing the local motion state changes of moving objects.

关键词： Center offset local motion key frame extraction moving object detection

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快速数据读取技术的实现

华中科技大学学报（自然科学版） 2007年第2期35卷 19-21页

作者：蔡昭权惠州学院网络中心广东惠州516001

为提高通过Web Services获取数据的速度,提出了一种基于.Net的AppDomain技术和远程对象调用技术,突破Windows系统的线程限制,以最快的速度从数据供应商那里获取数据的一个业务无关模型,并对此模型的一个典型应用——股票系统的应用进行... 详细信息

为提高通过Web Services获取数据的速度,提出了一种基于.Net的AppDomain技术和远程对象调用技术,突破Windows系统的线程限制,以最快的速度从数据供应商那里获取数据的一个业务无关模型,并对此模型的一个典型应用——股票系统的应用进行了讨论.基于此模型,用户可以自由设定并发线程的数目来获取数据,不必受到并发线程数目的限制,也不必修改***文件.在IBM xSeries X206m服务器上测试结果表明,与不用Domain技术测试比较,可以提高20倍左右的效率.同时,此模型可以经过简单的修改,应用在各种对速度有严格要求的系统中.

关键词：数据读取技术多线程队列远程对象 Web服务

Key Frame Extraction Algorithm of Surveillance Video Based on Quaternion Fourier Significance Detection

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Journal of New Media 2022年第1期4卷 1-11页

作者： Zhang Yunzuo Zhang Jiayu cai zhaoquan School of Information Science and Technology Shijiazhuang Tiedao UniversityShijiazhuang050043HebeiChina Shanwei Institute of Technology Shanwei516600GuangdongChina

With the improvement of people’s security awareness,numerous monitoring equipment has been put into use,resulting in the explosive growth of surveillance video *** frame extraction technology is a paramount technology for improving video storage efficiency and enhancing the accuracy of video *** can extract key frame sets that can express video content from massive ***,the existing key frame extraction algorithms of surveillance video still have deficiencies,such as the destruction of image information integrity and the inability to extract key frames *** this end,this paper proposes a key frame extraction algorithm of surveillance video based on quaternion Fourier saliency ***,the algorithm used colors,and intensity features to perform quaternion Fourier transform on surveillance video ***,the phase spectrum of the quaternion Fourier transformed image was obtained,and he image visual saliency map was obtained according to the quaternion Fourier phase ***,the image visual saliency map of two adjacent frames is used to characterize the change of target motion ***,the frames that can accurately express the motion state of the target are selected as key *** experimental results show that the method proposed in this paper can accurately capture the changes of the local motion state of the target while maintaining the integrity of the image information.

关键词： Quaternion fourier transform phase spectrum image saliency map motion status

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混合基于行和7/5提升格式的小波变换算法

中山大学学报（自然科学版） 2016年第5期55卷 52-56页

作者：蔡昭权惠州学院科研处广东惠州516007

针对传统小波变换算法对内存需求大和计算复杂度高的问题,提出了混合基于行和7/5提升格式的小波变换算法。该算法采用基于行的小波变换,减少图像压缩的存储容量,利用BT7/5滤波器实现提升格式以减小计算复杂度。实验结果表明,该算法具有... 详细信息

针对传统小波变换算法对内存需求大和计算复杂度高的问题,提出了混合基于行和7/5提升格式的小波变换算法。该算法采用基于行的小波变换,减少图像压缩的存储容量,利用BT7/5滤波器实现提升格式以减小计算复杂度。实验结果表明,该算法具有与JPEG2000相近的压缩效果,比传统的小波变换算法具有更小的内存需求,比其他基于行的提升小波算法具有更低的计算复杂度。

关键词：图像压缩基于行的小波变换提升格式

Ant Colony Optimization Based on Adaptive Volatility Rate of Pheromone Trail

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International Journal of Communications, Network and System Sciences 2009年第8期2卷 792-796页

作者： zhaoquan cai Han HUANG Yong QIN Xianheng MA 不详

Ant colony optimization (ACO) has been proved to be one of the best performing algorithms for NP-hard problems as TSP. The volatility rate of pheromone trail is one of the main parameters in ACO algorithms. It is usually set experimentally in the literatures for the application of ACO. The present paper first proposes an adaptive strategy for the volatility rate of pheromone trail according to the quality of the solutions found by artificial ants. Second, the strategy is combined with the setting of other parameters to form a new ACO method. Then, the proposed algorithm can be proved to converge to the global optimal solution. Finally, the experimental results of computing traveling salesman problems and film-copy deliverer problems also indicate that the proposed ACO approach is more effective than other ant methods and non-ant methods.

关键词： Ant Colony Optimization (ACO) Adaptive Volatility Rate Pheromone Trail

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基于WWF的自定义工作流研究与实现

计算机与应用化学 2008年第10期25卷 1280-1282页

作者：蔡昭权惠州学院网络中心广东惠州516015 清华大学计算机科学与技术系北京100084

针对办公自动化系统的工作流标准不统一、很难整合的问题,提出一种利用微软WWF的核心技术,实现工作流设计和状态跟踪组件的思路和方法,在此组件的基础上,可以很容易实现工作流的编辑、状态跟踪、流程设置,降低了工作流设计复杂度和操作... 详细信息

针对办公自动化系统的工作流标准不统一、很难整合的问题,提出一种利用微软WWF的核心技术,实现工作流设计和状态跟踪组件的思路和方法,在此组件的基础上,可以很容易实现工作流的编辑、状态跟踪、流程设置,降低了工作流设计复杂度和操作的难度。结果表明,利用此组件的工作流适用范围广泛,集成容易、操作简单。

关键词：视窗工作流基石 NET系统自定义工作流办公自动化流程类

基于物联网的异构机织设备数据采集系统关键技术研究

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现代纺织技术 2016年第6期24卷 37-42页

作者：李慧蔡昭权惠州学院计算机科学系广东惠州516007 华南理工大学计算机科学与工程学院广州510006

针对目前机织设备在织造企业中的应用呈现出品牌多、型号差异较大、技术不统一等问题,提出通用化的机织设备数据采集方法。基于该方法,研发异构机织设备数据采集系统,实现对机织设备行业现场数字信息的实时采集和监控,解决了对异构机织... 详细信息

针对目前机织设备在织造企业中的应用呈现出品牌多、型号差异较大、技术不统一等问题,提出通用化的机织设备数据采集方法。基于该方法,研发异构机织设备数据采集系统,实现对机织设备行业现场数字信息的实时采集和监控,解决了对异构机织设备实时织造数据进行信息化的难题,使客户端能够快速、准确地了解最新的设备织造情况。最后文章提出的关键技术和具体的实现策略,为机织设备物联网提供了有益的借鉴。

关键词：异构机织设备数据采集物联网接口植入技术 Web平台