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基于结构信息建模和判别稀疏的红外小目标跟踪方法 被引量:2
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作者 木尼拉·塔里甫 安尼瓦尔·加马力 亚森·艾则孜 《光学技术》 CAS CSCD 北大核心 2021年第5期622-631,共10页
为了提高背景杂波和成像噪声等干扰下红外小目标的跟踪精度,提出了一种基于结构信息建模和判别稀疏的红外小目标跟踪方法。小目标信号在广义高斯目标超完备字典上被稀疏分解,以便从受噪声干扰和杂波污染的红外图像中提取出小目标的空间... 为了提高背景杂波和成像噪声等干扰下红外小目标的跟踪精度,提出了一种基于结构信息建模和判别稀疏的红外小目标跟踪方法。小目标信号在广义高斯目标超完备字典上被稀疏分解,以便从受噪声干扰和杂波污染的红外图像中提取出小目标的空间结构信息;设计了转移受限粒子滤波跟踪算法,以提高粒子的采样概率;在转移受限粒子滤波框架下,基于判别稀疏表示和L1范数最小化框架求解候选目标的稀疏系数,实现小目标的跟踪。基于各种红外序列对所提方法进行实验论证,实验结果表明,所提方法能够在杂波和噪声较大的干扰下稳定地跟踪小目标,其中心误差、重叠率和平均视频播放帧率分别为3pixel、0.7和40fps,均优于其他对比方法,且具有较强的鲁棒性。 展开更多
关键词 红外小目标跟踪 结构信息建模 广义高斯目标超完备字典 判别稀疏表示 转移受限粒子滤波框架
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Evaluation of a Novel Approach for Automated Inventive Conceptual Design of Building Structures
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作者 Ivan Renev 《Journal of Civil Engineering and Architecture》 2018年第8期550-562,共13页
This research is dedicated to assessment of a method that was earlier proposed and developed in order to increase the degree of automation and software involvement into conceptual decision making during design of stru... This research is dedicated to assessment of a method that was earlier proposed and developed in order to increase the degree of automation and software involvement into conceptual decision making during design of structural elements of buildings. Such instruments of the theory of inventive problem solving as contradiction and function analysis and trimming formed the basis of the proposed approach that was realized in a modern building information modeling software. The common logic of the approach is also provided in the article. Qualitative research methods and particularly collecting, analyzing and interpreting data were applied in this research. Firstly, a literature review of indexed journal articles in the field of the study was performed and some trends for possible development of the topic were identified. Secondly, a survey of potential users of the methodology was conducted and analyzed. The questionnaire results showed that the suggested method and its technical realization gained attraction among respondents, however, some of them are rather cautious regarding application of the approach potentials in their practice. The paper ends with evaluation results discussion, conclusion and proposals for further research. 展开更多
关键词 BUILDINGS STRUCTURES conceptual design AUTOMATION TRIZ (theory of inventive problem solving) function analysis.
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