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Foreground Detection Based on Nonlinear Independent Component Analysis
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作者 韩光 汪晋宽 才溪 《Journal of Donghua University(English Edition)》 EI CAS 2016年第6期831-835,共5页
Motionless foreground objects are key targets in applications of home care monitoring and abandoned object detection,and pose a great challenge to foreground detection.Most algorithms incorporate the motionless foregr... Motionless foreground objects are key targets in applications of home care monitoring and abandoned object detection,and pose a great challenge to foreground detection.Most algorithms incorporate the motionless foreground objects into their background models because they have to adapt to environmental changes.To overcome this challenge,a foreground detection method based on nonlinear independent component analysis(ICA) was proposed.Considering that each video frame was actually a nonlinear mixture of the background image and the foreground image,the nonlinear ICA was employed to accurately separate the independent components from each frame.Then,the entropy of grayscale image was calculated to classify which resulting independent component was the foreground image.The proposed nonlinear ICA model was trained offline and this model was not updated online,so the method can cope with the motionless foreground objects.Experimental results demonstrate that,the method achieves remarkable results and outperforms several advanced methods in dealing with the motionless foreground objects. 展开更多
关键词 foreground detection nonlinear independent component analysis(ICA) motionless foreground objects
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Foregrounding analysis of The Room
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作者 袁浩 李雯 《中国校外教育》 2011年第S1期25-25,共1页
Most of the researches are based on the conversation analysis,turn-taking analysis,and there are a few researches on drama from the perspective of foregrounding stylistics.This essay will combine linguistics and styli... Most of the researches are based on the conversation analysis,turn-taking analysis,and there are a few researches on drama from the perspective of foregrounding stylistics.This essay will combine linguistics and stylistics theories for analyzing the first absurd play of Harold Pinter-The Room,trying to create a new mode to study the stylistic features of drama text. 展开更多
关键词 STYLISTICS foregroundING theories SPEECH ACT theor
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Foregrounding Features in the Background Introduction Partin Oliver Twist
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作者 刘婷 《海外英语》 2019年第12期206-207,共2页
The theory of foregrounding is a theory of crucial and critical importance in Stylistics.In stylistic analysis,foregrounding refers to the work with literary and artistic importance,especially the deviation of languag... The theory of foregrounding is a theory of crucial and critical importance in Stylistics.In stylistic analysis,foregrounding refers to the work with literary and artistic importance,especially the deviation of language,prominent in the background which belongs to the normal conventions of language.Charles Dickens is one of the greatest and critical realist writers of the Victorian Age in British.In his representative work Oliver Twist,by the bitter exposure of the terrible conditions in the English workhouse of the time and the cruel treatment of a poor orphan by all sorts of philanthropist,the author criticizes harshly the dark and criminal underworld life and succeeds in calling forth the reader's sympathy for the down-trodden people of the lower classes,especially the children.Through his master skill of the use of foregrounding,Dickens constructs various kinds of background introductions where is full of suspense and symbol,and it seems that all the backgrounds are inseparably closed to the fate of the protagonist,leaving a clue for the reader to pick out the main idea of the total work.This thesis firstly reviews the theory of foregrounding and then analyses the foregrounding using in the background introductions in Oliver Twist,presenting a holistic overview the aim of the author and what he aims at expressing through the intended background description. 展开更多
关键词 Oliver TWIST foregroundING BACKGROUND DESCRIPTION
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Analysis on Pan with us:From the Foregrounding and Cohesion Perspective
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作者 缪潍潍 《海外英语》 2011年第11X期255-257,共3页
The thesis intends to analyze Robert Frost's Pan with us from the foregrounding and cohesion perspective,trying to demonstrate how the poem reflects the poet's the thoughts about the relationship between natur... The thesis intends to analyze Robert Frost's Pan with us from the foregrounding and cohesion perspective,trying to demonstrate how the poem reflects the poet's the thoughts about the relationship between nature and man,as well as his attitudes towards life. 展开更多
关键词 foregroundING COHESION NATURE MAN
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A 16-bit 1 MSPS SAR ADC with foreground calibration and residual voltage shift strategy
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作者 Xian Zhang Xiaodong Cao Xuelian Zhang 《Journal of Semiconductors》 EI CAS CSCD 2020年第12期41-49,共9页
In this paper,a 16-bit 1MSPS foreground calibration successive approximation register analog-to-digital converter(SAR ADC)is developed by the CMOS 0.25μm process.An on-chip all-digital foreground weights calibration ... In this paper,a 16-bit 1MSPS foreground calibration successive approximation register analog-to-digital converter(SAR ADC)is developed by the CMOS 0.25μm process.An on-chip all-digital foreground weights calibration technique integrating self-calibration weight measurement with PN port auto-balance technique is designed to improve the performance and lower the costs of the developed SAR ADC.The SAR ADC has a chip area of 2.7×2.4 mm^2,and consumes only 100μW at the 2.5 V supply voltage with 100 KSPS.The INL and DNL are both less than 0.5 LSB. 展开更多
关键词 foreground all-digital calibration RS strategy RS-based dither auto-zero comparator SAR ADC
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The Lateral Occipital Complex is Activated by Melody with Accompaniment: Foreground and Background Segregation in Auditory Processing
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作者 Masayuki Satoh Katsuhiko Takeda +1 位作者 Ken Nagata Hidekazu Tomimoto 《Journal of Behavioral and Brain Science》 2011年第3期94-101,共8页
Objective: Most of the western music consists of a melody and an accompaniment. The melody is referred to as the foreground, with the accompaniment the background. In visual processing, the lateral occipital complex (... Objective: Most of the western music consists of a melody and an accompaniment. The melody is referred to as the foreground, with the accompaniment the background. In visual processing, the lateral occipital complex (LOC) is known to participate in foreground and background segregation. We investigated the role of LOC in music processing with use of positron emission tomography (PET). Method: Musically na?ve subjects listened to unfamiliar novel melodies with (accompaniment condition) and without the accompaniment (melodic condition). Using a PET subtraction technique, we studied changes in regional cerebral blood flow (rCBF) during the accompaniment condition compared to the melodic condition. Results: The accompanyment condition was associated with bilateral increase of rCBF at the lateral and medial surfaces of both occipital lobes, medial parts of fusiform gyri, cingulate gyri, precentral gyri, insular cortices, and cerebellum. During the melodic condition, the activation at the anterior and posterior portions of the temporal lobes, medial surface of the frontal lobes, inferior frontal gyri, orbitofrontal cortices, inferior parietal lobules, and cerebellum was observed. Conclusions: The LOC participates in recognition of melody with accompaniment, a phenomenon that can be regarded as foreground and background segregation in auditory processing. The fusiform cortex which was known to participate in the color recognition might be activated by the recognition of flourish sounds by the accompaniment, compared to melodic condition. It is supposed that the LOC and fusiform cortex play similar functions beyond the difference of sensory modalities. 展开更多
关键词 Music Positron Emission Tomography (PET) MELODY ACCOMPANIMENT foreground and BACKGROUND SEGREGATION Lateral OCCIPITAL Complex (LOC)
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A FAST FOREGROUND DIGITAL CALIBRATION TECHNIQUE FOR PIPELINED ADC
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作者 Wang Yu Yang Haigang +2 位作者 Cheng Xin Liu Fei Yin Tao 《Journal of Electronics(China)》 2012年第5期445-450,共6页
Digital calibration techniques are widely developed to cancel the non-idealities of the pipelined Analog-to-Digital Converters (ADCs). This letter presents a fast foreground digital calibration technique based on the ... Digital calibration techniques are widely developed to cancel the non-idealities of the pipelined Analog-to-Digital Converters (ADCs). This letter presents a fast foreground digital calibration technique based on the analysis of error sources which influence the resolution of pipelined ADCs. This method estimates the gain error of the ADC prototype quickly and calibrates the ADC simultaneously in the operation time. Finally, a 10 bit, 100 Ms/s pipelined ADC is implemented and calibrated. The simulation results show that the digital calibration technique has its efficiency with fewer operation cycles. 展开更多
关键词 Pipelined Analog-to-Digital Converter (ADC) foreground digital calibration Gain error Error estimation
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On Foreground-Background and Transitivity in Chinese Shiwu(事物) Expository Discourse
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作者 XU Ai-gai 《Journal of Literature and Art Studies》 2019年第11期1180-1187,共8页
Foreground-background and transitivity are very important in discourse linguistics,the features of which vary from types of discourse.Chinese shiwu expository discourse has its own semantic features about foreground-b... Foreground-background and transitivity are very important in discourse linguistics,the features of which vary from types of discourse.Chinese shiwu expository discourse has its own semantic features about foreground-background;and this type of discourse is characterized by low transitivity,especially in foreground. 展开更多
关键词 CHINESE shiwu expository DISCOURSE Explanatory object foreground BACKGROUND Low TRANSITIVITY
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An Analysis of Sweet and Low from the Perspective of Foregrounding
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作者 马晓峰 《海外英语》 2014年第20期214-215,219,共3页
In Sweet and Low,it illustrates a beautiful and awaiting image with simple words and only 16 lines. The analysis of Sweet and Low from foregrounding,especially from linguistic overregularity is been concentrated on to... In Sweet and Low,it illustrates a beautiful and awaiting image with simple words and only 16 lines. The analysis of Sweet and Low from foregrounding,especially from linguistic overregularity is been concentrated on to explore the theme and image in deep and raise the ability of appreciation for the poem. 展开更多
关键词 SweetandLow foregroundING LINGUISTIC overregularit
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Foregrounded Beauty: A Brief Analysis of Cummings' Typical Poems from the Perspective of Stylistics
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作者 赵文荣 《海外英语》 2014年第16期192-194,212,共4页
E. E. Cummings is one of the representatives of American modern experimental poets whose poems are well-known for the unique style. Cummings endeavors to make his poems be different from other poets'. He broke the... E. E. Cummings is one of the representatives of American modern experimental poets whose poems are well-known for the unique style. Cummings endeavors to make his poems be different from other poets'. He broke the traditional way of writing poems, invented in the changing of lines of the poem and the spelling of the words in the poem, thus to make his personal poem style distinctive. Therefore, standing on the stylistic point of view, this paper makes a brief analysis on Cummings' typical poems from foregrounding perspective. 展开更多
关键词 CUMMINGS STYLISTICS foregroundING
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The Form of Literary Translation——“Foregrounding Translation” and the Translator's Poetic Entry
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作者 王闻 《科技信息》 2013年第22期187-188,共2页
From the epistemological perspective translating sense is to pursue truth,while translating flavor is to pursue beauty.Rational knowledge is aimed at"fidelity";perceptive knowledge the"beauty".Lite... From the epistemological perspective translating sense is to pursue truth,while translating flavor is to pursue beauty.Rational knowledge is aimed at"fidelity";perceptive knowledge the"beauty".Literary language approaches fidelity because of beauty while non-literary language approaches beauty because of its fidelity. 展开更多
关键词 英语教学 教学方法 阅读教学 课外阅读
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A Linguistic Analysis of the Foregrounding Features in Seeing People off
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作者 黄鸿利 《神州》 2014年第11期137-137,共1页
Foregrounding Feature is a very obvious phenomenon in literature work.This paper aims to analyze the foregrounding features(hyperbole,irony,symbolism,repetition and parallelism)in the story Seeing People off based on ... Foregrounding Feature is a very obvious phenomenon in literature work.This paper aims to analyze the foregrounding features(hyperbole,irony,symbolism,repetition and parallelism)in the story Seeing People off based on the Foregrounding Theory. 展开更多
关键词 foregrounding feature hyperbole irony symbolism repetition
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Robust video foreground segmentation and face recognition 被引量:6
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作者 管业鹏 《Journal of Shanghai University(English Edition)》 CAS 2009年第4期311-315,共5页
Face recognition provides a natural visual interface for human computer interaction(HCI) applications.The process of face recognition,however,is inhibited by variations in the appearance of face images caused by chang... Face recognition provides a natural visual interface for human computer interaction(HCI) applications.The process of face recognition,however,is inhibited by variations in the appearance of face images caused by changes in lighting,expression,viewpoint,aging and introduction of occlusion.Although various algorithms have been presented for face recognition,face recognition is still a very challenging topic.A novel approach of real time face recognition for HCI is proposed in the paper.In view of the limits of the popular approaches to foreground segmentation,wavelet multi-scale transform based background subtraction is developed to extract foreground objects.The optimal selection of the threshold is automatically determined,which does not require any complex supervised training or manual experimental calibration.A robust real time face recognition algorithm is presented,which combines the projection matrixes without iteration and kernel Fisher discriminant analysis(KFDA) to overcome some difficulties existing in the real face recognition.Superior performance of the proposed algorithm is demonstrated by comparing with other algorithms through experiments.The proposed algorithm can also be applied to the video image sequences of natural HCI. 展开更多
关键词 面部识别技术 视频图像序列 分割 FISHER判别分析 识别算法 人机交互 人脸识别 多尺度变换
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A Nonparametric Approach to Foreground Detection in Dynamic Backgrounds 被引量:3
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作者 LIAO Juan JIANG Dengbiao +2 位作者 LI Bo RUAN Yaduan CHEN Qimei 《China Communications》 SCIE CSCD 2015年第2期32-39,共8页
Foreground detection is a fundamental step in visual surveillance.However,accurate foreground detection is still a challenging task especially in dynamic backgrounds.In this paper,we present a nonparametric approach t... Foreground detection is a fundamental step in visual surveillance.However,accurate foreground detection is still a challenging task especially in dynamic backgrounds.In this paper,we present a nonparametric approach to foreground detection in dynamic backgrounds.It uses a history of recently pixel values to estimate background model.Besides,the adaptive threshold and spatial coherence are introduced to enhance robustness against false detections.Experimental results indicate that our approach achieves better performance in dynamic backgrounds compared with several approaches. 展开更多
关键词 错误检测 非参数方法 动态背景 空间相干性 自适应阈值 视频监控 背景模型 历史记录
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ForegroundNet:一种基于语义与动态特征的前景检测算法
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作者 赖少川 王佳欣 马翠霞 《图学学报》 CSCD 北大核心 2020年第3期409-416,共8页
针对以往的前景检测方法对场景信息依赖较多的问题,提出了一种实时的无需迭代更新背景模型的前景检测深度学习模型ForegroundNet。ForegroundNet首先通过骨干网络从当前图像和辅助图像中提取语义特征,辅助图像为相邻的图像帧或者是自动... 针对以往的前景检测方法对场景信息依赖较多的问题,提出了一种实时的无需迭代更新背景模型的前景检测深度学习模型ForegroundNet。ForegroundNet首先通过骨干网络从当前图像和辅助图像中提取语义特征,辅助图像为相邻的图像帧或者是自动生成的视频背景图像;然后将提取得到的特征输入到包含短连接的反卷积网络中,使得最终特征图在与输入图像具有相同的大小,并且包含不同尺度的语义及动态特征;最后使用softmax层进行二值分类,得到最终检测结果。在CDNet数据集上进行的实验结果表明,相比于当前F值为0.82的次优方法,ForegroundNet能够获得0.94的F值,具有更高的检测精度;同时ForegroundNet检测速度达到123 fps,具有良好的实时性。 展开更多
关键词 前景检测 深度学习 计算机视觉 卷积神经网络 运动分割
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关于“突出”(foregrounding)的三个关键问题 被引量:1
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作者 龚晓斌 《江南大学学报(人文社会科学版)》 2002年第4期89-92,共4页
突出既包括对常规语言的偏离 /变异 ,也包括对常规形式的使用或频繁使用 ,即广义上的排比。突出与常规是相对而言的 ,尤其是在标准语言和诗学语言之间。诗歌语言中对常规语言的偏离在诗歌范畴里是常规 ,而不是突出。因此 ,突出是有相对... 突出既包括对常规语言的偏离 /变异 ,也包括对常规形式的使用或频繁使用 ,即广义上的排比。突出与常规是相对而言的 ,尤其是在标准语言和诗学语言之间。诗歌语言中对常规语言的偏离在诗歌范畴里是常规 ,而不是突出。因此 ,突出是有相对性的。值得注意的是 ,并非所有的突出都是文体特征 ,只有那些被意义促动的特征才是具有艺术性的文体特征。 展开更多
关键词 突出 常规 偏离 排比 文体特征
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A Literature Review of the Research On Foregrounding in China
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作者 杨凡 《科技信息》 2009年第24期I0103-I0103,共1页
This paper aims to make a concise summary of the research on foregrounding in China over the past decade. The research on foregrounding in China can be mainly classified into four categories according to different foc... This paper aims to make a concise summary of the research on foregrounding in China over the past decade. The research on foregrounding in China can be mainly classified into four categories according to different focuses. 展开更多
关键词 语言学 前景化 发展 文学作品
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一种16位电流舵DAC的高精度前台校准方法
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作者 张妍 蒲佳 +2 位作者 何善亮 何浩江 曹文涛 《固体电子学研究与进展》 CAS 2024年第2期143-148,共6页
基于28 nm CMOS工艺,采用一种高精度的前台校准技术设计了一款16 bit电流舵数模转换器(Digitalto-analog converter,DAC)电路。该前台校准算法对16 bit数据对应的所有电流源进行校准,并且使用的电流源只有两种大小,降低校准难度的同时... 基于28 nm CMOS工艺,采用一种高精度的前台校准技术设计了一款16 bit电流舵数模转换器(Digitalto-analog converter,DAC)电路。该前台校准算法对16 bit数据对应的所有电流源进行校准,并且使用的电流源只有两种大小,降低校准难度的同时也提升了校准的精度。该校准电路引入了两种校准补充电流,分别用于温度和输出电流变化引起电流源失配的补偿,进一步减小了DAC电流源的失配,有效提高了DAC的整体性能。采用校准后,在-40~85℃温度范围内,微分非线性≤0.8 LSB,积分非线性≤2.0 LSB,200 MHz输出信号下无杂散动态范围≥75.3 dB。该校准方法提高了DAC的温度稳定性。 展开更多
关键词 高精度校准 前台校准 电流源失配 电流舵DAC
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Research Progress on Nutritional Requirements of Carp
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作者 Yina LU 《Asian Agricultural Research》 2024年第1期37-39,43,共4页
Carp is a temperate freshwater fish native to Asia,distributed in all regions of the world except Australia and South America.With the improvement of comprehensive and healthy breeding technology of carp,the unit yiel... Carp is a temperate freshwater fish native to Asia,distributed in all regions of the world except Australia and South America.With the improvement of comprehensive and healthy breeding technology of carp,the unit yield has been greatly increased mainly due to the exten-sive use of compound feed.In this study,the nutritional requirements of carp were summarized from the aspects of protein,amino acids,fat,carbohydrate,calcium and phosphorus,vitamins and taurine.This study provides a certain theoretical reference for scientific formula of carp feed. 展开更多
关键词 CARP Nutritional requirements foreground
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基于多视图前景分割的电网设施三维数字化重建
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作者 刘宇航 于雅雯 +1 位作者 皮谭昕 武昕 《电网技术》 EI CSCD 北大核心 2024年第2期710-720,共11页
电网设施高保真数字化建模和可视化是构建数字孪生电网,推动新型电力系统建设的重要步骤。为解决手工建模方式的诸多弊端,满足数字孪生电网设施三维可视化需求,提出了一种基于多视图前景分割的电网设施三维数字化重建方法。基于深度学... 电网设施高保真数字化建模和可视化是构建数字孪生电网,推动新型电力系统建设的重要步骤。为解决手工建模方式的诸多弊端,满足数字孪生电网设施三维可视化需求,提出了一种基于多视图前景分割的电网设施三维数字化重建方法。基于深度学习网络结合前景分割算法,构建电网设施检测定位与前景分割模型,将相机原始多视图转化为待建设施前景图像,减少图像复杂背景带来的特征误匹配、模型体外噪声增多等问题的影响,提高重建视觉效果。以运动恢复结构为基础原理,提出基于改进加速稳健特征–随机抽样一致性(speeded-up robust features-random sample consensus,SURF-RANSAC)算法的高质量相机位姿估计方法与稀疏点云稠密化方案,最终形成了一种面向分布式电网设施的统一结构化静态模型重建方式。通过实拍图像构建设施重建数据集,分别对电力变压器、变压器绕组、高压真空交流断路器3种典型电网设施进行仿真重建,均取得良好重建视觉效果和较低的重投影误差,验证了方法的通用性和有效性。所提方法不仅为分布式设施在虚拟空间的统一表征、状态监测提供三维模型支撑,也为供需侧电网设施的跨时空互动及供需平衡调节实现提供可能。 展开更多
关键词 目标检测 前景分割 运动恢复结构 三维重建 数字孪生电网
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