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1IntroductionBackground subtraction methods are extensively ex-ploited for moving object detection in videos in manyapplications ,such as traffic monitoring[1],human mo-tion capture[2]and video surveillance[3]. The centralidea behind such methods is to segment foreground ini mage sequences taken from a fixed camera by com-paring each newframe to a model of the scene back-ground . Therefore , correctly and efficiently modelingand updating the background model is one of the mostchallenging aspec… 相似文献
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运用文献资料法，在对内隐学习的相关理论进行文献综述的基础上，对内隐学习能够克服篮球比赛中投篮技术产生的Choking的假设进行了探讨，以便在此基础上作进一步的理论研究和实证分析显示。 相似文献
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异军突起苏联新闻摄影是多民族的,摄影记者不可避免地在作品中表现出民族特征。从60年代后5年起,苏联新闻摄影中立陶宛学派异军突起,以自己独特的鲜明风格与其它学派相区别,赢得世界摄坛的关注,引来各国摄影杂志接二连三的介绍和评论。那时的年轻摄影爱好者——卡乌纳斯基摄影俱乐部的成员苏特斯库,昆丘斯及其同事们都表现了创作的新观念,把他们共和国普通人的日常生活——劳动、休息、农村中的劳作纪录在照片上,创作了本民族人民的肖像。他们的作品被人们誉为抒情报道摄影,或者艺术新闻摄影。 相似文献
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This paper explores brain CT slices segmentation technique and some related problems, including contours segmentation algorithms,
edge detector, algorithm evaluation and experimental results. This article describes a method for contour-based segmentation
of anatomical structures in 3D medical data sets. With this method, the user manually traces one or more 2D contours of an
anatomical structure of interest on parallel planes arbitrarily cutting the data set. The experimental results showed the
segmentation based on 3D brain volume and 2D CT slices. The main creative contributions in this paper are: (1) contours segmentation
algorithm; (2) edge detector; (3) algorithm evaluation.
Project (No.69931010) supported by the National Natural Science Foundation of China 相似文献
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1 Introduction Withtherapiddevelopmentofhyperspectralremotesensing(RS)informationacquisitiontechniques,manyhyperspectralRSinformationsources,forexample,AVIRIS,OMIS,PHI,etc.,havebecomeavailable.ThisstimulateswideapplicationsandrapidprogressofhyperspectralRSinvariousfieldssuchasresources,environments,urbandevelopment,ecologyandothers[1,2].WiththeaccumulationofvasthyperspectralRSinformation,itissignificanttoretrieveinterestedimagesforgiventasksquicklyfromlargeinformationsystems(ordataba… 相似文献
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This paper presents a methodology for off-line handwritten Chinese character recognition based on mergence of consecutive segments of adaptive duration. The handwritten Chinese character string is partitioned into a sequence of consecutive segments,which are combined to implement dissimilarity evaluation within a sliding window whose durations are determined adaptively by the integration of shapes and context of evaluations. The average stroke width is estimated for the handwritten Chinese character string,and a set of candidate character segmentation boundaries is found by using the integration of pixel and stroke features. The final decisions on segmentation and recognition are made under minimal arithmetical mean dissimilarities. Experiments proved that the proposed approach of adaptive duration outperforms the method of fixed duration,and is very effective for the recognition of overlapped,broken,touched,loosely configured Chinese characters. 相似文献
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一元二次方程x2＋px＋q=0,（ax2＋bx＋c=0,a≠0,可以化成这种形式）的根设为x1,x2,方程本身是一个等式,它反映的是根与p,q之间所具有的数量关系,再由韦达定理得x1＋x2=-p,x1·x2=q． 相似文献
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换元法是数学中一种重要的解题方法,它的基本思想是用新的变量替换原来的一些量,使较为繁杂的数学问题得到简化.下面举例说明换元法在初中数学解题中的应用. 相似文献
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施鹏飞 《体育科技文献通报》2013,21(4):109-111
本研究基于高校校园赛事和品牌的特有内涵,结合企业宣传受众相对集中的特点等进行分析,构建校园篮球赛事品牌化是可行的和必要的。她提升了篮球运动的感召力和吸引力,使更多的学生参与到运动中,并从运动中得到不同程度的满足。同时,通过校园篮球赛事品牌化的建立获得更多商业赞助,保证校园课外体育活动的有效开展,从而带动校园相关体育赛事的推进,为学生创造良好的体育氛围,推动校园体育文化的建设。 相似文献