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1. 发明授权

US5587927A Detecting apparatus for detecting a contour of a moving region in a dynamic image 失效
标题翻译：用于检测动态图像中的运动区域的轮廓的检测装置
公开(公告)号：US5587927A
公开(公告)日：1996-12-24
申请号：US178163
申请日：1994-01-06
申请人： Kenji Nagao , Masaki Sohma , Shigeru Ando , Michihiro Kobayakawa
发明人： Kenji Nagao , Masaki Sohma , Shigeru Ando , Michihiro Kobayakawa
IPC分类号： G06T7/60 , G06T5/00 , G06K9/46
CPC分类号： G06T7/0083 , G06T7/20
摘要： A detecting apparatus consists of a covariance calculating section for calculating covariances Sij=.intg..intg..intg.(fi*fj)dxdydt (i,j.epsilon.{x,y,t}) with gradients fx, fy and ft of variable densities of pixels, a characteristic value calculating section for calculating characteristic values by utilizing the covariances to express characteristic changes in the variable densities of the pixels, a first-stage pixel classifying section for classifying the pixels into a FIX type denoting that an observed pixel is positioned in a static region of the dynamic image, a MOT type denoting that the observed pixel is positioned inside the moving region and an ACR type denoting that the observed pixel is positioned in a boundary region between the moving and the static regions, a second-stage pixel classifying section for re-classifying the pixels to match a classification type of the observed pixel with those of pixels surrounding the observed pixel, a contour candidate limiting section for limiting a region occupied by pixels re-classified into the ACR type as a candidate region, and a contour drawing section for drawing a contour of the moving section passing through a middle portion of the candidate region.
摘要翻译：一个检测装置包括一个协方差计算部分，用于以像素的可变密度的梯度fx，fy和ft计算协方差Sij = INTEGRAL INTEGRAL INTEGRAL（fi * fj）dxdydt（i，j epsilon {x，y，t}）特征值计算部分，用于通过利用协方差来表示像素的可变密度中的特征变化来计算特征值;第一级像素分类部分，用于将像素分类为表示观察像素位于静态区域中的FIX类型动态图像的MOT类型，表示观察到的像素位于移动区域内，ACR类型表示观察像素位于移动和静态区域之间的边界区域中;第二级像素分类部分，用于将像素重新分类以将观察像素的分类类型与围绕观察像素的像素的分类类型相匹配，轮廓候选限制部离子，用于限制被重新分类为ACR类型的像素占据的区域作为候选区域;以及轮廓描绘部分，用于绘制通过候选区域的中间部分的移动部分的轮廓。

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