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    • 7. 发明申请
    • EFFICIENT ENCODING OF MULTIPLE VIEWS
    • 有效编辑多个视图
    • WO2007113725A2
    • 2007-10-11
    • PCT/IB2007/051031
    • 2007-03-23
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.BRULS, Wilhelmus, H., A.VAREKAMP, ChristiaanBRASPENNING, Ralph
    • BRULS, Wilhelmus, H., A.VAREKAMP, ChristiaanBRASPENNING, Ralph
    • H04N7/26H04N13/00
    • H04N19/597H04N13/128H04N13/161H04N19/00H04N2213/005
    • A new method of encoding multiple view image information into an image signal (200) is described, comprising: adding to the image signal (200) a first image (220) of pixel values representing one or more objects (110, 112) captured by a first camera (101); - adding to the image signal (200) a map (222) comprising for respective sets of pixels of the first image (220) respective values, representing a three-dimensional position in space of a region of the one or more objects (110, 112) represented by the respective set of pixels; and adding to the image signal (200) a partial representation (223) of a second image (224) of pixel values representing one or more objects (110, 112) captured by a second camera (102), the partial representation (223) comprising at least information of the majority of the pixels representing regions of the one or more objects (110, 112) not visible to the first camera (101). Advantages are less required information for higher precision and increased usability.
    • 描述了将多个视图图像信息编码成图像信号(200)的新方法,包括:向图像信号(200)添加表示由一个或多个对象(110,112)捕获的一个或多个对象(110,112)的像素值的第一图像(220) 第一相机(101); - 对所述图像信号(200)添加映射(222),其包括对于所述第一图像(220)的各个像素集合各自的值,其表示所述一个或多个对象(110,110)的区域的空间中的三维位置, 112)由相应的像素集合表示; 并且向所述图像信号(200)添加表示由第二相机(102)捕获的一个或多个对象(110,112)的像素值的第二图像(224)的部分表示(223),所述部分表示(223) 至少包括表示第一相机(101)不可见的一个或多个对象(110,112)的区域的大多数像素的信息。 优点是要求更高的信息,更高的精度和更高的可用性。
    • 8. 发明申请
    • MOTION VECTOR FIELD PROJECTION DEALING WITH COVERING AND UNCOVERING
    • 运动矢量场投影处理与覆盖和去除
    • WO2006054257A1
    • 2006-05-26
    • PCT/IB2005/053797
    • 2005-11-17
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.KLEIN GUNNEWIEK, Reinier, B., M.WITTEBROOD, RimmertBRASPENNING, Ralph
    • KLEIN GUNNEWIEK, Reinier, B., M.WITTEBROOD, RimmertBRASPENNING, Ralph
    • H04N7/26H04N7/36
    • H04N19/521H04N19/513H04N19/553H04N19/573
    • The method for high efficiency video signal compression comprises: a) calculating a first motion vector field (MvI) at a temporal location (t3) of a third video picture (125) by using pixel data of a second video picture (123) and the third video picture; b) calculating a second motion vector field (Mv2) at a temporal location (t2) of the second video picture (123), in which second motion vector field (M v2) a foreground motion region (rFG2) composed of positions of foreground motion vectors, having a magnitude substantially equal to the motion of a foreground object (101), substantially collocates spatially with positions of pixels of the foreground object (101) and not with pixels of a background object (103, 103'); c) correcting erroneous foreground motion vectors (rERR) in an uncovering region of the first motion vector field (MvI) on the basis of the second motion vector field (Mv2); d) determining in a region (COV) of the first motion vector field corresponding to covering of background object pixels by the foreground object which of two vectors, projecting to a same spatial position in a future picture, is a foreground motion vector (vFG) and which is a background motion vector (vBG); e) projecting motion vectors of the first motion vector field to a temporal location (t4) of a fourth video picture (127) to be predicted, obtaining a third motion vector field (Mv3), comprising allocating a foreground motion vector (vFG) in the case of two vectors projecting to the same spatial position in the third motion vector field (Mv3); and f) predicting the fourth video picture (127) by using the third motion vector field (M v3) for determining positions of pixels to be fetched from at least one previous image (125).
    • 用于高效率视频信号压缩的方法包括:a)通过使用第二视频图像(123)的像素数据在第三视频图像(125)的时间位置(t3)处计算第一运动矢量场(Mv1),并且 第三视频图片; b)在第二视频图像(123)的时间位置(t2)处计算第二运动矢量场(Mv2),其中第二运动矢量场(M v2)由前景运动的位置组成的前景运动区域(rFG2) 具有基本上等于前景物体(101)的运动的幅度的矢量在空间上基本上与前景物体(101)的像素的位置并排,而不是背景物体(103,103')的像素。 c)基于第二运动矢量场(Mv2)来校正第一运动矢量场(Mv1)的露出区域中的错误前景运动矢量(rERR); d)通过前景对象来确定与背景物体像素的覆盖相对应的第一运动矢量场的区域(COV),在向后图像中投射到相同空间位置的两个向量中的哪一个是前景运动矢量(vFG) 并且其是背景运动矢量(vBG); e)将第一运动矢量场的运动矢量投影到要预测的第四视频图像(127)的时间位置(t4),获得第三运动矢量场(Mv3),包括将前景运动矢量(vFG) 在第三运动矢量场(Mv3)中投射到相同空间位置的两个矢量的情况; 以及f)通过使用用于确定从至少一个先前图像(125)获得的像素的位置的第三运动矢量场(M v3)来预测第四视频图像(127)。
    • 10. 发明申请
    • METHOD AND DEVICE FOR TRACKING A MOVEMENT OF AN OBJECT OR OF A PERSON
    • 跟踪对象或人员运动的方法和装置
    • WO2007034434A2
    • 2007-03-29
    • PCT/IB2006/053422
    • 2006-09-21
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHLANFERMANN, GerdBENTEN, Harold, G., P., H.BRASPENNING, Ralph
    • LANFERMANN, GerdBENTEN, Harold, G., P., H.BRASPENNING, Ralph
    • G06T7/2013B60R21/01538G06T7/223G06T2207/10016G06T2207/30268
    • The invention relates to a method, a device and a computer program product for tracking a movement of an object or of a person. Tracking the movement of a person or an object by means of electronic video frames is conventional but fails if the person of object experience a sudden significant change in its translational velocity. The suggested method comprises a first step of grabbing a sequence of digital video frames and thereby capturing the object or person. At the same time measurement values of a parameter are obtained, said measurement values being indicative for the movement of the object or person being tracked by the digital video frames. In the next step the video frames are processed by means of processing logic whereby the processing logic uses a block matching algorithm, said block matching algorithm defining a pixel block in a frame and searching for this pixel block within a search area within a next frame and whereby the location of the search area within the next frame is dynamically adapted on the basis of the measurement values. The invention provides the advantage that an electronic processing of digital video frames by means of a block matching algorithm can be carried out even in those cases in which there are large changes in the velocity of the tracked object or person.
    • 本发明涉及用于跟踪物体或人的移动的方法,装置和计算机程序产品。 通过电子视频帧跟踪人物或物体的移动是常规的,但是如果物体的人的平移速度突然发生显着的变化,就会失败。 所提出的方法包括:抓取数字视频帧序列,从而捕获对象或人物的第一步骤。 同时获得参数的测量值,所述测量值指示由数字视频帧跟踪的对象或人物的移动。 在下一步骤中,通过处理逻辑处理视频帧,由此处理逻辑使用块匹配算法,所述块匹配算法在帧中定义像素块并在下一帧内的搜索区域内搜索该像素块,并且 由此基于测量值动态地调整下一帧内的搜索区域的位置。 本发明提供的优点是,即使在跟踪对象或人的速度有很大变化的情况下,也可以通过块匹配算法进行数字视频帧的电子处理。