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    • 13. 发明授权
    • Supporting continuous pan rotation in a pan-tilt camera
    • 在俯仰式摄像机中支持连续盘旋转
    • US08624976B2
    • 2014-01-07
    • US12099019
    • 2008-04-07
    • Johan Nyström
    • Johan Nyström
    • H04N7/18
    • H04N5/232H04N7/185
    • The invention relates to a method for moving a maneuverable part of a pan-tilt camera from a first pan-tilt position, having a first pan coordinate and a first tilt coordinate, to a second pan-tilt position, having a second pan coordinate and a second tilt coordinate. The maneuverable part is moved by inverting the maneuverable part of the camera and panning to the second pan coordinate. The first pan coordinate is part of a pan-tilt coordinate system and the second pan coordinate is part of a complementary pan-tilt coordinate system, which represents positions of the inverted maneuverable part. The maneuverable part is moved from the first tilt coordinate to the second tilt coordinate. The first tilt coordinate is part of the pan-tilt coordinate system and the second tilt coordinate is part of the complementary pan-tilt coordinate system. The invention also relates to a corresponding device and a corresponding computer program.
    • 本发明涉及一种用于将具有第一摇摄坐标和第一倾斜坐标的第一俯仰位置的俯仰摄像机的可操纵部分移动到具有第二摇摄坐标的第二俯仰位置的方法,以及 第二倾斜坐标。 通过将摄像机的机动部分反转并平移到第二摇摄坐标来移动机动部分。 第一摇摄坐标是俯仰坐标系的一部分,第二摇摄坐标是补充俯仰坐标系的一部分,表示反转机动部分的位置。 机动部分从第一倾斜坐标移动到第二倾斜坐标。 第一倾斜坐标是俯仰坐标系的一部分,第二倾斜坐标是补充俯仰坐标系的一部分。 本发明还涉及相应的设备和相应的计算机程序。
    • 19. 发明授权
    • Distance and distortion estimation method and apparatus in channel optimized vector quantization
    • 通道优化矢量量化中的距离和失真估计方法及装置
    • US06321193B1
    • 2001-11-20
    • US09238386
    • 1999-01-27
    • Johan NyströmTomas SvenssonRoar HagenTor Björn Minde
    • Johan NyströmTomas SvenssonRoar HagenTor Björn Minde
    • G10L1100
    • H03M7/3082
    • A channel optimized vector quantization apparatus includes a device for weighting a sample vector x by a weighting matrix A and a device for weighting a set of code book vectors ĉr by a weighting matrix B. Device form a set of distance measures {dw(Ax,Bĉr)} representing the distance between the weighted sample vector Ax and each weighted code book vector Bĉr. Other device form a set of distortion measures {&agr;i(x)} by multiplying each distance measure by a channel transition probability Pr|i that an index r has been received at a decoder when an index i has been sent from an encoder and adding together these multiplied distance measures for each possible index r. Finally device determine an index imin corresponding to the smallest distortion measure &agr;i(x) and represents the sample vector by this index imin.
    • 信道优化矢量量化装置包括用于通过加权矩阵A对采样矢量x进行加权的装置,以及用于通过加权矩阵B对一组码本向量ĉr进行加权的装置。装置形成一组距离度量{dw(Ax, Bĉr)}表示加权采样矢量Ax与每个加权码本向量Bĉr之间的距离。 其他设备通过将每个距离测量乘以信道转换概率Pr | i来形成一组失真度量{alphai(x)},当索引i已经从编码器发送并且相加在一起时,在解码器处已经接收到索引r 对于每个可能的索引r,这些相乘的距离度量。 最后,设备确定对应于最小失真度量α(x)的索引值,并通过该索引imin表示样本向量。