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    • 6. 发明申请
    • METHODS OF ADAPTIVE ENCODING AND DECODING VIDEO SIGNALS
    • 自适应编码和解码视频信号的方法
    • US20080175313A1
    • 2008-07-24
    • US11626690
    • 2007-01-24
    • Ian SinclairSteven D. SmithVincent J. FerrerPaul J. Travers
    • Ian SinclairSteven D. SmithVincent J. FerrerPaul J. Travers
    • H04N11/02
    • G09G5/005G09G2310/0224G09G2340/10H04N19/80H04N21/84
    • A method of encoding video signals includes obtaining, averaging, offsetting, and replacing steps. In the obtaining step, a first value comprising a value of a video characteristic for a first portion of a first video signal and a second value comprising a value of the video characteristic for a second portion of a second video signal are obtained. In the averaging step, the first value and the second value are averaged to obtain an average value. In the offsetting step, the average value is offset by a first predetermined offset to obtain a first offset value and the average value is offset by a second predetermined offset to obtain a second offset value. In the replacing step, the first value is replaced with the first offset value on the first signal and the second value is replaced with the second offset value on the second video signal.
    • 编码视频信号的方法包括获得,平均化,偏移和替换步骤。 在获取步骤中,获得包括第一视频信号的第一部分的视频特性值的第一值和包括第二视频信号的第二部分的视频特征值的第二值。 在平均步骤中,对第一值和第二值进行平均以获得平均值。 在偏移步骤中,平均值偏移第一预定偏移量以获得第一偏移值,并且平均值偏移第二预定偏移量以获得第二偏移值。 在替换步骤中,第一个值被替换为第一个信号上的第一个偏移值,第二个值被替换为第二个视频信号的第二个偏移值。
    • 8. 发明授权
    • Head tracking apparatus
    • 头跟踪装置
    • US5373857A
    • 1994-12-20
    • US079466
    • 1993-06-18
    • Paul J. TraversYing S. Yee
    • Paul J. TraversYing S. Yee
    • G01C17/30G06F3/00G06F3/01G09B9/30A61B5/103
    • G06F3/012G01C17/30G09B9/307
    • A low cost head tracker for a virtual reality head set for determining the orientation of the head set relative to the earth's magnetic field includes a magnetic sensor responsive to the earth's magnetic field, and disposed on the head set and arranged with respect to a vertical axis of rotation of the head set to produce a displacement signal relative to the angular displacement of the head set with respect to a calibration orientation relative to the earth's magnetic field, and a signal processor connected to the magnetic sensor, and responsive to the electrical displacement signal for producing an output signal proportional to the orientation of the head set relative to the calibration orientation.
    • 用于确定磁头组相对于地球磁场的取向的虚拟现实头部的低成本磁头跟踪器包括响应于地球磁场的磁传感器,并且设置在磁头组上并相对于垂直轴线布置 头部的旋转以相对于相对于地球磁场的校准定向相对于头组的角位移产生位移信号,以及连接到磁传感器的信号处理器,并且响应于电位移信号 用于产生与头组相对于校准取向的取向成比例的输出信号。