会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Chroma keyer with secondary hue selector
    • 带二次色相选择器的色度键控
    • US5251016A
    • 1993-10-05
    • US880861
    • 1992-05-11
    • James A. Delwiche
    • James A. Delwiche
    • H04N9/75H04N5/275
    • H04N9/75
    • An improved chroma keyer has a secondary hue selector for chrominance suppression of "blue fringing" effects. The second hue selector provides a second chroma key signal from a foreground video signal, with the selected hue being offset from that of a primary hue selector. A matte generator having a hue corresponding to the hue of a backing in the foreground video signal is modulated as a function of the second chroma signal. The modulated hue from the matte generator is subtracted from the foreground video signal to produce a modified foreground video signal. The modified foreground video signal is converted into a shaped foreground video signal. The shaped foreground video signal is combined with a shaped background video signal to produce a composited output video signal. The shaped background video signal is a function of a background video signal and a primary chroma key signal from the primary hue selector.
    • 改进的色度键控器具有用于“蓝色条纹”效果的色度抑制的次级色调选择器。 第二色调选择器提供来自前景视频信号的第二色度键信号,所选择的色调与主色调选择器的色调偏移。 具有与前景视频信号中背景色调相对应的色调的哑光发生器作为第二色度信号被调制。 从前景视频信号中减去来自哑光发生器的调制色调,以产生修改的前景视频信号。 经修改的前景视频信号被转换成成形的前景视频信号。 将成形的前景视频信号与成形背景视频信号组合以产生合成的输出视频信号。 形状的背景视频信号是来自主色调选择器的背景视频信号和主色度键信号的函数。
    • 10. 发明授权
    • Non-additive video mixer
    • 非附加视频混合器
    • US5850267A
    • 1998-12-15
    • US29343
    • 1993-03-10
    • John AbtJames A. Delwiche
    • John AbtJames A. Delwiche
    • H04N5/272H04N5/275H04N9/74H04N9/76H04N5/262
    • H04N5/275H04N5/272H04N9/76
    • To provide an improved non-additive mixer, a first mixer mixes first and second video signals according to a mixer control signal derived in a new way. The first and second video signals are applied, respectively, to first and second chrominance (blocking) filters. The resulting first and second luminance signals are applied, respectively, to first and second summing circuits, where offsets may be applied to either or both of them. The difference is then taken between the first offset luminance signal and the second offset luminance signal to produce a difference luminance signal. The difference luminance signal is then multiplied by a gain control signal to produce the mixer control signal. The mixer control signal can also be used to control a second mixer, thereby providing a channel for keying information that is non-additively mixed according to the luminance content of the video signal that the key information is associated with.
    • 为了提供改进的非加法混合器,第一混频器根据以新的方式导出的混频器控制信号混合第一和第二视频信号。 第一和第二视频信号分别应用于第一和第二色度(阻塞)滤波器。 所得到的第一和第二亮度信号分别被施加到第一和第二求和电路,其中偏移可以被施加到它们中的一个或两者。 然后在第一偏移亮度信号和第二偏移亮度信号之间取差,以产生差分亮度信号。 然后将差分亮度信号乘以增益控制信号以产生混频器控制信号。 混合器控制信号也可用于控制第二混频器,从而根据密钥信息相关联的视频信号的亮度内容提供用于非信息混合信息的信道。