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    • 6. 发明授权
    • Video image processing apparatus for emphasizing color of an image by
enhancing saturation
    • 用于通过增强饱和度来强调图像的颜色的视频图像处理装置
    • US4860091A
    • 1989-08-22
    • US302550
    • 1989-01-26
    • Kenji KimuraKiyoshi Tsuji
    • Kenji KimuraKiyoshi Tsuji
    • H04N9/68H04N9/77
    • H04N9/68H04N9/77
    • A composite video signal is supplied to chrominance and luminance signal separators. A chrominance signal is compared by a phase comparator with an average phase signal, and a difference between them is supplied to a control terminal of a phase modulator. The chrominance signal is input to the phase modulator. The phase averaging circuit, phase comparator, and phase modulator together constitute a hue emphasizing circuit. An output from the hue emphasizing circuit (output from phase modulator) is supplied to a mixer via a gain control amplifier (GCA). The chrominance signal is input to a level detector, where it is envelope-detected. An output from the level detector is supplied to a gain control terminal of the GCA. An output from the GCA emphasizing circuit (output from GCA) is a hue- and saturation-emphasized chrominance signal, and is supplied to the first input terminal of the mixer. A luminance signal is put to a phase shifter via a mixer. A hue-emphasized chrominance signal which is output from the phase comparator is subjected to quadratic differentiation by a differential circuit, and is input as a gain control input to a mixer. The last-mentioned mixer, differential circuit, and phase shifter together constitute an aperture compensator. The shift amount is set in the phase shifter, so as to compensate for a difference between the chrominance and luminance signals generated from the hue emphasizing circuit and the aperture compensator, respectively.
    • 复合视频信号被提供给色度和亮度信号分离器。 色相信号通过相位比较器与平均相位信号进行比较,并且它们之间的差被提供给相位调制器的控制端。 色度信号被输入到相位调制器。 相位平均电路,相位比较器和相位调制器一起构成色调强调电路。 来自色调强调电路(从相位调制器输出)的输出通过增益控制放大器(GCA)提供给混频器。 色度信号被输入到电平检测器,在那里它被包络检测。 来自电平检测器的输出被提供给GCA的增益控制端。 来自GCA强调电路(GCA的输出)的输出是色相和饱和度强调的色度信号,并被提供给混频器的第一输入端。 通过混频器将亮度信号送入移相器。 从相位比较器输出的色相强调色度信号经差分电路进行二次微分,并作为增益控制输入输入混频器。 最后提到的混频器,差分电路和移相器一起构成孔径补偿器。 偏移量设定在移相器中,以分别补偿从色相强调电路和孔径补偿器产生的色度和亮度信号之间的差异。
    • 9. 发明授权
    • Video image processing apparatus for emphasizing color of an image by
expanding hue and saturation
    • 视频图像处理装置,用于通过扩大色相和饱和度来强调图像的颜色
    • US4814859A
    • 1989-03-21
    • US123975
    • 1987-11-20
    • Kenji KimuraKiyoshi Tsuji
    • Kenji KimuraKiyoshi Tsuji
    • H04N9/68H04N9/77H04N9/71H04N9/74
    • H04N9/68H04N9/77
    • A composite video signal is supplied to chrominance and luminance signal separators. A chrominance signal is compared by a phase comparator with an average phase signal, and a difference between them is supplied to a control terminal of a phase modulator. The chrominance signal is input to the phase modulator. The phase averaging circuit, phase comparator, and phase modulator together constitute a hue emphasizing circuit. An output from the hue emphasizing circuit (output from phase modulator) is supplied to a mixer via a gain control amplifier (GCA). The chrominance signal is input to a level detector, where it is envelope-detected. An output from the level detector is supplied to a gain control terminal of the GCA. An output from the GCA emphasizing circuit (output from GCA ) is a hue- and saturation-emphasized chrominance signal, and is supplied to the first input terminal of the mixer. A luminance signal is input to a phase shifter via a mixer. A hue-emphasized chrominance signal which is output from the phase comparator is subjected to quadratic differentiation by a differential circuit, and is input as a gain control input to a mixer. The last mentioned mixer, differential circuit, and phase shifter together constitute an aperature compensator. The shift amount is set in the phase shifter, so as to compensate for a difference between the chrominance and luminance signals generated from the hue emphasizing circuit and the aperture compensator, respectively.
    • 复合视频信号被提供给色度和亮度信号分离器。 色相信号通过相位比较器与平均相位信号进行比较,并且它们之间的差被提供给相位调制器的控制端。 色度信号被输入到相位调制器。 相位平均电路,相位比较器和相位调制器一起构成色调强调电路。 来自色调强调电路(从相位调制器输出)的输出通过增益控制放大器(GCA)提供给混频器。 色度信号被输入到电平检测器,在那里它被包络检测。 来自电平检测器的输出被提供给GCA的增益控制端。 来自GCA强调电路(GCA的输出)的输出是色相和饱和度强调的色度信号,并被提供给混频器的第一输入端。 亮度信号通过混频器输入到移相器。 从相位比较器输出的色相强调色度信号经差分电路进行二次微分,并作为增益控制输入输入混频器。 最后提到的混频器,差分电路和移相器一起构成一个温度补偿器。 偏移量设定在移相器中,以分别补偿从色相强调电路和孔径补偿器产生的色度和亮度信号之间的差异。