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    • 1. 发明授权
    • Contour-emphasizing circuit
    • 轮廓强调电路
    • US07302112B2
    • 2007-11-27
    • US10297814
    • 2002-04-11
    • Shingo ShimazakiTaku Kihara
    • Shingo ShimazakiTaku Kihara
    • G06K9/40G06K9/48G06K15/00G06T5/00H04N1/407H04N1/409H04N5/21
    • H04N5/208
    • An edge enhancement circuit uses bandpass filters to separate an original video signal into low-, middle- and high-frequency band edge components which will be supplied to waveform shaping circuits. Each of the waveform shaping circuits detects an amplitude peak level of the edge component, generates a gain coefficient based on the peak level, and multiplies the original video signal by the gain coefficient. The results of multiplication are added together to generate a final detail signal. Thus, the edge enhancement circuit amplifies the amplitude of the edge component having a frequency approximate to the spatial frequency of the video signal to provide an edge enhancement based on a frequency characteristic corresponding to the spatial frequency of the video signal.
    • 边缘增强电路使用带通滤波器将原始视频信号分离成将被提供给波形整形电路的低,中,高频带边缘分量。 每个波形整形电路检测边缘分量的振幅峰值电平,根据峰值电平产生增益系数,并将原始视频信号乘以增益系数。 相乘的结果被加在一起以产生最终的细节信号。 因此,边缘增强电路放大具有近似于视频信号的空间频率的频率的边缘分量的幅度,以基于与视频信号的空间频率相对应的频率特性来提供边缘增强。
    • 4. 发明授权
    • Contour-emphasizing device
    • 轮廓强调装置
    • US07298404B2
    • 2007-11-20
    • US10474715
    • 2002-04-11
    • Shingo Shimazaki
    • Shingo Shimazaki
    • H04N9/64H04N9/68H04N5/228G06K9/40
    • H04N5/208H04N5/33H04N9/646H04N2209/048
    • The present invention provides an edge enhancing apparatus (20) including a filter (51) to extract a horizontal high-frequency component of a video signal, a rise/fall detection detector (52) to detect leading and trailing edges of the horizontal high-frequency component of the video signal, and a waveform balancer (53) to multiply the high frequency component extracted by the filter (51) by a gain to generate an enhancement signal for enhancing the original video signal. The waveform balancer (53) works to make the gain a value larger than “1” when the signal level of the high frequency component at the leading edge of the video signal is positive while making the gain a value of “1” or smaller than “1” when the signal level of the high frequency component at the leading edge of the video signal is negative, and make the gain a value of “1” or smaller than “1” when the signal level of the high frequency component at the trailing edge of the video signal is positive while making the gain a value larger than “1” when the signal level of the high frequency component at the trailing edge of the video signal is negative.
    • 本发明提供一种包括提取视频信号的水平高频分量的滤波器(51)的边缘增强装置(20),用于检测水平高频分量的前后边缘的上升/下降检测检测器(52) 视频信号的频率分量和波形平衡器(53),以将由滤波器(51)提取的高频分量乘以增益,以产生用于增强原始视频信号的增强信号。 当视频信号前沿的高频分量的信号电平为正时,波形平​​衡器(53)的作用是使增益大于“1”,同时使增益为“1”或小于 当视频信号前沿的高频分量的信号电平为负时,“1”,当增益为“1”或小于“1”时,增益为“1” 当视频信号后沿的高频分量的信号电平为负时,视频信号的后沿为正,同时使增益大于“1”。
    • 5. 发明授权
    • Apparatus and method for emphasizing an outline of a video signal
    • 用于强调视频信号的轮廓的装置和方法
    • US6043853A
    • 2000-03-28
    • US838316
    • 1997-04-08
    • Shingo ShimazakiTakashi AsaidaTakashi KameyamaYoshiaki Satou
    • Shingo ShimazakiTakashi AsaidaTakashi KameyamaYoshiaki Satou
    • H04N5/208H04N9/68
    • H04N5/208
    • Video camera which emphasizes an outline of a video signal produced thereby. A detail signal of a video image represented by the video signal is generated and which represents a vertical outline emphasis signal. Edges of the video image and burst-like portions of the video signal are detected, and an edge detection signal is generated that corresponds in one manner to the detected edges and that corresponds in another manner to the detected burst portions. The detail signal is adjusted by the edge detection signal or by a cross color suppression signal generated from the vertical outline emphasis signal. The video signal then is modified by the adjusted detail signal so as to produce the outline emphasized video signal. The detail signal may also be adjusted by a gain setting signal that corresponds to the vertical outline emphasis signal and which is compressed in level when the vertical outline emphasis signal is relatively low.
    • 视频摄像机,其强调由此产生的视频信号的轮廓。 产生由视频信号表示的视频图像的细节信号,其表示垂直轮廓加重信号。 检测视频信号的视频图像和脉冲串部分的边缘,并且生成与检测到的边缘相对应的边缘检测信号,并且以与检测到的突发部分相对应的边缘检测信号。 细节信号由边缘检测信号或由垂直轮廓强调信号产生的交叉色抑制信号进行调整。 然后,通过调整的细节信号修改视频信号,以产生轮廓强调的视频信号。 细节信号也可以通过对应于垂直轮廓加重信号的增益设置信号来调节,并且当垂直轮廓加重信号相对较低时被加压。