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    • 9. 发明授权
    • Contour correcting circuit and contour correcting method
    • 轮廓校正电路和轮廓校正方法
    • US06909813B2
    • 2005-06-21
    • US10150976
    • 2002-05-21
    • Ryuhei AmanoAkihiro MaenakaTakeshi HachiyaHaruhiko Murata
    • Ryuhei AmanoAkihiro MaenakaTakeshi HachiyaHaruhiko Murata
    • G06F17/17G06T5/00G06T5/20H04N1/409H04N5/208G06K9/40
    • G06T7/12G06T2207/10016G06T2207/20192
    • In a contour correcting circuit that generates, on the basis of respective signals for a plurality of pixels including the pixel to be corrected at the center and arranged in a particular direction, a contour correction signal for the pixel to be corrected, there are provided contour component production means for producing a contour component for the pixel to be corrected depending on the gradient of the change among the respective signals for the plurality of pixels arranged in the particular direction; gain calculation means for calculating, on the basis of the level difference between the signal for the pixel to be corrected and the signal for the pixel adjacent in the particular direction to the pixel to be corrected, such a gain for correction that the larger the level difference is, the smaller the gain becomes; multiplication means for multiplying the contour component produced by the contour component production means by the gain for correction calculated by the gain calculation means; and addition means for adding the results of the multiplication by the multiplication means to the signal for the pixel to be corrected, to generate the contour correction signal for the pixel to be corrected.
    • 在轮廓校正电路中,基于包括要在中心被校正的像素并且沿特定方向布置的多个像素的各个信号,生成要校正像素的轮廓校正信号, 分量生成装置,用于根据排列在特定方向上的多个像素的各个信号之间的变化的梯度来产生要校正的像素的轮廓分量; 增益计算装置,用于根据要校正的像素的信号与在要被校正的像素的特定方向相邻的像素的信号之间的电平差来计算这样的校正增益, 差异在于,增益越小; 乘法装置,用于将由轮廓分量产生装置产生的轮廓分量乘以由增益计算装置计算的校正增益; 以及加法装置,用于将乘法装置的乘法结果与要校正的像素的信号相加,以产生要校正的像素的轮廓校正信号。