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1. 发明授权

US06909813B2 Contour correcting circuit and contour correcting method 有权
标题翻译：轮廓校正电路和轮廓校正方法
公开(公告)号：US06909813B2
公开(公告)日：2005-06-21
申请号：US10150976
申请日：2002-05-21
申请人： Ryuhei Amano , Akihiro Maenaka , Takeshi Hachiya , Haruhiko Murata
发明人： Ryuhei Amano , Akihiro Maenaka , Takeshi Hachiya , Haruhiko Murata
IPC分类号： G06F17/17 , G06T5/00 , G06T5/20 , H04N1/409 , H04N5/208 , G06K9/40
CPC分类号： G06T7/12 , G06T2207/10016 , G06T2207/20192
摘要： 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.
摘要翻译：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。

2. 发明授权

US06873372B2 Clipping circuit and image processing device employing such a clipping circuit 失效
标题翻译：剪切电路和采用这种限幅电路的图像处理装置
公开(公告)号：US06873372B2
公开(公告)日：2005-03-29
申请号：US09905199
申请日：2001-07-16
申请人： Takeshi Hachiya , Akihiro Maenaka
发明人： Takeshi Hachiya , Akihiro Maenaka
IPC分类号： H04N5/208 , G06T5/00 , G06K9/00
CPC分类号： G06T5/004 , G06T2207/20192
摘要： In an image processing device, an edge detecting circuit 1 produces edge signals that represent edge components present in image signals, and an adder circuit 2 superimposes the edge signals on the image signals to produce edge-enhanced image signals. The image signals before edge enhancement are fed to a range setting circuit 3 so that, based on the image signals preceding and following a target image signal that is about to be processed by a clipper 4, a range in which the data value of the target image signal is allowed to vary is set. Based on the range of data values thus set by the range setting circuit 3, the clipper 4 clips the data values of the edge-enhanced image data.
摘要翻译：在图像处理装置中，边缘检测电路1产生表示图像信号中存在的边缘成分的边缘信号，并且加法器电路2将边缘信号叠加在图像信号上以产生边缘增强图像信号。边缘增强之前的图像信号被馈送到范围设置电路3，使得基于要由削波器4处理的目标图像信号之前和之后的图像信号，其中目标的数据值图像信号被允许变化设置。基于由范围设定电路3设定的数据值的范围，裁剪器4剪辑边缘增强图像数据的数据值。

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