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    • 2. 发明专利
    • 画像処理装置、画像処理方法
    • 图像处理设备,图像处理方法
    • JP2015041813A
    • 2015-03-02
    • JP2013170756
    • 2013-08-20
    • 合志 清一Seiichi Goshi清一 合志株式会社計測技術研究所Keisoku Giken Co Ltd
    • GOSHI SEIICHIOGASAWARA HITOSHINAKAMURA SHINICHIRO
    • H04N5/208H04N7/01
    • H04N7/0122G06T5/003G06T5/20H04N5/21H04N7/0117H04N7/0135H04N7/015
    • 【課題】入力画像をアップコンバートして画像の画素数を増大させるとともに、入力画像を表す入力画像信号に含まれる周波数成分より高い周波数成分を生成して入力画像を鮮鋭化する際に、乗算器の個数を減らし、大幅な機器の小型化とコストの削減を実現する。【解決手段】入力画像信号をアップコンバートする基本画像側の経路と、入力画像信号について非線形演算処理を行う鮮鋭化処理側の経路とを有し、前記鮮鋭化処理側の経路において、少なくとも一つのフィルタの後段にアップコンバータを設け、その後に前記非線形演算処理を行う。なお、前記少なくとも一つのフィルタは、ノイズ除去用の2次元低域通過フィルタであっても、入力信号の周波数成分の少なくとも直流成分を除去する高域通過フィルタであってもよい。【選択図】図6
    • 要解决的问题:为了通过减少乘数来实现装置的尺寸和成本的大大降低,当通过对输入图像进行上变换来增加图像的元素数量,并且通过产生较高频率分量来锐化输入图像 比包含在表示输入图像的输入图像信号中的频率分量。图像处理装置具有在基本图像侧上的路径,用于对输入图像信号进行上变频,并且在锐化侧具有用于执行非线性的路径 输入图像信号的算术处理。 在锐化侧的路径中,在至少一个滤波器的后续阶段提供上变频器,然后执行非线性运算处理。 至少一个滤波器可以是用于噪声消除的二维低通滤波器,或用于去除输入信号的至少DC分量的高通滤波器。
    • 3. 发明专利
    • Image enhancement device, image enhancement method
    • 图像增强设备,图像增强方法
    • JP2014036380A
    • 2014-02-24
    • JP2012177466
    • 2012-08-09
    • Seiichi Goshi清一 合志Keisoku Giken Co Ltd株式会社計測技術研究所
    • GOSHI SEIICHI
    • H04N5/20G06T5/20H04N1/409
    • G06T5/003G06T2207/20192H04N1/4092H04N5/142H04N5/208
    • PROBLEM TO BE SOLVED: To sharpen an image by frequency components exceeding Nyquist frequency.SOLUTION: An image enhancement device 1 generating an output image by sharpening an input image comprises a filter 10 for generating a first signal by removing at least the DC component of the frequency components included in an input image signal representing the input image; a nonlinear processing unit 20 for generating a second signal by performing nonlinear processing of the first signal becoming asymmetrical for positive and negative of the first signal; a limiter 30 for generating a third signal by adjusting the second signal; and an adder 50 for generating an output image signal representing the output image by adding the third signal to the input image signal.
    • 要解决的问题:通过超过奈奎斯特频率的频率分量锐化图像。解决方案:通过锐化输入图像产生输出图像的图像增强装置1包括滤波器10,用于通过至少去除第一信号的DC分量来产生第一信号 包括在表示输入图像的输入图像信号中的频率分量; 非线性处理单元20,用于通过对第一信号的正和负变为不对称的第一信号进行非线性处理来产生第二信号; 限制器30,用于通过调节第二信号产生第三信号; 以及加法器50,用于通过将第三信号与输入图像信号相加来产生表示输出图像的输出图像信号。
    • 4. 发明专利
    • Image processing apparatus and image processing method
    • 图像处理装置和图像处理方法
    • JP2014165679A
    • 2014-09-08
    • JP2013035186
    • 2013-02-25
    • Seiichi Goshi清一 合志Keisoku Giken Co Ltd株式会社計測技術研究所
    • GOSHI SEIICHIOGASAWARA HITOSHINAKAMURA SHINICHIRO
    • H04N5/208
    • H04N5/208G06T5/003G06T5/20H04N1/4092
    • PROBLEM TO BE SOLVED: To sharpen an image without generating a frequency component caused by doubling sharpening processes in horizontal and vertical directions in a frequency domain exceeding horizontal and vertical frequency components of an input image.SOLUTION: An image processing apparatus comprises: a vertical filter for removing a high frequency portion of a frequency component in a vertical direction of an input image signal; a horizontal sharpening process section for generating a harmonic wave in a horizontal direction including a frequency component higher than a frequency component in a horizontal direction included in the input image signal; a horizontal filter for removing a high frequency portion of a frequency component in a horizontal direction of the input image signal; and a vertical sharpening process section for generating a harmonic wave in a vertical direction including a frequency component higher than the frequency component in the vertical direction included in the input image signal. A horizontal direction processing part disposing the vertical filter on a prestage of the horizontal sharpening process section and a vertical direction processing part disposing the horizontal filter on a prestage of the vertical sharpening process section are connected in series or in parallel and sharpen an input image.
    • 要解决的问题:锐化图像而不产生在超过输入图像的水平和垂直频率分量的频域中在水平和垂直方向上的倍频锐化处理引起的频率分量。解决方案:图像处理装置包括:垂直滤波器 用于去除输入图像信号的垂直方向上的频率分量的高频部分; 水平锐化处理部分,用于在水平方向上产生包括高于包括在输入图像信号中的水平方向的频率分量的频率分量的谐波; 用于去除输入图像信号的水平方向上的频率分量的高频部分的水平滤波器; 以及垂直锐化处理部分,用于在垂直方向上产生包括高于包括在输入图像信号中的垂直方向上的频率分量的频率分量的谐波。 将垂直滤波器设置在水平锐化处理部分的预置位上的水平方向处理部分和将垂直方向处理部分设置在垂直锐化处理部分的前级处的垂直方向处理部分被串联或并联并且锐化输入图像。
    • 5. 发明专利
    • Image enhancement device, and image enhancement method
    • 图像增强设备和图像增强方法
    • JP2014036383A
    • 2014-02-24
    • JP2012177476
    • 2012-08-09
    • Seiichi Goshi清一 合志Keisoku Giken Co Ltd株式会社計測技術研究所
    • GOSHI SEIICHI
    • H04N5/208G06T5/20H04N1/409
    • G06T5/00G06T5/003G06T5/20G06T2207/20192H04N1/4092H04N5/208
    • PROBLEM TO BE SOLVED: To sharpen an image by the frequency components exceeding the Nyquist frequency, without performing repeated operation for a plurality of frames.SOLUTION: An image enhancement device 1 for generating an output image by sharpening an input image comprises: a nonlinear processing unit 10 for generating a first signal by performing nonlinear processing of an input image signal representing the input image; a filter 20 for generating a second signal by removing at least the DC component of the frequency components included in the first signal; a limiter 30 for generating a third signal by adjusting the second signal; and an adder 40 for generating an output image signal representing the output image by adding the third signal to the input image signal.
    • 要解决的问题:通过超过奈奎斯特频率的频率分量锐化图像,而不对多个帧进行重复操作。解决方案:用于通过锐化输入图像来生成输出图像的图像增强装置1包括:非线性处理 单元10,用于通过对表示输入图像的输入图像信号进行非线性处理来产生第一信号; 滤波器20,用于通过去除包括在第一信号中的频率分量的至少DC分量来产生第二信号; 限制器30,用于通过调节第二信号产生第三信号; 以及加法器40,用于通过将第三信号与输入图像信号相加来产生表示输出图像的输出图像信号。
    • 6. 发明授权
    • Image enhancing device, image enhancing method, image enhancing program and signal processing device
    • 图像增强装置,图像增强方法,图像增强程序和信号处理装置
    • US08508667B2
    • 2013-08-13
    • US13138197
    • 2009-10-14
    • Seiichi Goshi
    • Seiichi Goshi
    • H04N5/21
    • H04N5/142G06T5/003G06T5/10H04N1/4092
    • In at least one embodiment of the present invention, quality of image is improved by sufficiently sharpening the image through an appropriate high-frequency compensation with a simple arrangement, not only for still images but also for moving images and even if the images have already undergone image enlarging processes. In at least one embodiment, an HPF extracts high-frequency components from an input image signal. A square operator generates a squared signal by squaring the first signal. A first differentiator generates a first differentiation signal by differentiating the squared signal. The second differentiator generates a second differentiation signal by differentiating the input image signal. A multiplier generates a second signal by multiplying the first differentiation signal by the second differentiation signal. An adder generates an output image signal by adding the second signal to the input image signal, as a compensation signal.
    • 在本发明的至少一个实施例中,通过以简单的布置充分地通过适当的高频补偿来锐化图像来提高图像质量,不仅对静止图像而且对于运动图像,甚至图像已经经历了 图像放大过程。 在至少一个实施例中,HPF从输入图像信号中提取高频分量。 平方运算符通过平方第一信号产生平方信号。 第一微分器通过区分平方信号产生第一微分信号。 第二微分器通过区分输入图像信号产生第二微分信号。 乘法器通过将第一微分信号乘以第二微分信号来产生第二信号。 加法器通过将第二信号与输入图像信号相加来产生输出图像信号作为补偿信号。
    • 8. 发明申请
    • IMAGE ENHANCING DEVICE, IMAGE ENHANCING METHOD, IMAGE ENHANCING PROGRAM AND SIGNAL PROCESSING DEVICE
    • 图像增强装置,图像增强方法,图像增强程序和信号处理装置
    • US20110279730A1
    • 2011-11-17
    • US13138197
    • 2009-10-14
    • Seiichi Goshi
    • Seiichi Goshi
    • H04N5/21
    • H04N5/142G06T5/003G06T5/10H04N1/4092
    • In at least one embodiment of the present invention, quality of image is improved by sufficiently sharpening the image through an appropriate high-frequency compensation with a simple arrangement, not only for still images but also for moving images and even if the images have already undergone image enlarging processes. In at least one embodiment, an HPF extracts high-frequency components from an input image signal. A square operator generates a squared signal by squaring the first signal. A first differentiator generates a first differentiation signal by differentiating the squared signal. The second differentiator generates a second differentiation signal by differentiating the input image signal. A multiplier generates a second signal by multiplying the first differentiation signal by the second differentiation signal. An adder generates an output image signal by adding the second signal to the input image signal, as a compensation signal.
    • 在本发明的至少一个实施例中,通过以简单的布置充分地通过适当的高频补偿来锐化图像来提高图像质量,不仅对静止图像而且对于运动图像,甚至图像已经经历了 图像放大过程。 在至少一个实施例中,HPF从输入图像信号中提取高频分量。 平方运算符通过平方第一信号产生平方信号。 第一微分器通过区分平方信号产生第一微分信号。 第二微分器通过区分输入图像信号产生第二微分信号。 乘法器通过将第一微分信号乘以第二微分信号来产生第二信号。 加法器通过将第二信号与输入图像信号相加来产生输出图像信号作为补偿信号。