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公开(公告)号：US20120230604A1
公开(公告)日：2012-09-13
申请号：US13406842
申请日：2012-02-28
申请人： Hiroaki Yamajo , Koji Aoyama , Tetsuji Inada , Tomonori Tsutsumi , Yosuke Yamamoto , Kazuki Yokoyama
发明人： Hiroaki Yamajo , Koji Aoyama , Tetsuji Inada , Tomonori Tsutsumi , Yosuke Yamamoto , Kazuki Yokoyama
摘要： Disclosed herein is an image processing apparatus, including a noise detection section, a scaling section, an adjustment signal production section, and a correction section. The noise detection section is adapted to detect block noise based on an input image signal in a compression coded form and output noise information indicative of the detected block noise. The scaling section is adapted to carry out a scaling process for carrying out enlargement or reduction of an image indicated by the input image signal for the input image signal and output scaling information indicative of an enlargement ratio or a reduction ratio. The adjustment signal production section is adapted to output an adjustment signal indicative a degree of correction based on the noise information and the scaling information. The correction section is adapted to correct the image signal for which the scaling process is carried out based on the adjustment signal.
摘要翻译： 这里公开了一种图像处理装置，包括噪声检测部分，缩放部分，调整信号产生部分和校正部分。 噪声检测部分适于基于压缩编码形式的输入图像信号来检测块噪声，并输出指示检测到的块噪声的噪声信息。 缩放部分适于执行缩放处理，用于执行用于输入图像信号的输入图像信号所指示的图像的放大或缩小，以及指示放大率或缩小比率的输出缩放信息。 调整信号生成部适于基于噪声信息和缩放信息输出表示校正度的调整信号。 校正部分适于基于调整信号校正执行缩放处理的图像信号。
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公开(公告)号：US20090009665A1
公开(公告)日：2009-01-08
申请号：US12214996
申请日：2008-06-24
申请人： Tomonori Tsutsumi , Shigeru Harada
发明人： Tomonori Tsutsumi , Shigeru Harada
IPC分类号： H04N5/202
摘要： An image processing apparatus according to an embodiment of the present invention includes a correction interval setting unit for setting a correction interval; a correction interval dividing unit for dividing the correction interval into a black side interval and a white side interval; histogram calculating units for calculating a total number of luminance histograms of the black side interval and the white side interval, respectively; gain setting units for setting gains of a γ curve for raising the luminance and a γ curve for lowering the luminance, respectively; gamma curve generating units for generating a gamma curve for raising the luminance and a gamma curve for lowering the luminance, respectively; a gamma curve combining unit for combining the gamma curve for raising the luminance and the gamma curve for lowering the luminance; and a luminance conversion unit for performing the luminance conversion process using the combined gamma curve.
摘要翻译： 根据本发明的实施例的图像处理装置包括：校正间隔设定单元，用于设定校正间隔; 校正间隔分割单元，用于将校正间隔分成黑色侧间隔和白色侧间隔; 用于计算黑色侧面间隔和白色侧面间隔的亮度直方图的总数的直方图计算单元; 用于设置用于提高亮度的伽马曲线的增益的增益设置单元和用于降低亮度的伽马曲线; 用于产生用于提高亮度的伽马曲线的伽马曲线生成单元和用于降低亮度的伽马曲线; 用于组合用于提高亮度的伽马曲线和用于降低亮度的伽马曲线的伽马曲线组合单元; 以及亮度转换单元，用于使用组合的伽马曲线来执行亮度转换处理。
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公开(公告)号：US20070273793A1
公开(公告)日：2007-11-29
申请号：US11746223
申请日：2007-05-09
IPC分类号： H04N5/00
摘要： An image correction circuit capable of easily achieving adaptive color correction on the basis of a luminance correction amount is provided. An image correction circuit includes: a luminance correction means for performing luminance correction on input image data; and a color correction means for performing adaptive color correction on input image data on the basis of the following formula (1): Cout∝Cin×[1+M×(Δ Y/L)] (1) where Cout represents a chrominance signal after color correction, Cin represents a chrominance signal before color correction, M represents an adaptive color correction magnitude which is a fixed positive value, Δ Y represents the total amount of luminance correction by the luminance correction means, L represents a fixed positive value satisfying L
摘要翻译： 提供了能够基于亮度校正量容易地实现自适应色彩校正的图像校正电路。 图像校正电路包括：用于对输入图像数据进行亮度校正的亮度校正装置; 以及根据以下公式（1）对输入图像数据进行自适应颜色校正的颜色校正装置：<？in-line-formula description =“In-line formula”end =“lead”？>CoutαCinx [1 + Mx（ΔY/ L）]（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中Cout表示色彩校正后的色度信号，Cin表示色度 颜色校正前的信号，M表示作为固定正值的自适应色彩校正量，ΔY表示亮度校正装置的亮度校正的总量，L表示满足L <（Ymax / 2）的固定正值，以及 Ymax表示输入图像数据的最大亮度。
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公开(公告)号：US08089560B2
公开(公告)日：2012-01-03
申请号：US12214996
申请日：2008-06-24
申请人： Tomonori Tsutsumi , Shigeru Harada
发明人： Tomonori Tsutsumi , Shigeru Harada
IPC分类号： H04N5/202
摘要： An image processing apparatus according to an embodiment of the present invention includes a correction interval setting unit for setting a correction interval; a correction interval dividing unit for dividing the correction interval into a black side interval and a white side interval; histogram calculating units for calculating a total number of luminance histograms of the black side interval and the white side interval, respectively; gain setting units for setting gains of a γ curve for raising the luminance and a γ curve for lowering the luminance, respectively; gamma curve generating units for generating a gamma curve for raising the luminance and a gamma curve for lowering the luminance, respectively; a gamma curve combining unit for combining the gamma curve for raising the luminance and the gamma curve for lowering the luminance; and a luminance conversion unit for performing the luminance conversion process using the combined gamma curve.
摘要翻译： 根据本发明的实施例的图像处理装置包括：校正间隔设定单元，用于设定校正间隔; 校正间隔分割单元，用于将校正间隔分成黑色侧间隔和白色侧间隔; 用于计算黑色侧面间隔和白色侧面间隔的亮度直方图的总数的直方图计算单元; 用于设定用于提高亮度的γ曲线的增益的增益设定单元和用于降低亮度的γ曲线; 用于产生用于提高亮度的伽马曲线的伽马曲线生成单元和用于降低亮度的伽马曲线; 用于组合用于提高亮度的伽马曲线和用于降低亮度的伽马曲线的伽马曲线组合单元; 以及亮度转换单元，用于使用组合的伽马曲线来执行亮度转换处理。
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公开(公告)号：US07990474B2
公开(公告)日：2011-08-02
申请号：US11746223
申请日：2007-05-09
摘要： An image correction circuit capable of easily achieving adaptive color correction on the basis of a luminance correction amount is provided. An image correction circuit includes: a luminance correction section for performing luminance correction on input image data; and a color correction section for performing adaptive color correction on input image data on the basis of the following formula (1): Cout∝Cin×[1+M×(ΔY/L)] (1) where Cout represents a chrominance signal after color correction, Cin represents a chrominance signal before color correction, M represents an adaptive color correction magnitude which is a fixed positive value, ΔY represents the total amount of luminance correction by the luminance correction section, L represents a fixed positive value satisfying L
摘要翻译： 提供了能够基于亮度校正量容易地实现自适应色彩校正的图像校正电路。 一种图像校正电路包括：用于对输入图像数据执行亮度校正的亮度校正部分; 以及颜色校正部分，用于基于以下公式（1）对输入图像数据进行自适应颜色校正：CoutαCin×[1 + M×（＆Dgr; Y / L）]（1）其中Cout表示色度 颜色校正后的信号，Cin表示色彩校正前的色度信号，M表示作为固定正值的自适应色彩校正量，＆Dgr; Y表示亮度校正部的亮度校正的总量，L表示固定的正值 满足L <（Ymax / 2），Ymax表示输入图像数据的最大亮度。
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