公开(公告)号：US08351734B2

公开(公告)日：2013-01-08

申请号：US13054003

申请日：2009-07-09

申请人： Koji Otsuka ,  Osamu Manba ,  Yasufumi Hagiwara ,  Daisuke Koyama

发明人： Koji Otsuka ,  Osamu Manba ,  Yasufumi Hagiwara ,  Daisuke Koyama

IPC分类号： G06K9/40

CPC分类号： H04N5/208 ,  G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20192 ,  H04N1/4092 ,  H04N5/142

摘要： In an X-Y conversion chart, a threshold Th is defined as Y=0, that is, defined on the X axis, a range from −Th to +Th is defined as a range in which smoothing processing is performed, and a range outside −Th to +Th is defined as a range in which sharpening processing is performed. Among equations denoted by Y1 and Y2 expressed by two linear straight lines, intersections of both the equations Y1 and Y2 are set to the maximum value and the minimum value of an X-Y conversion equation in this case. The threshold is expressed by an intersection of Y2 and the X axis. This algorithm is formed by three factors of: a coefficient α indicating the strength of smoothing; a coefficient β indicating the strength of sharpening; and a threshold Th on the X axis for determining switching between the smoothing processing and the sharpening processing.

摘要翻译： 在XY转换图中，阈值Th被定义为Y = 0，即在X轴上定义，从-Th到+ Th的范围被定义为进行平滑处理的范围， Th至+ Th被定义为执行锐化处理的范围。 在由两条线性直线表示的Y1和Y2表示的方程中，将这两个方程Y1和Y2的交点设定为这种情况下的最大值和X-Y转换方程的最小值。 阈值由Y2和X轴的交点表示。 该算法由以下三个因素形成：系数α表示平滑强度; 系数bgr 表明锐化的强度; 以及用于确定平滑处理和锐化处理之间的切换的X轴上的阈值Th。

公开(公告)号：US20110216967A1

公开(公告)日：2011-09-08

申请号：US13127434

申请日：2009-10-23

申请人： Yasufumi Hagiwara ,  Daisuke Koyama ,  Koji Otsuka ,  Osamu Manba

发明人： Yasufumi Hagiwara ,  Daisuke Koyama ,  Koji Otsuka ,  Osamu Manba

IPC分类号： G06K9/00

CPC分类号： H04N9/643 ,  G06T7/11 ,  G06T2207/10024 ,  G06T2207/30196 ,  H04N1/62 ,  H04N1/628

摘要： A specified color area demarcation circuit 6 has a luminance information (histogram) acquisition unit 3 for multiple pixels and a luminance information (histogram) analysis unit 5 for the multiple pixels. The luminance information (histogram) acquisition unit 3 for the multiple pixels acquires luminance information of the multiple pixels in an input image. In order to acquire the luminance information of the multiple pixels, the luminance information (histogram) acquisition unit 3 creates, for example, a histogram of the luminance indicating frequencies. As an example of the histogram, 0 to 255 gray levels in an image are divided into thirty-two (0-7, 8-15, . . . 240-247, 247-255) ranges, and the number of pixels present in each of the divided gray levels (luminance Y) is counted. In order to extract the feature value of the luminance information of the multiple pixels in the input image, the luminance information analysis unit 5 analyzes, for example, the histogram of the luminance values of the multiple pixels to extract the feature value representing a feature of the histogram. On the basis of the feature value, the luminance information analysis unit 5 obtains the coefficient for demarcating the specified color area. Thereby, it is possible to display an image of the specified color area with high precision.

摘要翻译： 指定的颜色区域分界电路6具有用于多个像素的亮度信息（直方图）获取单元3和用于多个像素的亮度信息（直方图）分析单元5。 用于多个像素的亮度信息（直方图）获取单元3获取输入图像中的多个像素的亮度信息。 为了获取多个像素的亮度信息，亮度信息（直方图）获取单元3创建例如亮度指示频率的直方图。 作为直方图的示例，图像中的0到255个灰度级被划分为32个（0-7,8-15，...，240-247,247-255）范围，并且存在于 对每个分割灰度级（亮度Y）进行计数。 为了提取输入图像中的多个像素的亮度信息的特征值，亮度信息分析单元5例如分析多个像素的亮度值的直方图，以提取表示特征的特征值 直方图。 亮度信息分析部5基于特征量，求出用于划定指定色域的系数。 由此，可以高精度地显示指定颜色区域的图像。

公开(公告)号：US20110115982A1

公开(公告)日：2011-05-19

申请号：US13054003

申请日：2009-07-09

申请人： Koji Otsuka ,  Osamu Manba ,  Yasufumi Hagiwara ,  Daisuke Koyama

发明人： Koji Otsuka ,  Osamu Manba ,  Yasufumi Hagiwara ,  Daisuke Koyama

IPC分类号： H04N5/21

CPC分类号： H04N5/208 ,  G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20192 ,  H04N1/4092 ,  H04N5/142

摘要： In an X-Y conversion chart, a threshold Th is defined as Y=0, that is, the threshold Th is defined on the X axis, a range from −Th to +Th is defined as a range in which smoothing (noise elimination) processing is performed, and a range outside the range from −Th to +Th is defined as a range in which sharpening processing is performed. As shown in equations in drawings, among equations denoted by Y1 and Y2 which are expressed by two linear straight lines, intersections of both the equations Y1 and Y2 are set to the maximum value and the minimum value of an X-Y conversion equation in this case. In addition, the threshold is expressed by an intersection of Y2 and the X axis. This conversion algorithm is formed by only three factors of: a coefficient α indicating the strength of smoothing; a coefficient β indicating the strength of sharpening; and a threshold Th on the X axis for determining switching between the smoothing processing and the sharpening processing. Accordingly, it is possible to reduce the number of parameters for use and to keep the continuity of a smoothing input-output characteristic and a sharpening input-output characteristic even after one of the parameters is adjusted.

摘要翻译： 在XY转换图中，将阈值Th定义为Y = 0，即，在X轴上定义阈值Th，将从-Th到+ Th的范围定义为平滑（噪声消除）处理的范围 并且从-Th到+ Th的范围之外的范围被定义为执行锐化处理的范围。 如图中的等式所示，在由Y1和Y2表示的由两条线性直线表示的方程中，将Y1和Y2两个方程的交点设定为这种情况下的最大值和X-Y转换方程的最小值。 另外，阈值由Y2与X轴的交点表示。 该转换算法仅由以下三个因素形成：表示平滑强度的系数α; 系数bgr 表明锐化的强度; 以及用于确定平滑处理和锐化处理之间的切换的X轴上的阈值Th。 因此，即使在调整了一个参数之后，也可以减少使用的参数的数量，并且保持平滑输入输出特性的连续性和锐化的输入 - 输出特性。

公开(公告)号：US08416257B2

公开(公告)日：2013-04-09

申请号：US12937170

申请日：2009-04-06

申请人： Osamu Mamba ,  Koji Otsuka ,  Yasufumi Hagiwara ,  Daisuke Koyama

发明人： Osamu Mamba ,  Koji Otsuka ,  Yasufumi Hagiwara ,  Daisuke Koyama

IPC分类号： G09G5/02

CPC分类号： H04N1/6027 ,  H04N1/6005 ,  H04N9/73

摘要： Shown is a diagram showing input-output characteristics for color adjustment. The horizontal axis represents an input, and the vertical axis represents an output. In this color adjustment technique, first, so as to prevent degradation the luminance of white after white correction, correction coefficients are determined so that the smallest value thereof may be 1. Note that “1” here is not a strict value. To be more specific, in contrast to the conventional technique in which correction is performed with the largest value being made equal to about “1,” the present embodiments sets the smallest value at about “1.” This idea itself is a first point which makes the embodiments different from the conventional technique. When doing so, all the correction coefficients are “1” or larger. In the case where a correction coefficient is “1” or larger, when the input is large, the output is saturated. To prevent the saturation, the saturation suppressed using an n-degree curve (Xucurve) which is, for example, a quadratic curve or a cubic curve. If doing so, degradation in the maximum luminance due to correction processing can be suppressed while the hue of white is maintained in a practical luminance range (0 to 70%) for video images of a television receiving set (TV), or the like. Thereby, degradation in the maximum luminance due to correction processing can be suppressed while the hue of white is maintained.

摘要翻译： 显示了颜色调整的输入输出特性的图表。 横轴表示输入，纵轴表示输出。 在该颜色调整技术中，首先，为了防止白色校正后的白色亮度的劣化，确定校正系数，使其最小值为1.注意，这里1不是严格的值。 更具体地说，与其中使最大值等于约1进行校正的常规技术相比，本实施例将最小值设置为约1.该思想本身是使实施例不同的第一点 从常规技术。 当这样做时，所有校正系数都是1或更大。 在校正系数为1以上的情况下，输入量大时，输出饱和。 为了防止饱和，使用例如二次曲线或三次曲线的n度曲线（Xucurve）抑制饱和度。 如果这样做，可以抑制由于校正处理引起的最大亮度的劣化，同时白色的色调保持在用于电视接收机（TV）的视频图像的实际亮度范围（0至70％）中等等。 因此，可以抑制由于校正处理引起的最大亮度的劣化，同时维持白色的色调。

公开(公告)号：US20110080524A1

公开(公告)日：2011-04-07

申请号：US12937170

申请日：2009-04-06

申请人： Osamu Mamba ,  Koji Otsuka ,  Yasufumi Hagiwara ,  Daisuke Koyama

发明人： Osamu Mamba ,  Koji Otsuka ,  Yasufumi Hagiwara ,  Daisuke Koyama

IPC分类号： H04N9/73 ,  H04N5/66

CPC分类号： H04N1/6027 ,  H04N1/6005 ,  H04N9/73

摘要： Shown is a diagram showing input-output characteristics for color adjustment. The horizontal axis represents an input, and the vertical axis represents an output. In this color adjustment technique, first, so as to prevent degradation the luminance of white after white correction, correction coefficients are determined so that the smallest value thereof may be 1. Note that “1” here is not a strict value. To be more specific, in contrast to the conventional technique in which correction is performed with the largest value being made equal to about “1,” the present embodiments sets the smallest value at about “1.” This idea itself is a first point which makes the embodiments different from the conventional technique. When doing so, all the correction coefficients are “1” or larger. In the case where a correction coefficient is “1” or larger, when the input is large, the output is saturated. To prevent the saturation, the saturation suppressed using an n-degree curve (Xucurve) which is, for example, a quadratic curve or a cubic curve. If doing so, degradation in the maximum luminance due to correction processing can be suppressed while the hue of white is maintained in a practical luminance range (0 to 70%) for video images of a television receiving set (TV), or the like. Thereby, degradation in the maximum luminance due to correction processing can be suppressed while the hue of white is maintained.

摘要翻译： 显示了颜色调整的输入输出特性的图表。 横轴表示输入，纵轴表示输出。 在该颜色调整技术中，首先，为了防止白色校正后的白色亮度的劣化，确定校正系数，使其最小值为1.注意，这里的“1”不是严格的值。 更具体地说，与其中使最大值等于大约“1”进行校正的常规技术相比，本实施例将最小值设置在大约“1”。这个想法本身是第一点， 使得实施例与传统技术不同。 当这样做时，所有校正系数都为“1”或更大。 在校正系数为“1”或更大的情况下，当输入较大时，输出饱和。 为了防止饱和，使用例如二次曲线或三次曲线的n度曲线（Xucurve）抑制饱和度。 如果这样做，可以抑制由于校正处理引起的最大亮度的劣化，同时白色的色调保持在用于电视接收机（TV）的视频图像的实际亮度范围（0至70％）中等等。 因此，可以抑制由于校正处理引起的最大亮度的劣化，同时维持白色的色调。