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    • 5. 发明申请
    • Method and computer-readable medium for detecting flesh-tone pixels
    • 用于检测肉色像素的方法和计算机可读介质
    • US20070242874A1
    • 2007-10-18
    • US11406072
    • 2006-04-18
    • Ling-Shiou HuangHung-Shih Lin
    • Ling-Shiou HuangHung-Shih Lin
    • G06K9/00
    • G06K9/38G06K9/00664G06K9/4652
    • This invention provides a method and computer-readable medium for detecting flesh-tone regions in pictures, images, and videos. The method includes (a) defining a flesh-tone axis in a color space coordinate system, wherein the flesh-tone axis passes through both the center of a flesh-tone region and the origin of the color space coordinate system; (b) calculating a perpendicular point, wherein the perpendicular point is the point on the flesh-tone axis having the shortest distance to an input pixel; (c) calculating a first distance and a second distance based on the coordinates of the input pixel, the perpendicular point and the center of the flesh-tone region; and (d) determining whether the input pixel is in the flesh-tone region based on the first distance and second distance.
    • 本发明提供一种用于检测图像,图像和视频中的肤色区域的方法和计算机可读介质。 该方法包括:(a)在色空间坐标系中定义一个肤色轴,其中,所述肤色轴通过一个肉色区域的中心和该颜色空间坐标系的原点; (b)计算垂直点,其中所述垂直点是与输入像素具有最短距离的所述肉色轴上的点; (c)基于输入像素的坐标,肉色区域的垂直点和中心来计算第一距离和第二距离; 以及(d)基于所述第一距离和第二距离来确定所述输入像素是否在所述肤色区域中。
    • 7. 发明授权
    • Method and computer-readable medium for detecting flesh-tone pixels
    • 用于检测肉色像素的方法和计算机可读介质
    • US07657087B2
    • 2010-02-02
    • US11406072
    • 2006-04-18
    • Ling-Shiou HuangHung-Shih Lin
    • Ling-Shiou HuangHung-Shih Lin
    • G06K9/34
    • G06K9/38G06K9/00664G06K9/4652
    • This invention provides a method and computer-readable medium for detecting flesh-tone regions in pictures, images, and videos. First, a flesh-tone axis is defined in a color space coordinate system, the flesh-tone axis passing through both the center of a flesh-tone region and the origin of the color space coordinate system. A perpendicular point, is then calculated on the flesh-tone axis as being the point having the shortest distance to an input pixel. A first distance and a second distance are then calculated based on the coordinates of the input pixel, the perpendicular point and the center of the flesh-tone region. The determination as to whether the input pixel is in the flesh-tone region can be made based on the first distance and second distance.
    • 本发明提供一种用于检测图像,图像和视频中的肤色区域的方法和计算机可读介质。 首先,在颜色空间坐标系中定义肉色轴,通过肉色区域的中心和色空间坐标系的原点的肉色轴。 然后在肉色调轴上计算垂直点作为与输入像素具有最短距离的点。 然后基于输入像素的坐标,垂直点和肉色区域的中心来计算第一距离和第二距离。 可以基于第一距离和第二距离来确定输入像素是否在肤色区域中。
    • 8. 发明申请
    • Color correction method and apparatus of RGB signal
    • RGB信号的色彩校正方法和装置
    • US20090103805A1
    • 2009-04-23
    • US11976046
    • 2007-10-19
    • Ling-Shiou Huang
    • Ling-Shiou Huang
    • G06K9/00
    • H04N9/68H04N9/643
    • A color correction method of an RGB signal includes the following steps. First, an original RGB-coordinate point in an RGB color space is defined according to the RGB signal, and a reference plane is obtained according to the original RGB-coordinate point. The original RGB-coordinate point locates on the reference plane, all points on the reference plane have the same value with the original RGB-coordinate point, and the reference lane is orthogonal to a value axis. Next, an intersection point of the value axis and the reference plane is defined as an origin of the reference plane. Afterwards, the hue, saturation and value of the RGB signal are independently and continuously adjusted respectively by rotating the original RGB-coordinate point around the value axis, moving the original RGB-coordinate point towards to or away from the origin and shifting the original RGB-coordinate point along the value axis to obtain a new RGB-coordinate point.
    • RGB信号的颜色校正方法包括以下步骤。 首先,根据RGB信号定义RGB颜色空间中的原始RGB坐标点,并且根据原始RGB坐标点获得参考平面。 原始RGB坐标点位于参考平面上,参考平面上的所有点与原始RGB坐标点具有相同的值,参考通道与值轴正交。 接下来,将值轴和参考平面的交点定义为参考平面的原点。 然后,通过围绕数值轴旋转原始RGB坐标点,分别独立且连续地调整RGB信号的色调,饱和度和值,将原始RGB坐标点向原点移动或移开原始RGB - 坐标点沿值轴,以获得新的RGB坐标点。
    • 9. 发明授权
    • Color correction method and apparatus of RGB signal
    • RGB信号的色彩校正方法和装置
    • US08184903B2
    • 2012-05-22
    • US11976046
    • 2007-10-19
    • Ling-Shiou Huang
    • Ling-Shiou Huang
    • G06K9/00
    • H04N9/68H04N9/643
    • A color correction method of an RGB signal includes the following steps. First, an original RGB-coordinate point in an RGB color space is defined according to the RGB signal, and a reference plane is obtained according to the original RGB-coordinate point. The original RGB-coordinate point locates on the reference plane, all points on the reference plane have the same value with the original RGB-coordinate point, and the reference lane is orthogonal to a value axis. Next, an intersection point of the value axis and the reference plane is defined as an origin of the reference plane. Afterwards, the hue, saturation and value of the RGB signal are independently and continuously adjusted respectively by rotating the original RGB-coordinate point around the value axis, moving the original RGB-coordinate point towards to or away from the origin and shifting the original RGB-coordinate point along the value axis to obtain a new RGB-coordinate point.
    • RGB信号的颜色校正方法包括以下步骤。 首先,根据RGB信号定义RGB颜色空间中的原始RGB坐标点,并且根据原始RGB坐标点获得参考平面。 原始RGB坐标点位于参考平面上,参考平面上的所有点与原始RGB坐标点具有相同的值,参考通道与值轴正交。 接下来,将值轴和参考平面的交点定义为参考平面的原点。 然后,通过围绕数值轴旋转原始RGB坐标点,分别独立且连续地调整RGB信号的色调,饱和度和值,将原始RGB坐标点向原点移动或移开原始RGB - 坐标点沿值轴,以获得新的RGB坐标点。