公开(公告)号：US08014598B2

公开(公告)日：2011-09-06

申请号：US11766562

申请日：2007-06-21

申请人： Hwa-Hyun Cho ,  Bom-Yun Kim ,  Jong-Seon Kim

发明人： Hwa-Hyun Cho ,  Bom-Yun Kim ,  Jong-Seon Kim

IPC分类号： G06K9/00

CPC分类号： H04N9/646

摘要： A method of changing a pixel color includes determining whether a chrominance of a pixel is in a preference chrominance area, where the preference chrominance area is defined as a conic section in a two-dimensional chrominance plane and an eccentricity of the conic section is not greater than 1, and changing the chrominance of the pixel to a preference chrominance to generate a preference pixel when the chrominance of the pixel is in the preference chrominance area. Therefore, the method may set a preference chrominance area in a simple manner, and hardware for setting the preference chrominance area may be easily implemented.

摘要翻译： 改变像素颜色的方法包括确定像素的色度是否在优选色度区域中，其中偏好色度区域被定义为二维色度平面中的圆锥截面，并且圆锥截面的偏心度不大 并且当像素的色度处于偏好色度区域时，将像素的色度改变为偏好色度以产生偏好像素。 因此，该方法可以以简单的方式设置偏好色度区域，并且可以容易地实现用于设置偏好色度区域的硬件。

公开(公告)号：US20080018801A1

公开(公告)日：2008-01-24

申请号：US11766562

申请日：2007-06-21

申请人： Hwa-Hyun Cho ,  Bom-Yun Kim ,  Jong-Seon Kim

发明人： Hwa-Hyun Cho ,  Bom-Yun Kim ,  Jong-Seon Kim

IPC分类号： H04N9/64

CPC分类号： H04N9/646

摘要： A method of changing a pixel color includes determining whether a chrominance of a pixel is in a preference chrominance area, where the preference chrominance area is defined as a conic section in a two-dimensional chrominance plane and an eccentricity of the conic section is not greater than 1, and changing the chrominance of the pixel to a preference chrominance to generate a preference pixel when the chrominance of the pixel is in the to preference chrominance area. Therefore, the method may set a preference chrominance area in a simple manner, and hardware for setting the preference chrominance area may be easily implemented.

摘要翻译： 改变像素颜色的方法包括确定像素的色度是否在优选色度区域中，其中偏好色度区域被定义为二维色度平面中的圆锥截面，并且圆锥截面的偏心度不大 并且当像素的色度处于偏好色度区域时，将像素的色度改变为偏好色度以产生偏好像素。 因此，该方法可以以简单的方式设置偏好色度区域，并且可以容易地实现用于设置偏好色度区域的硬件。

公开(公告)号：US08045064B2

公开(公告)日：2011-10-25

申请号：US11782712

申请日：2007-07-25

申请人： Hwa-Hyun Cho ,  Jong-Seon Kim ,  Bom-Yun Kim

发明人： Hwa-Hyun Cho ,  Jong-Seon Kim ,  Bom-Yun Kim

IPC分类号： H04N5/57

CPC分类号： G09G5/00 ,  G06T5/009 ,  G09G2320/066 ,  G09G2360/16 ,  G09G2360/18 ,  H04N5/20

摘要： A contrast control apparatus includes a memory for storing input image signals within one frame and an image reducing unit for selecting at least one image signal of the input image signals. An accumulation value calculating unit calculates accumulation values for predetermined sampling gray values with respect to the selected image signal. An image characteristic decision unit determines at least one characteristic of the selected image based on the accumulation values. A contrast control function calculating unit calculates a contrast control function based on the characteristic of the selected image. A contrast controller controls contrast of the image signals stored in the memory according to the contrast control function.

摘要翻译： 对比度控制装置包括用于存储一帧内的输入图像信号的存储器和用于选择输入图像信号的至少一个图像信号的图像减少单元。 累加值计算单元针对所选择的图像信号计算用于预定采样灰度值的累积值。 图像特征确定单元基于累积值确定所选择的图像的至少一个特性。 对比度控制功能计算单元基于所选图像的特性来计算对比度控制功能。 对比度控制器根据对比度控制功能控制存储在存储器中的图像信号的对比度。