公开(公告)号：KR1020130033629A

公开(公告)日：2013-04-04

申请号：KR1020110097391

申请日：2011-09-27

Applicant: 전남대학교산학협력단

Inventor： 김선정 ,  정지훈 ,  홍성훈

IPC: H04N9/64 ,  G06T5/00 ,  H04N1/46

CPC classification number: H04N9/643 ,  H04N9/648 ,  H04N9/73 ,  H04N9/793

Abstract: PURPOSE: A chroma improving device of color images and a method thereof are provided to prevent image distortion generated by chroma overload by improving chroma. CONSTITUTION: A maximum chrominance signal storage unit(121) stores and calculates a maximum chrominance signal value which outputs a maximum chroma value in a range in which a color of a digital color image is not change. A chroma signal control unit(124) improves the chroma of output images by multiplying an input chrominance signal by a gain value. The chrominance signal control unit controls the maximum chrominance signal value in order not to exceed a maximum input chrominance signal value. [Reference numerals] (110) Brightness signal processing unit; (121) Maximum chrominance signal storage unit; (122) Weighted value calculation unit; (124) Chrominance signal control unit;

Abstract translation: 目的：提供彩色图像的色度改善装置及其方法，以通过改善色度来防止由色度过载产生的图像失真。 构成：最大色度信号存储单元（121）存储和计算在数字彩色图像的颜色不改变的范围内输出最大色度值的最大色度信号值。 色度信号控制单元（124）通过将输入色度信号乘以增益值来改善输出图像的色度。 色度信号控制单元控制最大色度信号值以便不超过最大输入色度信号值。 （附图标记）（110）亮度信号处理单元; （121）最大色度信号存储单元; （122）加权值计算单位; （124）色度信号控制单元;

公开(公告)号：KR101262334B1

公开(公告)日：2013-05-08

申请号：KR1020110097391

申请日：2011-09-27

Applicant: 전남대학교산학협력단

Inventor： 김선정 ,  정지훈 ,  홍성훈

IPC: H04N9/64 ,  G06T5/00 ,  H04N1/46

Abstract: 본발명은컬러영상의채도향상장치및 방법에관한것으로, 더욱자세하게는컬러영상의채도를향상시킬때 발생하는과 채도현상(over-saturation)을방지하고, 휘도신호의변화에따른컬러의왜곡이발생하지않게할 수있는컬러영상의채도향상장치및 방법에관한것이다.