公开(公告)号：US20070286287A1

公开(公告)日：2007-12-13

申请号：US11761219

申请日：2007-06-11

Applicant: Sung-hee KIM ,  Seung-Joon Yang ,  Rae-hong Park ,  Ji-won Lee ,  Hyun-seung Lee ,  Jun-young Kim ,  Bo-ra Lim

Inventor： Sung-hee KIM ,  Seung-Joon Yang ,  Rae-hong Park ,  Ji-won Lee ,  Hyun-seung Lee ,  Jun-young Kim ,  Bo-ra Lim

IPC: H04N11/02

CPC classification number: H04N19/186 ,  H04N19/51 ,  H04N19/80 ,  H04N19/86

Abstract: A method of improving picture quality in a composite video burst signal includes dividing the composite video burst signal into a plurality of frequency bands using a low pass filter and a high pass filter, performing wavelet packet filtering of frequency bands including a chrominance signal having energy higher than a specified threshold among the plurality of frequency bands, and performing Wiener filtering of frequency bands including a chrominance signal having energy lower than a specified threshold.

Abstract translation: 一种提高复合视频脉冲串信号中的图像质量的方法包括：使用低通滤波器和高通滤波器将复合视频脉冲串信号分成多个频带，对包括能量较高的色度信号的频带进行小波包滤波 并且对包括具有低于指定阈值的能量的色度信号的频带进行维纳滤波。

公开(公告)号：US07986854B2

公开(公告)日：2011-07-26

申请号：US11761219

申请日：2007-06-11

Applicant: Sung-hee Kim ,  Seung-Joon Yang ,  Rae-hong Park ,  Ji-won Lee ,  Hyun-seung Lee ,  Jun-young Kim ,  Bo-ra Lim

Inventor： Sung-hee Kim ,  Seung-Joon Yang ,  Rae-hong Park ,  Ji-won Lee ,  Hyun-seung Lee ,  Jun-young Kim ,  Bo-ra Lim

IPC: G06K9/40

CPC classification number: H04N19/186 ,  H04N19/51 ,  H04N19/80 ,  H04N19/86

Abstract: A method of improving picture quality in a composite video burst signal includes dividing the composite video burst signal into a plurality of frequency bands using a low pass filter and a high pass filter, performing wavelet packet filtering of frequency bands including a chrominance signal having energy higher than a specified threshold among the plurality of frequency bands, and performing Wiener filtering of frequency bands including a chrominance signal having energy lower than a specified threshold.

Abstract translation: 一种提高复合视频脉冲串信号中的图像质量的方法包括：使用低通滤波器和高通滤波器将复合视频脉冲串信号分成多个频带，对包括能量较高的色度信号的频带进行小波包滤波 并且对包括具有低于指定阈值的能量的色度信号的频带进行维纳滤波。

公开(公告)号：US08131109B2

公开(公告)日：2012-03-06

申请号：US11760852

申请日：2007-06-11

Applicant: Sung-hee Kim ,  Seung-joon Yang ,  Rae-hong Park ,  Bo-ra Lim

Inventor： Sung-hee Kim ,  Seung-joon Yang ,  Rae-hong Park ,  Bo-ra Lim

IPC: G06K9/36

CPC classification number: G06T5/50 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/20021

Abstract: Provided are an image processing method and apparatus for enhancing contrast. The image processing apparatus includes a determination unit that determines whether contrast enhancement processing should be performed on an input image; an intensity mapping unit that generates a plurality of images having different exposure times from the input image, using intensity mapping, if the contrast enhancement processing should be performed on the input image; and an image composition unit that composes the plurality of images into a composed image. Therefore, it is possible to reduce a color change or a false contour phenomenon that are generated in a related art contrast enhancement process.

Abstract translation: 提供了一种用于增强对比度的图像处理方法和装置。 图像处理装置包括确定单元，其确定是否应当对输入图像执行对比度增强处理; 强度映射单元，如果对输入图像执行对比度增强处理，则使用强度映射来生成具有与输入图像不同的曝光时间的多个图像; 以及将多个图像组成合成图像的图像合成单元。 因此，可以减少在相关技术的对比度增强处理中产生的颜色变化或假轮廓现象。