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    • 1. 发明授权
    • Luminance/chrominance signal separating device
    • 亮度/色度信号分离装置
    • US5990978A
    • 1999-11-23
    • US822342
    • 1997-03-20
    • Joo Won KimWoo Jin Song
    • Joo Won KimWoo Jin Song
    • H04N9/78
    • H04N9/78
    • A luminance/chrominance (Y/C) signal separating device utilizing motion estimation and compensation. According to the device, the image motion is detected in the unit of a 2.times.2 (sample.times.line) block to separate an NTSC television signal into the Y and C signals. As a result of the motion detection, a three-dimensional Y/C signal separation is performed with respect to a still image, while a three-dimensional Y/C signal separation with the motion estimation and compensation in the unit of the 2.times.2 (sample.times.line) block in a predetermined region of the previous frame is performed with respect to a moving image. A two-dimensional Y/C signal separation is performed with respect to the moving image whose motion is not compensated in the unit of a 2.times.1 (sample.times.line) block in the present frame.
    • 利用运动估计和补偿的亮度/色度(Y / C)信号分离装置。 根据该装置,以2x2(采样线)块为单位检测图像运动,以将NTSC电视信号分离成Y和C信号。 作为运动检测的结果,相对于静止图像执行三维Y / C信号分离,而具有运动估计和补偿的三维Y / C信号分离以2x2(样本线 )块相对于运动图像执行在先前帧的预定区域中。 对于当前帧中的2×1(采样线)块单元中的运动未被补偿的运动图像执行二维Y / C信号分离。
    • 2. 发明授权
    • Apparatus and method for correcting distortion of image
    • 用于校正图像失真的装置和方法
    • US08750641B2
    • 2014-06-10
    • US13249097
    • 2011-09-29
    • Moon Kyu SongHyun Woong ChoByoung Kwang KimWoo Jin Song
    • Moon Kyu SongHyun Woong ChoByoung Kwang KimWoo Jin Song
    • G06K9/40G06K9/36G06K9/20H04N5/76
    • H04N5/217
    • Provided are an apparatus and method for correcting distortion of an image. The method includes finding center point vectors including lens distortion center information about an image and dividing the image into at least two blocks on the basis of the center point vectors, and determining representative directions of the at least two divided blocks and removing outlier vectors not indicating the representative directions from the blocks to estimate a lens distortion center. Accordingly, accurate image correction is enabled by estimating distortion centers of images generated by devices equipped with any lens. Also, image content improving lens distortion correction performance is differentiated from image content degrading the same by picking out image content improving lens distortion center estimation performance, so that a superior image correction effect to other image correction techniques can be obtained.
    • 提供了一种用于校正图像的失真的装置和方法。 该方法包括找到包括关于图像的透镜失真中心信息的中心点矢量,并且基于中心点矢量将图像划分成至少两个块,以及确定至少两个划分的块的代表方向,并且去除不指示 来自块的代表方向来估计镜头变形中心。 因此,通过估计由配备有任何透镜的装置产生的图像的失真中心来实现精确的图像校正。 此外,通过选择提高透镜畸变中心估计性能的图像内容,使得图像内容改善透镜失真校正性能与使其劣化的图像内容不同,从而可以获得对其他图像校正技术的优异的图像校正效果。
    • 5. 发明授权
    • Image distortion correcting apparatus and method thereof
    • 图像失真校正装置及其方法
    • US07142258B2
    • 2006-11-28
    • US10724037
    • 2003-12-01
    • Jong Keun ShinWoo Jin SongKyu Young HwangWoong Seo
    • Jong Keun ShinWoo Jin SongKyu Young HwangWoong Seo
    • H04N3/23
    • H04N9/31H04N5/74H04N9/3185
    • An image distortion correcting apparatus is provided tat is capable of correcting keystone distortion and pincushion distortion in a video display device. The apparatus may include a reference image generating device for generating a reference image and setting a coordinate of the reference image. A displacement measuring device may display the reference image on a screen and measure a coordinate of the displayed image. A distortion information extracting device may extract distortion information on the basis of a coordinate value of the set reference image and a coordinate value of the measured image and generating inverse-distortion information. Still further, a distortion correcting device may generate an inverse-distorted (pre-warping) image of the reference image on the basis of the generated inverse-distortion information.
    • 提供了一种图像失真校正装置,其能够校正视频显示装置中的梯形失真和枕形失真。 该装置可以包括用于生成参考图像并设置参考图像的坐标的参考图像生成装置。 位移测量装置可以在屏幕上显示参考图像并测量显示图像的坐标。 失真信息提取装置可以基于所设置的参考图像的坐标值和测量图像的坐标值并产生反变形信息来提取失真信息。 此外,失真校正装置可以基于所生成的逆失真信息来生成参考图像的逆变形(预翘曲)图像。
    • 6. 发明授权
    • Device and method for correcting color distortion on TV receiver
    • 用于校正电视接收机上色彩失真的装置和方法
    • US06249321B1
    • 2001-06-19
    • US09026977
    • 1998-02-20
    • Kuk Ho BaeWoo Jin Song
    • Kuk Ho BaeWoo Jin Song
    • H04N521
    • H04N9/45H04N5/211
    • Device and method for correcting a color distortion on a TV receiver, is disclosed, the method including a multi-path channel estimation step wherein a transmission channel existing between a transmitted side in a broadcasting station and a color demodulating circuit in a TV receiver is estimated for obtaining an impulse response using a reference signal transmitted from the broadcasting station for equalizing a multi-path channel, a color subcarrier phase error calculation step wherein a phase error of a color subcarrier between the transmitter side of the broadcasting station and the TV receiver is calculated using the estimated impulse response, and a phase correction of a reproduced color subcarrier step wherein a phase error on the TV receiver in reproduction of a color is corrected as much as the phase error obtained in the color subcarrier phase error calculation step.
    • 公开了一种用于校正TV接收机上的色彩失真的装置和方法,所述方法包括多路径信道估计步骤,其中存在广播站中的发送侧和TV接收机中的彩色解调电路之间的传输信道被估计 用于使用从广播站发送的用于均衡多径信道的参考信号获得脉冲响应;彩色副载波相位误差计算步骤,其中广播台的发射机侧与TV接收机之间的彩色副载波的相位误差为 使用估计的脉冲响应进行计算,以及再现彩色副载波步骤的相位校正,其中,在彩色副载波相位误差计算步骤中获得的相位误差校正与TV再现中的TV接收机上的相位误差相同。
    • 7. 发明申请
    • APPARATUS AND METHOD FOR PROCESSING IMAGE
    • 用于处理图像的装置和方法
    • US20120170853A1
    • 2012-07-05
    • US13162740
    • 2011-06-17
    • Woo Jin SongHyun Woong ChoMoon Kyu SongByoung Kwang Kim
    • Woo Jin SongHyun Woong ChoMoon Kyu SongByoung Kwang Kim
    • G06T5/00
    • G06T5/006
    • Provided are an apparatus and method for processing an image. The apparatus includes a detector configured to form one group with pieces of pixel information on an edge of a received image, detect line segments, and generate a plurality of curves using the detected line segments, an optimizer configured to apply a weight to a cost function based on the plurality of generated curves according to distance from the center of the image, define a curve having a shorter length than a threshold value as an outlier and a curve having a greater length than the threshold value as an inlier, remove the outlier, and estimate a distortion level parameter, and a corrector configured to correct a position of a pixel with a correction value using the distortion level parameter. Accordingly, it is possible to correct lens distortion of even an image that has not been directly photographed, and to correct images generated by devices equipped with any lens rather than a specific camera or photographing apparatus.
    • 提供了一种用于处理图像的装置和方法。 该装置包括检测器,其被配置为在接收图像的边缘上形成一组像素信息,检测线段,并且使用检测到的线段生成多条曲线;优化器,被配置为向成本函数 基于根据距离图像中心的距离的多个生成的曲线,将具有比阈值更短的长度的曲线定义为离群值,并且将具有比阈值更大的长度的曲线作为变换器,去除离群值, 并估计失真水平参数,以及校正器,被配置为使用失真水平参数校正具有校正值的像素的位置。 因此,即使是没有直接拍摄的图像,也可以校正透镜失真,并且校正由配备有任何透镜的装置产生的图像,而不是特定的照相机或拍摄装置。
    • 8. 发明授权
    • Maximum likelihood symbol timing estimator
    • 最大似然符号定时估计器
    • US06341147B1
    • 2002-01-22
    • US09414777
    • 1999-10-08
    • Sang Soo OakWoo Jin SongKwang Chun Lee
    • Sang Soo OakWoo Jin SongKwang Chun Lee
    • H03D100
    • H04L7/0062H04L7/0334
    • A maximum likelihood timing recovering unit is disclosed, which includes a sampler for over-sampling a matched filtering signal, first and second delay units for sequentially delaying a sampling signal of the sampler, a first decimeter for outputting a decision sample among an output signal of the first delay unit to a symbol decision unit, an adder for adding an output of the sampler and an output of the second delay unit, a multiplier for multiplying a decision symbol ak received in a preamble format and an output signal of the adder, a second decimeter for outputting a certain interval value based on a decision sample position among the output of the multiplier, an accumulator for accumulating the output of the second decimeter at a certain interval, and a voltage adjusting oscillator for providing an oscillation frequency generated using the output of the accumulator as an adjusting voltage to a 2Fs sampling clock signal of the sampler, for thereby recovering an optimum timing using a data over-sampled by adjusting an oscillation speed of a voltage adjusting oscillator by two times.
    • 公开了一种最大似然定时恢复单元,其包括用于对匹配滤波信号进行过采样的采样器,用于顺序地延迟采样器的采样信号的第一和第二延迟单元,用于输出采样信号的输出信号 第一延迟单元到符号判定单元,用于将采样器的输出和第二延迟单元的输出相加的加法器,用于将以前导格式接收的判定符号ak和加法器的输出信号相乘的乘法器, 第二分米,用于基于乘法器的输出中的判定取样位置输出一定间隔值;累加器,用于以一定间隔累积第二分米的输出;以及电压调节振荡器,用于提供使用该输出产生的振荡频率 作为调制电压的采样器的2Fs采样时钟信号,从而恢复最佳定时 g通过将电压调节振荡器的振荡速度调整两倍来过采样的数据。
    • 10. 发明申请
    • APPARATUS AND METHOD FOR CORRECTING DISTORTION OF IMAGE
    • 用于校正图像失真的装置和方法
    • US20120170865A1
    • 2012-07-05
    • US13249097
    • 2011-11-17
    • Moon Kyu SongHyun Woong ChoByoung Kwang KimWoo Jin Song
    • Moon Kyu SongHyun Woong ChoByoung Kwang KimWoo Jin Song
    • G06K9/40
    • H04N5/217
    • Provided are an apparatus and method for correcting distortion of an image. The method includes finding center point vectors including lens distortion center information about an image and dividing the image into at least two blocks on the basis of the center point vectors, and determining representative directions of the at least two divided blocks and removing outlier vectors not indicating the representative directions from the blocks to estimate a lens distortion center. Accordingly, accurate image correction is enabled by estimating distortion centers of images generated by devices equipped with any lens. Also, image content improving lens distortion correction performance is differentiated from image content degrading the same by picking out image content improving lens distortion center estimation performance, so that a superior image correction effect to other image correction techniques can be obtained.
    • 提供了一种用于校正图像的失真的装置和方法。 该方法包括找到包括关于图像的透镜失真中心信息的中心点矢量,并且基于中心点矢量将图像划分成至少两个块,以及确定至少两个划分的块的代表方向,并且去除不指示 来自块的代表方向来估计镜头变形中心。 因此,通过估计由配备有任何透镜的装置产生的图像的失真中心来实现精确的图像校正。 此外,通过选择提高透镜畸变中心估计性能的图像内容,使得图像内容改善透镜失真校正性能与使其劣化的图像内容不同,从而可以获得对其他图像校正技术的优异的图像校正效果。