公开(公告)号：US20080170617A1

公开(公告)日：2008-07-17

申请号：US11742632

申请日：2007-05-01

Applicant: Seung-hoon Han ,  Dae-hyun Kim ,  Seung-joon Yang ,  Young-ho Lee

Inventor： Seung-hoon Han ,  Dae-hyun Kim ,  Seung-joon Yang ,  Young-ho Lee

IPC: H04B1/66

CPC classification number: H04N19/14 ,  H04N19/56

Abstract: An apparatus for and method of estimating a motion vector for a video image block are provided. The apparatus includes an error calculation unit calculating a motion estimation error for a predetermined prediction motion vector of the image block, an information extraction unit extracting geometric information regarding the image block, an update motion vector generation unit generating an update motion vector based on the motion estimation error calculated by the error calculation unit and the geometric information extracted by the information extraction unit, and an addition unit adding the prediction motion vector to the generated update motion vector.

Abstract translation: 提供了一种用于估计视频图像块的运动矢量的装置和方法。 该装置包括误差计算单元，用于计算图像块的预定预测运动矢量的运动估计误差，提取关于图像块的几何信息的信息提取单元，基于运动生成更新运动矢量的更新运动矢量生成单元 由所述误差计算单元计算的估计误差和由所述信息提取单元提取的几何信息，以及相加单元，将所述预测运动矢量与所生成的更新运动矢量相加。

公开(公告)号：US07324160B2

公开(公告)日：2008-01-29

申请号：US10901383

申请日：2004-07-29

Applicant: Seung-joon Yang

Inventor： Seung-joon Yang

IPC: H04N7/01

CPC classification number: H04N5/21 ,  H04N5/145 ,  H04N7/012

Abstract: A de-interlacing apparatus with a noise reduction/removal device. The noise reduction/removal device can include a motion prediction unit that predicts motion vectors between an image one period ahead of a previous image and a current image with respect to individual images which are sequentially inputted; a motion checking unit that applies the motion vectors predicted by the motion prediction unit to the image one period ahead of the previous image and two different images ahead of the current image in time, and checks whether the motion vectors are precise motion vectors; a motion compensation unit that compensates for motions in use of the motion vectors checked for preciseness thereof by the motion checking unit; and a noise removal unit that removes noise on images using the motion-compensated images by the motion compensation unit and the inputted images. Accordingly, the noise reduction/removal device can reduce or remove noise through simple procedures on noise-bearing images.

Abstract translation: 具有降噪/去除装置的去隔行装置。 噪声降低/去除装置可以包括运动预测单元，其预测相对于顺序地输入的各个图像的先前图像之前一周期的图像与当前图像之间的运动矢量; 运动检查单元，其将由所述运动预测单元预测的运动矢量及其前一图像的前一周期和所述当前图像前方的两个不同图像及时检测，并检查所述运动矢量是否为精确的运动矢量; 运动补偿单元，其通过运动检查单元补偿使用检查运动矢量的精度的运动; 以及噪声消除单元，其通过运动补偿单元和输入图像使用运动补偿图像去除图像上的噪声。 因此，噪声降低/去除装置可以通过简单的噪声承载图像的程序来减少或消除噪声。

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：US07233361B2

公开(公告)日：2007-06-19

申请号：US10438210

申请日：2003-05-15

Applicant: Seung-joon Yang ,  Young-ho Lee

Inventor： Seung-joon Yang ,  Young-ho Lee

IPC: H04N7/01 ,  H04N5/46

CPC classification number: H04N7/0115 ,  H04N7/012

Abstract: An apparatus for detecting whether an image signal is in a film mode, includes a first field buffer, a second field buffer and a third field buffer that sequentially buffer respective fields of the image signal by order of input, using the respective fields stored in the first, the second and the third field buffers. The apparatus for detecting whether an image signal is in the film mode, includes a motion information calculator calculating a motion information of the respective fields by comparing variations of a motion in the respective fields stored in the first and the third field buffers, a motion information buffer storing the motion information in unit of a predetermined number of fields, and a pattern matching unit determining whether the image signal is in the film mode by comparing the motion information of the respective fields stored in the unit of the predetermined number of fields with a pattern of the field having a predetermined periodicity in accordance with a 3:2 pull-down conversion, and by subsequently determining whether the motion information matches the pattern.

Abstract translation: 一种用于检测图像信号是否处于胶片模式的装置，包括第一场缓冲器，第二场缓冲器和第三场缓冲器，其通过输入顺序顺序地缓冲图像信号的各个场， 第一，第二和第三个字段缓冲区。 用于检测图像信号是否处于胶片模式的装置包括运动信息计算器，通过比较存储在第一和第三场缓冲器中的各个场中的运动的变化来运算各场的运动信息，运动信息 以预定数量的字段为单位存储运动信息的缓冲器;以及模式匹配单元，通过将以预定数量的字段为单位存储的各个字段的运动信息与一个字段的运动信息进行比较来确定图像信号是否处于胶片模式 根据3：2下拉转换具有预定周期的场的图案，并且随后确定运动信息是否匹配该图案。

公开(公告)号：US07142724B2

公开(公告)日：2006-11-28

申请号：US10359304

申请日：2003-02-06

Applicant: Jae-hwan Oh ,  Seung-joon Yang

Inventor： Jae-hwan Oh ,  Seung-joon Yang

IPC: G06K9/40

CPC classification number: G06T5/40 ,  G06T5/009 ,  G06T5/50 ,  G06T2207/20216

Abstract: An apparatus and method to enhance a contrast includes a first operation part, a second operation part, and a mapping part. The first operation part calculates an average and a standard deviation of an input image. The second operation part calculates an average and a standard deviation of a target image based on the average and the standard deviation of the input image. The mapping part converts a pixel value of the input image by a mapping function generated by receiving the averages and the standard deviations of the input image and the target image from the first operation part and the second operation part, respectively, and outputs a pixel value of an output image.

公开(公告)号：US20060147090A1

公开(公告)日：2006-07-06

申请号：US11288402

申请日：2005-11-29

Applicant: Seung-joon Yang

Inventor： Seung-joon Yang

IPC: G06K9/00 ,  G06K9/36

CPC classification number: H04N5/145 ,  G06T7/215 ,  G06T7/254

Abstract: A motion adaptive image processing apparatus includes a classifier to classify a current field of a sequence of in put fields into one or more class regions, a calculator to calculate a variance based on pixel values of pixels located in a predetermined region around a certain pixel of the current field, a threshold calculator to calculate a maximum variance and a minimum variance which are pre-set according to the one or more class regions, the threshold calculator calculating a threshold based on the calculated maximum variance and the minimum variance, a motion calculator to calculate a motion change of an image using a previous field and a next field of the current field in the sequence of the input fields, and a weight calculator to calculate the weight to be applied to the certain pixel based on the calculated threshold and the calculated motion change of the image.

Abstract translation: 运动自适应图像处理装置包括：分类器，将输入场序列的当前场分类成一个或多个等级区域;计算器，基于位于某一像素周围的预定区域中的像素的像素值来计算方差; 所述当前场，阈值计算器，用于计算根据所述一个或多个类别区域预先设定的最大方差和最小方差，所述阈值计算器基于所计算的最大方差和最小方差来计算阈值;运动计算器 使用输入字段序列中的当前字段的先前字段和下一个字段来计算图像的运动变化，以及权重计算器，用于基于计算的阈值来计算要应用于该特定像素的权重，并且 计算出图像的运动变化。

公开(公告)号：US07057665B2

公开(公告)日：2006-06-06

申请号：US10624574

申请日：2003-07-23

Applicant: You-young Jung ,  Young-ho Lee ,  Seung-joon Yang

Inventor： You-young Jung ,  Young-ho Lee ,  Seung-joon Yang

IPC: H04N7/01

CPC classification number: H04N9/45 ,  H04N7/0115 ,  H04N7/012

Abstract: A deinterlacing apparatus and method use a buffer unit having a previous field buffer, a current field buffer, and a next field buffer to store, sequentially, individual fields of an image signal; calculate a Sum of Absolute Difference (SAD) value of a predetermined search region unit with reference to a next field stored in the next field buffer and a previous field stored in the previous field buffer; determine whether the predetermined search region is a still region and whether a source of the image signal is a film based on the SAD value; uses a 3D interpolation unit to output adaptively a temporal interpolation value and a spatial interpolation value based on motion information; and adaptively select a deinterlacing result based on the previous field, the next field, and an output of the 3D interpolation unit according to a signal outputted from the still region/film mode detection unit.

Abstract translation: 去隔行扫描装置和方法使用具有先前场缓冲器，当前场缓冲器和下一个场缓冲器的缓冲器单元来顺序地存储图像信号的各个场; 参考存储在下一个字段缓冲器中的下一个字段和存储在前一字段缓冲器中的先前字段，计算预定搜索区域单元的绝对差值（SAD）值; 确定所述预定搜索区域是否是静止区域，以及所述图像信号的源是否是基于所述SAD值的影片; 使用3D内插单元基于运动信息自适应地输出时间内插值和空间内插值; 并且根据从静止区域/胶片模式检测单元输出的信号，基于前一场，下一场和3D插值单元的输出自适应地选择去隔行扫描结果。

公开(公告)号：US20060077289A1

公开(公告)日：2006-04-13

申请号：US11237958

申请日：2005-09-29

Applicant: Young-ho Lee ,  Seung-joon Yang

Inventor： Young-ho Lee ,  Seung-joon Yang

IPC: H04N7/01 ,  H04N5/14

CPC classification number: H04N7/0115 ,  H04N5/145

Abstract: An image conversion device and method of interpolating an input image by utilizing a motion estimation that is adaptive according to characteristics of the input image. The image conversion device includes a detection block to receive three consecutive input fields including a first field, a second field as a target interpolation field, and a third field, to determine which of the first field and the third field has a smaller difference value of field data with respect to the second field that is an interpolation target field, and to determine whether one of the first and third fields have a motion change that is greater than a predetermined threshold with respect to the second field, and an interpolation block to interpolate the second field by determining a selected motion estimation value between the one of the first and third fields having the smaller difference value and the second field, determining a third motion estimation value between the first field and the third field, applying different weights to the selected and third motion estimation values depending on whether one of the first and second fields have the motion change that is greater than the predetermined threshold, and mixing the weighted selected and third motion estimation values.

公开(公告)号：US07020333B2

公开(公告)日：2006-03-28

申请号：US10087831

申请日：2002-03-05

Applicant: Seung-joon Yang ,  Kyng-sun Min

Inventor： Seung-joon Yang ,  Kyng-sun Min

IPC: G06K9/00

CPC classification number: H04N1/4074 ,  G06T5/009 ,  G06T5/40 ,  G06T7/11

Abstract: An apparatus and method are provided to equalize a histogram using a cumulative distribution function (CDF) of an image. A model parameter estimator estimates parameters from the image using a Gaussian model. An error function storing unit stores error function values based on a Gaussian distribution. A CDF calculator calculates a CDF using one of the error function values from the error function storing unit and the estimated parameters. A histogram equalizer performs histogram equalization using the CDF.

公开(公告)号：US07019756B2

公开(公告)日：2006-03-28

申请号：US10724058

申请日：2003-12-01

Applicant: Yung-Jun Park ,  Seung-Joon Yang ,  Jae-Hwan Oh ,  Hyun Kang

Inventor： Yung-Jun Park ,  Seung-Joon Yang ,  Jae-Hwan Oh ,  Hyun Kang

IPC: G09G5/02

CPC classification number: G06T5/009 ,  G06T5/40 ,  G09G2320/0626 ,  H04N1/4074 ,  H04N5/20

Abstract: A brightness control apparatus comprising a probability density function (PDF) calculator to calculate a PDF based on pixel values of respective pixels of an input image signal, a first setter to set an upper limit value and a lower limit value with respect to the pixel values that are equal to or smaller than a predetermined level in the PDF, and a brightness value controller to calculate a cumulative distribution function for the PDF controlled by the upper and lower limit values set by the first setter, and calculating brightness levels corresponding to the input image signal based on the calculated cumulative distribution function. The brightness control apparatus controls the brightness of an image signal so as to prevent it from becoming unnecessarily bright or dark when compensating the brightness of an image signal, while also preventing degradation of contrast.

Abstract translation: 一种亮度控制装置，包括基于输入图像信号的各个像素的像素值计算PDF的概率密度函数（PDF）计算器，相对于像素值设定上限值和下限值的第一设定器 其在PDF中等于或小于预定水平;以及亮度值控制器，用于计算由由第一设定器设置的上限值和下限值控制的PDF的累积分布函数，并且计算与输入相对应的亮度水平 基于计算的累积分布函数的图像信号。 亮度控制装置控制图像信号的亮度，以便在补偿图像信号的亮度的同时防止其变得不必要的亮或暗，同时也防止对比度的降低。