公开(公告)号：US08218896B2

公开(公告)日：2012-07-10

申请号：US12293899

申请日：2006-10-02

Applicant: Bo-gun Park ,  Mi-yeon Lee ,  Seung-joon Yang

Inventor： Bo-gun Park ,  Mi-yeon Lee ,  Seung-joon Yang

IPC: G06K9/40

CPC classification number: H04N9/646 ,  H04N19/117 ,  H04N19/139 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/48 ,  H04N19/61 ,  H04N19/80 ,  H04N19/85

Abstract: An image display apparatus and a color distortion compensation method are provided. The image display apparatus includes a detecting part which detects whether there is a color distortion in a block, using decoding information acquired from an incoming image and a pixel value of the incoming image, and a compensation part which compensates for the color distortion of the block when it is determined that the color distortion exists. Accordingly, it is possible to detect a color distortion in the block using the decoding information and pixel value acquired from the incoming image, and compensate for the color distortion of the block by performing pixel value adjustment and low pass filtering (LPF) when it is determined that the color distortion exists.

Abstract translation: 提供了图像显示装置和颜色失真补偿方法。 图像显示装置包括检测部分，使用从输入图像获取的解码信息和输入图像的像素值来检测块中是否存在颜色失真;以及补偿部，其补偿块的颜色失真 当确定存在颜色失真时。 因此，可以使用从输入图像获取的解码信息和像素值来检测块中的颜色失真，并且通过执行像素值调整和低通滤波（LPF）来补偿块的颜色失真 确定存在颜色失真。

公开(公告)号：US07443448B2

公开(公告)日：2008-10-28

申请号：US10964712

申请日：2004-10-15

Applicant: Seung-joon Yang ,  Young-jin Kwon

Inventor： Seung-joon Yang ,  Young-jin Kwon

IPC: H04N5/21 ,  H04N7/01

CPC classification number: H04N5/21 ,  H04N7/0112 ,  H04N7/012

Abstract: An apparatus to suppress artifacts in an image signal. The apparatus includes a differential value calculation unit to calculate a differential value between adjacent pixels with respect to an input image signal, a diffusion amount calculation unit to calculate an amount of diffusion between the adjacent pixels on the basis of the differential value calculated by the differential value calculation unit, and a pixel value conversion unit to convert the present pixel value of the image signal inputted on the basis of the diffusion amount between the pixels calculated by the diffusion amount calculation unit. The apparatus changes the pixel value in consideration of the differential value between the adjacent pixels, and thus it can provide a high quality image signal without losing or misrecognizing the artifacts of the image signal.

Abstract translation: 一种抑制图像信号中伪像的装置。 该装置包括差分值计算单元，用于计算相对于输入图像信号的相邻像素之间的差分值，扩散量计算单元，基于由差分计算出的微分值来计算相邻像素之间的扩散量 值计算单元和像素值转换单元，用于转换基于由扩散量计算单元计算的像素之间的扩散量输入的图像信号的当前像素值。 该装置考虑到相邻像素之间的差分值来改变像素值，因此它可以提供高质量的图像信号，而不会丢失或错误地识别图像信号的伪影。

公开(公告)号：US07359573B2

公开(公告)日：2008-04-15

申请号：US10699658

申请日：2003-11-04

Applicant: Yung-jun Park ,  Jae-hwan Oh ,  Hyun Kang ,  Seung-joon Yang

Inventor： Yung-jun Park ,  Jae-hwan Oh ,  Hyun Kang ,  Seung-joon Yang

IPC: G06K9/40 ,  G06K9/00 ,  G09G5/00

CPC classification number: G06T5/009 ,  G06T5/40

Abstract: A contrast compensation apparatus and a method thereof utilize a simplified hardware structure and a low contrast distortion. The contrast compensation apparatus includes a pixel value detection unit to detect a distribution of pixel values of respective pixels of an input image signal, a pixel value limit unit having pre-set luminance limit values and re-configuring the distribution of the pixel values of the respective pixels based on the pre-set luminance limit values, and a mapping unit to set luminance for the respective pixels based on a cumulative distribution function with respect to the re-configured pixel values. When certain portions of an image are rendered very bright or dark, the phenomenon in which the entire image becomes abruptly bright or dark is reduced. Further, the contrast compensation apparatus uses the minimum number of multipliers, adders, and subtractors only, thus having an advantage of simplified structure and using less electric power.

Abstract translation: 对比度补偿装置及其方法利用简化的硬件结构和低对比度失真。 对比度补偿装置包括：像素值检测单元，用于检测输入图像信号的各个像素的像素值的分布，具有预设亮度极限值的像素值限制单元，以及重新配置像素值的像素值的分布; 基于预设亮度极限值的各个像素，以及基于相对于重新配置的像素值的累积分布函数来设置各个像素的亮度的映射单元。 当图像的某些部分变得非常亮或暗时，整个图像变得突然亮或暗的现象减少。 此外，对比度补偿装置仅使用最小数量的乘法器，加法器和减法器，因此具有简化结构和使用较少电功率的优点。

公开(公告)号：US07212246B2

公开(公告)日：2007-05-01

申请号：US10714605

申请日：2003-11-18

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: H04N7/012 ,  H04N7/0112

Abstract: An image signal format detection apparatus and method. The image signal format detection apparatus includes a first summed absolute difference (SAD) value calculation unit for calculating, from a previous field, a current field, and a next field of a time-consecutive image signal, a first SAD value with reference to pixel values of the current field and the previous field. A second SAD value calculation unit calculates a second SAD value with reference to pixel values of the current field and the next field. A pattern generation unit generates a detection pattern based on a result of a comparison of the first and second SAD values,; and a pattern analysis unit stores the detection pattern by field, compares the stored detection pattern of a series of fields with a predetermined verification pattern, and determines whether the image signal is an image signal produced in 2:2 pull-down. The apparatus detects an image signal produced in 2:2 pull-down by using the SAD values between fields, and can be applied to a deinterlacing device or the like.

Abstract translation: 一种图像信号格式检测装置及方法。 图像信号格式检测装置包括：第一相加绝对差值（SAD）值计算单元，用于从先前场计算时间连续图像信号的当前场和下一场，参考像素的第一SAD值 当前字段和前一个字段的值。 第二SAD值计算单元参照当前场和下一场的像素值来计算第二SAD值。 图案生成单元基于第一SAD值和第二SAD值的比较结果生成检测图案; 图案分析单元逐场存储检测图案，将存储的一系列场的检测图案与预定的验证图案进行比较，并且确定图像信号是否是以2：2下拉产生的图像信号。 该装置通过使用场之间的SAD值来检测在2：2下拉中产生的图像信号，并且可以应用于去隔行扫描装置等。

公开(公告)号：US07042512B2

公开(公告)日：2006-05-09

申请号：US10074259

申请日：2002-02-14

Applicant: Seung-joon Yang ,  Sung-hee Lee

Inventor： Seung-joon Yang ,  Sung-hee Lee

IPC: H04N7/01

CPC classification number: H04N7/012 ,  H04N5/145

Abstract: An apparatus for and a method of adaptive motion compensated de-interlacing of video data, in which one of a spatio-temporal method and a motion compensation method is adaptively selected according to a motion type. Motion vectors of a video field to be interpolated and an accuracy of the motion vectors are estimated using adjacent fields. An existence or non-existence of global motion is determined by analyzing the estimated motion vectors. Pixels generated according to a spatio-temporal interpolation method or pixels generated according to a motion compensated interpolation method are selected based on the accuracy of the estimated motion vectors and the existence or non-existence of global motion.

公开(公告)号：US20060044476A1

公开(公告)日：2006-03-02

申请号：US11210823

申请日：2005-08-25

Applicant: Young-ho Lee ,  Seung-joon Yang

Inventor： Young-ho Lee ,  Seung-joon Yang

IPC: H04N7/01

CPC classification number: H04N7/0115

Abstract: A film mode detection apparatus and a method thereof can determine whether an input image is a film image by detecting existence/nonexistence of a caption in an input image field and using information of the remaining area of a field except for a caption area. The apparatus includes a caption detection unit to detect minimum values of difference values of information between successive fields from a field area including a caption area and a remaining field area excluding the caption area in an input image, respectively, and to judge whether a caption exists in a present field according to variances of the detected minimum values, a pattern generation unit to generate a pattern of a certain area of the field using the difference values of the information between the successive fields according to whether the caption exists, and a decision unit to determine whether the input image is a film image using the generated pattern. Accordingly, deterioration of picture quality due to frequency on/off operation of a film mode caused by an error of film mode judgment can be prevented.

Abstract translation: 电影模式检测装置及其方法可以通过检测输入图像字段中的字幕的存在/不存在以及使用除字幕区域之外的场的剩余区域的信息来确定输入图像是否为胶片图像。 该装置包括：字幕检测单元，用于分别检测来自包括字幕区域和除输入图像中的字幕区域之外的剩余字段区域的连续字段之间的信息的差值的最小值，并判断是否存在字幕 根据检测到的最小值的方差在当前场中，使用根据是否存在字幕的连续字段之间的信息的差值来生成场的某个区域的模式的模式生成单元和判定单元 以确定输入图像是否是使用所生成的图案的胶片图像。 因此，可以防止由于胶片模式判断的误差引起的胶片模式的频率开/关操作导致的图像质量的劣化。

公开(公告)号：US20050111055A1

公开(公告)日：2005-05-26

申请号：US10986291

申请日：2004-11-12

Applicant: Seung-joon Yang ,  Young-jin Kwon

Inventor： Seung-joon Yang ,  Young-jin Kwon

IPC: G06T5/00 ,  G06T5/20 ,  H04N5/208 ,  H04N1/40 ,  G06K15/00

CPC classification number: H04N5/208 ,  G06T5/003 ,  G06T5/20 ,  G06T2207/20012 ,  G06T2207/20192

Abstract: An apparatus and method of image sharpness enhancement. The apparatus includes a slope value calculator to set in an input video signal a window of a predetermined size with reference to a current pixel, and to calculate a slope value based on pixel values within the window, a gain calculator to calculate a gain corresponding to the magnitude of the slope value, a differential value calculator to calculate a differential value which is a difference between pixel values of the current pixel and other pixels within the window, a diffusivity calculator to calculate the diffusivity between the pixels corresponding to the magnitude of the differential value, a diffusivity summer to assign a predetermined weight to the diffusivities between the pixels and to calculate the sum of the diffusivities; and a pixel value converter to multiply the sum of the diffusivities by the gain and to add the multiplied result to the current pixel value. Accordingly, by adaptively applying the weighted diffusivity to the video signal, the image sharpness enhancement is achieved while the visibly objectionable image and the signal distortion are prevented.

Abstract translation: 图像锐度增强的装置和方法。 该装置包括：斜率值计算器，用于参考当前像素将输入视频信号设置为预定尺寸的窗口，并且基于窗口内的像素值计算斜率值;增益计算器，用于计算对应于 斜率值的大小，用于计算作为当前像素的像素值与窗口内的其他像素之间的差的差分值的差分值计算器，用于计算与所述窗口的幅度对应的像素之间的扩散率的扩散计算器 差分值，扩散度夏季，以对像素之间的扩散率分配预定的权重，并计算扩散率的总和; 以及像素值转换器，用于将扩散的和乘以增益，并将乘法结果与当前像素值相加。 因此，通过将视频信号的加权扩散度自适应地应用，在可见的令人反感的图像和信号失真被防止的同时实现图像清晰度增强。

公开(公告)号：US07593059B2

公开(公告)日：2009-09-22

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

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.

Abstract translation: 一种通过利用根据输入图像的特性自适应的运动估计来内插输入图像的图像转换装置和方法。 图像转换装置包括检测块，用于接收包括第一场，第二场作为目标内插场的第三场和第三场的三个连续输入场，以确定第一场和第三场中的哪一个具有较小的差值 相对于作为插值目标字段的第二字段的字段数据，以及确定第一和第三字段中的一个是否具有相对于第二字段大于预定阈值的运动变化，以及插值块 通过确定具有较小差值和第二场的第一和第三场中的一个之间的所选运动估计值，确定第一场和第三场之间的第三运动估计值，对所选择的运动估计值应用不同的权重， 以及第三运动估计值，其取决于第一和第二场中的一个是否具有较大的运动变化 并且混合加权的选择和第三运动估计值。

公开(公告)号：US20090034859A1

公开(公告)日：2009-02-05

申请号：US12293899

申请日：2006-10-02

Applicant: Bo-gun PARK ,  Mi-yeon LEE ,  Seung-joon YANG

Inventor： Bo-gun PARK ,  Mi-yeon LEE ,  Seung-joon YANG

IPC: G06K9/36

CPC classification number: H04N9/646 ,  H04N19/117 ,  H04N19/139 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/48 ,  H04N19/61 ,  H04N19/80 ,  H04N19/85

Abstract: An image display apparatus and a color distortion compensation method are provided. The image display apparatus includes a detecting part which detects whether there is a color distortion in a block, using decoding information acquired from an incoming image and a pixel value of the incoming image, and a compensation part which compensates for the color distortion of the block when it is determined that the color distortion exists. Accordingly, it is possible to detect a color distortion in the block using the decoding information and pixel value acquired from the incoming image, and compensate for the color distortion of the block by performing pixel value adjustment and low pass filtering (LPF) when it is determined that the color distortion exists.

Abstract translation: 提供了图像显示装置和颜色失真补偿方法。 图像显示装置包括检测部分，使用从输入图像获取的解码信息和输入图像的像素值来检测块中是否存在颜色失真;以及补偿部，其补偿块的颜色失真 当确定存在颜色失真时。 因此，可以使用从输入图像获取的解码信息和像素值来检测块中的颜色失真，并且通过执行像素值调整和低通滤波（LPF）来补偿块的颜色失真 确定存在颜色失真。

公开(公告)号：US20080181306A1

公开(公告)日：2008-07-31

申请号：US11830026

申请日：2007-07-30

Applicant: Dae-hyun KIM ,  Seung-hoon HAN ,  Seung-joon YANG ,  Anna LEE

Inventor： Dae-hyun KIM ,  Seung-hoon HAN ,  Seung-joon YANG ,  Anna LEE

IPC: H04B1/66

CPC classification number: H04N19/52 ,  H04N19/61

Abstract: A method and an apparatus for motion vector estimation using motion vectors of neighboring image blocks are provided. The method includes dividing a current image block into a plurality of sub-blocks; and estimating motion vectors of the sub-blocks using the motion vectors and pixel weights of the neighboring image blocks adjacent to the sub-blocks.

Abstract translation: 提供了使用相邻图像块的运动矢量进行运动矢量估计的方法和装置。 该方法包括将当前图像块划分成多个子块; 以及使用与子块相邻的相邻图像块的运动矢量和像素权重来估计子块的运动矢量。