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111. 发明授权

US07554611B2 Method and apparatus of bidirectional temporal noise reduction 失效
标题翻译：双向时间噪声降低的方法和装置
公开(公告)号：US07554611B2
公开(公告)日：2009-06-30
申请号：US11110336
申请日：2005-04-19
申请人： Zhi Zhou , Yeong-Taeg Kim
发明人： Zhi Zhou , Yeong-Taeg Kim
IPC分类号： H04N5/21 , H04N1/409
CPC分类号： H04N5/21 , G06T5/002 , G06T5/20 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , G06T2207/20192 , H04N5/144 , H04N19/80
摘要： A method of bidirectional temporal noise reduction in a video signal processing system is provided. A video signal comprising a video sequence of frames is received. Backward temporal noise reduction is performed on the sequence of frames to obtain backward noise-reduced frames. Then, forward temporal noise reduction is performed on the backward noise-reduced frames, to reduce noise in the video sequence of frames.
摘要翻译：提供了一种视频信号处理系统中双向时间噪声降低的方法。接收包括帧的视频序列的视频信号。对帧序列执行向后时间噪声降低以获得反向降噪帧。然后，对反向降噪帧执行前向时间噪声降低，以减少帧的视频序列中的噪声。

112. 发明授权

US07551795B2 Method and system for quantization artifact removal using super precision 有权
标题翻译：使用超精度进行量化伪像去除的方法和系统
公开(公告)号：US07551795B2
公开(公告)日：2009-06-23
申请号：US11264973
申请日：2005-11-01
申请人： Ning Xu , Yeong-Taeg Kim
发明人： Ning Xu , Yeong-Taeg Kim
IPC分类号： G06K9/40
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/17 , H04N19/176 , H04N19/182
摘要： An image processing method and system removes quantization artifacts in digital video/images. The local neighborhood of the current pixel is segmented based on a pre-defined quantization level to generate a segment containing the current pixel. Then, the luminance values of the pixels within the segment are low-pass filtered. Several sub-gains are computed based on measurements of the segment, and the sub-gains are multiplied together and filtered to obtain a final gain value. The final gain value is used to linearly interpolate between the original luminance value and the filtered luminance value of the pixel to obtain an output luminance value.
摘要翻译：图像处理方法和系统消除数字视频/图像中的量化伪像。基于预定义的量化级别对当前像素的局部邻域进行分段，以生成包含当前像素的段。然后，片段内的像素的亮度值被低通滤波。基于段的测量来计算几个子增益，并将子增益相乘并过滤以获得最终增益值。最终增益值用于在原始亮度值和滤波后的像素亮度值之间线性插值，以获得输出亮度值。

113. 发明授权

US07542095B2 Method and system of noise-adaptive motion detection in an interlaced video sequence 失效
标题翻译：隔行视频序列中噪声自适应运动检测的方法和系统
公开(公告)号：US07542095B2
公开(公告)日：2009-06-02
申请号：US11040578
申请日：2005-01-20
申请人： Zhi Zhou , Yeong-Taeg Kim
发明人： Zhi Zhou , Yeong-Taeg Kim
IPC分类号： H04N5/00 , H04N7/01 , H04N9/64 , H04N11/20
CPC分类号： H04N5/144 , H04N7/012 , H04N7/0137
摘要： A motion decision value provides a dependable estimate whether motion occurs in a given region of a video image in an interlaced video sequence. The motion detection is particularly applicable in the conversion from interlaced video to progressive video. An input first is fed to an absolute value former which computes a frame difference signal from a difference between the first field and the second field in one frame. A point-wise motion detection signal is computed based on the frame difference signal and noise in the video sequence, wherein the point-wise motion detection signal is noise-adaptive. The point-wise motion detection signal is then followed by a region-wise motion detection that combines the point-wise motion detection signal with an adjacent point-wise motion detection signal delayed by one field. The motion decision value is then computed from the region-wise motion detection signal and output for further processing in the video signal processing system, such as for choosing whether the spatially interpolated video signal value or the temporally interpolated video signal value should be used for the output.
摘要翻译：运动判定值提供在隔行视频序列中视频图像的给定区域中是否发生运动的可靠估计。运动检测特别适用于从隔行视频到逐行视频的转换。一个输入首先被馈送到绝对值前者，该绝对值前者从一帧中的第一场和第二场之间的差计算帧差信号。基于视频序列中的帧差信号和噪声来计算逐点运动检测信号，其中，逐点运动检测信号是噪声自适应的。点运动检测信号之后是区域运动检测，其将逐点运动检测信号与延迟一场的相邻逐点运动检测信号组合。然后，从区域运动检测信号中计算运动判定值，并输出以用于视频信号处理系统中的进一步处理，例如用于选择空间插值视频信号值还是时间插值视频信号值应用于输出。

114. 发明授权

US07508997B2 Method and apparatus for video image interpolation with edge sharpening 有权
标题翻译：用于边缘锐化的视频图像插值方法和装置
公开(公告)号：US07508997B2
公开(公告)日：2009-03-24
申请号：US10840493
申请日：2004-05-06
申请人： Xianglin Wang , Yeong-Taeg Kim
发明人： Xianglin Wang , Yeong-Taeg Kim
IPC分类号： G06K9/32
CPC分类号： G06T3/403 , G06T5/003 , G06T5/20 , G06T2207/10016 , G06T2207/20192 , H04N5/208 , H04N7/0135 , H04N7/0142
摘要： A method and apparatus for video sample interpolation with edge sharpening, whereby edge sharpness can be essentially preserved and/or enhanced in the interpolated image. Image interpolation for an original two dimensional image is conducted along the horizontal and vertical directions separately using a 1D digital filter. In interpolating a new sample in the image, the digital filter is first used to obtain a temporary interpolation value for the new sample. Then, an appropriate amount of edge enhancement is calculated for the new sample location. The enhancement value is combined with the temporary interpolation value to result in a final interpolation value for the new sample.
摘要翻译：一种用于边缘锐化的视频样本插值的方法和装置，由此在内插图像中可以基本上保留和/或增强边缘锐度。使用1D数字滤波器，分别沿水平和垂直方向进行原始二维图像的图像插值。在图像内插新样本时，首先使用数字滤波器获得新样本的临时内插值。然后，为新的样本位置计算适当量的边缘增强。增强值与临时内插值组合以得到新样本的最终内插值。

115. 发明申请

US20080317128A1 SYSTEM AND METHOD FOR BOUNDARY MOTION VECTOR CORRECTION IN MOTION COMPENSATED FRAME RATE 失效
标题翻译：用于运动补偿帧速率的边界运动矢量校正的系统和方法
公开(公告)号：US20080317128A1
公开(公告)日：2008-12-25
申请号：US11767365
申请日：2007-06-22
申请人： Zhi Zhou , Yeong-Taeg Kim
发明人： Zhi Zhou , Yeong-Taeg Kim
IPC分类号： H04B1/66
CPC分类号： H04N5/145 , H04N7/0127 , H04N7/014 , H04N19/176 , H04N19/40 , H04N19/44 , H04N19/521 , H04N19/55 , H04N19/553 , H04N19/61
摘要： A system and method for more efficiently determining motion vectors of uncovering areas adjacent the edge of frames when the frame image is moving in the direction of the frame boundary. Backwards motion estimation is used to determine a block of video data which is, in one implementation, the block of video data adjacent the frame edge having a reliable motion vector known from the first frame. Once the block is identified, the blocks of video data in the uncovering area between the identified block and the frame boundary can then be assigned the motion vector data of the identified block.
摘要翻译：一种用于当帧图像沿着帧边界的方向移动时，用于更有效地确定与帧边缘相邻的露出区域的运动矢量的系统和方法。向后运动估计用于确定视频数据块，在一个实现中，与帧边缘相邻的视频数据块具有从第一帧已知的可靠的运动矢量。一旦识别出块，则识别的块和帧边界之间的揭露区域中的视频数据块可以被分配给所识别的块的运动矢量数据。

116. 发明申请

US20080316356A1 DETECTION OF PROGRESSIVE PULLDOWN IN A VIDEO SEQUENCE 失效
标题翻译：在视频序列中检测渐进式拉杆
公开(公告)号：US20080316356A1
公开(公告)日：2008-12-25
申请号：US11766705
申请日：2007-06-21
申请人： Zhi Zhou , Yeong-Taeg Kim
发明人： Zhi Zhou , Yeong-Taeg Kim
IPC分类号： H04N9/07
CPC分类号： H04N7/0115
摘要： System and methods for the detection of progressive pulldown in a video sequence are provided. The method comprises calculating a difference between temporally adjacent frames in the video sequence, generating a pattern based upon these differences, and comparing the generated pattern against patterns understood for known progressive film modes in order to determine if the video sequence comprises a known progressive film mode. In one embodiment, the pattern may be adjusted to account for uncertainty in assigning values to the pattern, reducing the likelihood of false detections. In another advantage, confidence metrics are built into the method in order to further reduce the incidence of false detections.
摘要翻译：提供了用于检测视频序列中的渐进下拉的系统和方法。该方法包括计算视频序列中的时间上相邻的帧之间的差异，基于这些差异产生模式，并将生成的模式与已知渐进式电影模式理解的模式进行比较，以便确定视频序列是否包括已知的逐行影片模式。在一个实施例中，可以调整图案以考虑为图案赋值的不确定性，从而降低错误检测的可能性。另一个优点是，为了进一步减少错误检测的发生率，在该方法中内置了置信度量度。

117. 发明申请

US20080247664A1 SYSTEM AND METHOD FOR AN ADAPTIVE DE-BLOCKING FILTER AFTER DECODING OF COMPRESSED DIGITAL VIDEO 有权
标题翻译：压缩数字视频解码后的自适应防堵滤波器的系统和方法
公开(公告)号：US20080247664A1
公开(公告)日：2008-10-09
申请号：US11696667
申请日：2007-04-04
申请人： Sangkeun Lee , Yeong-Taeg Kim
发明人： Sangkeun Lee , Yeong-Taeg Kim
IPC分类号： G06K9/40
CPC分类号： H04N19/117 , H04N19/154 , H04N19/86
摘要： A system and method that adjusts the strength of a de-blocking filter to remove block artifacts in compressed video is disclosed. Block artifacts are associated with the block-based image/video compression techniques. The block artifacts deteriorate the quality of compressed image and video, especially at low bit rates. A de-blocking method estimates the strength of the block artifacts at each block boundary either directly from the MPEG decoder or from a measurement process or both, and adjusts the de-blocking parameters accordingly. An additional block content analysis improves the performance of the overall de-blocking process.
摘要翻译：公开了一种调整解块滤波器的强度以去除压缩视频中的块伪影的系统和方法。块伪影与基于块的图像/视频压缩技术相关联。块伪像恶化了压缩图像和视频的质量，特别是在低比特率下。解块方法直接从MPEG解码器或测量过程或两者估计每个块边界处的块伪影的强度，并相应地调整去阻塞参数。额外的块内容分析改进了整体解块过程的性能。

118. 发明授权

US07433536B2 Method for enhancing a digital image while suppressing undershoots and overshoots 有权
标题翻译：用于在抑制下冲和过冲的同时增强数字图像的方法
公开(公告)号：US07433536B2
公开(公告)日：2008-10-07
申请号：US11520287
申请日：2006-09-12
申请人： Yeong-Taeg Kim
发明人： Yeong-Taeg Kim
IPC分类号： G06K9/40
CPC分类号： H04N1/4092 , G06T5/004 , G06T5/20
摘要： A method is provided for enhancing the details of an image while suppressing or preventing shoots that would otherwise occur during a prior art enhancement process. The enhancing method is based on recognizing that Shoots are likely to occur at edges of an image to be enhanced, and therefore, if the enhancement is sufficiently reduced or even possibly eliminated at the edges of the image, the Shoots that would otherwise occur will be suppressed or even possibly eliminated. A gain suppressing function is used to attenuate the enhancement at the edges of the image. Preferably, the gain suppressing function inherently identifies the edges of the image to be enhanced.
摘要翻译：提供了一种用于增强图像细节的方法，同时抑制或防止在现有技术增强过程中否则会发生的芽。该增强方法基于识别出可能在要增强的图像的边缘处发生拍摄，因此，如果在图像的边缘处增强被充分降低甚至可能消除，则否则将发生的拍摄将是抑制甚至可能消除。增益抑制功能用于衰减图像边缘的增强。优选地，增益抑制功能固有地识别要增强的图像的边缘。

119. 发明授权

US07420570B2 Methods and systems for video processing using super dithering 有权
标题翻译：使用超级抖动的视频处理方法和系统
公开(公告)号：US07420570B2
公开(公告)日：2008-09-02
申请号：US11106812
申请日：2005-04-14
申请人： Ning Xu , Yeong-Taeg Kim
发明人： Ning Xu , Yeong-Taeg Kim
IPC分类号： G06K9/00 , G09G5/10 , H04N5/66 , H04N7/26 , H04B1/66 , H04N7/32 , G09G5/28
CPC分类号： G09G3/2051
摘要： A super dithering method of color video quantization maintains the perceived video quality on a display with less bit depth of color than the input video. Super dithering relies on both the spatial and temporal properties of human visual system, wherein spatial dithering is applied to account for human eye's low pass spatial property, while temporal dithering is applied to achieve the quantization level of the spatial dithering.
摘要翻译：彩色视频量化的超抖动方法在显示器上保持感知视频质量，比输入视频具有更少的位深度的颜色。超级抖动依赖于人类视觉系统的空间和时间属性，其中应用空间抖动来考虑人眼的低通空间特性，同时应用时间抖动来实现空间抖动的量化水平。

120. 发明申请

US20080204600A1 System and method for video noise reduction using an adaptive temporal method with motion detection and motion compensation 失效
标题翻译：使用具有运动检测和运动补偿的自适应时间方法进行视频降噪的系统和方法
公开(公告)号：US20080204600A1
公开(公告)日：2008-08-28
申请号：US11710594
申请日：2007-02-23
申请人： Ning Xu , Yeong-Taeg Kim
发明人： Ning Xu , Yeong-Taeg Kim
IPC分类号： H04N5/00
CPC分类号： H04N5/144 , H04N5/21
摘要： An adaptive temporal noise reduction method that adaptively combines motion adaptive filtering results and motion compensated results to reduce Gaussian additive noise in video sequences is described herein. The system determines the motion detection and motion compensation results from the current frame and the filtered previous frame. Measurements on the video are used to determine a probabilistic measure of noise that is employed to adaptively combine the motion detection and motion compensation results.
摘要翻译：本文描述了自适应地组合运动自适应滤波结果和运动补偿结果以减少视频序列中的高斯加性噪声的自适应时间噪声降低方法。该系统从当前帧和经过滤的前一帧确定运动检测和运动补偿结果。视频测量用于确定用于自适应地组合运动检测和运动补偿结果的噪声概率测量。

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