公开(公告)号：US08295633B2

公开(公告)日：2012-10-23

申请号：US11696667

申请日：2007-04-04

申请人： Lee Sangkeun ,  Yeong-Taeg Kim

发明人： Lee Sangkeun ,  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。

公开(公告)号：US08289444B2

公开(公告)日：2012-10-16

申请号：US12436650

申请日：2009-05-06

申请人： Zhi Zhou ,  Yeong-taeg Kim

发明人： Zhi Zhou ,  Yeong-taeg Kim

IPC分类号： H04N7/11 ,  H04N11/20

CPC分类号： H04N5/145 ,  H04N7/0127 ,  H04N7/014

摘要： A system and method for video frame interpolation are disclosed. In one embodiment, the method comprises receiving first motion estimation data representing estimated motion of blocks between a first frame and a second frame, receiving second motion estimation data representing estimated motion of blocks between the second frame and a third frame, determining whether an area in an interpolated frame between the first and second frame is an occlusion area based at least in part on the first and second motion estimation data, and estimating characteristics of pixels of the area based in part on the determination.

摘要翻译： 公开了一种用于视频帧插值的系统和方法。 在一个实施例中，该方法包括接收表示在第一帧和第二帧之间的块的估计运动的第一运动估计数据，接收表示在第二帧和第三帧之间的块的估计运动的第二运动估计数据， 第一帧和第二帧之间的内插帧是至少部分地基于第一和第二运动估计数据的遮挡区域，并且部分地基于该确定来估计该区域的像素的特征。

公开(公告)号：US20120057776A1

公开(公告)日：2012-03-08

申请号：US13218444

申请日：2011-08-25

申请人： Li Tao ,  Yeong-Taeg Kim

发明人： Li Tao ,  Yeong-Taeg Kim

IPC分类号： G06K9/00

CPC分类号： G06T7/536

摘要： A method of operation of a three-dimensional display system includes: calculating an edge pixel image from a source image; generating a line histogram from the edge pixel image by applying a transform; calculating a candidate line from the line histogram meeting or exceeding a line category threshold for a horizontal line category, a vertical line category, a diagonal line category, or a combination thereof; calculating a vanishing point on the candidate line; and generating a depth map for the vanishing point for displaying the source image on a first device.

摘要翻译： 三维显示系统的操作方法包括：从源图像计算边缘像素图像; 通过应用变换从边缘像素图像生成线条直方图; 从线条直方图计算候选行，或者超过水平线类别，垂直线类别，对角线类别或其组合的线类别阈值; 计算候选线上的消失点; 以及生成用于在第一设备上显示源图像的消失点的深度图。

公开(公告)号：US08090210B2

公开(公告)日：2012-01-03

申请号：US11394954

申请日：2006-03-30

申请人： Zhi Zhou ,  Yeong-Taeg Kim ,  Ning Xu

发明人： Zhi Zhou ,  Yeong-Taeg Kim ,  Ning Xu

IPC分类号： G06K9/40

CPC分类号： H04N19/80 ,  H04N19/85

摘要： An image processing system implements recursive 3D super precision for processing smoothly changing video image areas by performing temporal noise reduction and then 2D super precision. The temporal noise reduction is applied to two frames, one being the current input low precision frame, and the other being the previous higher precision frame from memory. The 2D super precision is applied to the noise reduced frame to output a high precision frame which is also saved into memory for processing the next incoming frame. The input frame has a limited bit depth while the output image has an increased bit depth.

摘要翻译： 图像处理系统通过执行时间噪声降低然后2D超精度实现递归3D超精度，用于处理平滑变化的视频图像区域。 时间噪声降低被应用于两个帧，一个是当前输入低精度帧，另一个是来自存储器的先前较高精度帧。 2D超精度被应用于降噪帧以输出高精度帧，其也被保存到存储器中用于处理下一帧。 输入帧具有有限的位深度，而输出图像具有增加的位深度。

公开(公告)号：US08063995B2

公开(公告)日：2011-11-22

申请号：US11710626

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： H04N7/18 ,  H04N5/00

CPC分类号： H04N19/85 ,  H04N19/117 ,  H04N19/137 ,  H04N19/182 ,  H04N19/80

摘要： The system described herein is a unified approach to three-dimensional filtering for the reduction of video noise. The technique is based on weight averaging pixels of the filter's output value in a three-dimensional neighborhood, in space and time, of the filter's output value. The weights can be computed for individual factors, such as distance, regional differences, etc., or can be combined into a weight that is indicative of all individual weights.

摘要翻译： 本文描述的系统是用于降低视频噪声的三维滤波的统一方法。 该技术基于滤波器的输出值的三维邻域（空间和时间）中滤波器的输出值的重量平均像素。 可以针对个体因素（例如距离，区域差异等）计算权重，或者可以将其组合成指示所有个体权重的权重。

公开(公告)号：US07925086B2

公开(公告)日：2011-04-12

申请号：US11655321

申请日：2007-01-18

申请人： Zhi Zhou ,  Yeong-Taeg Kim

发明人： Zhi Zhou ,  Yeong-Taeg Kim

IPC分类号： G06K9/34

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/17 ,  H04N19/61 ,  H04N19/80

摘要： A method and a system for adaptively (dynamically) reducing quantization layer reduction for removing quantization artifacts in quantized video signals is provided. Adaptively reducing quantization layer reduction involves detecting if a selected pixel in a quantized image belongs to a ramp area in each of multiple pre-defined directions, dynamically selecting a quantization level for each of the pre-defined directions based on the corresponding detection results, and refining the pixel based on the selected quantization levels.

摘要翻译： 提供了一种用于自动（动态）减少量化层减少以消除量化视频信号中的量化伪像的方法和系统。 自适应地减少量化层减少涉及检测量化图像中的所选择的像素是否属于多个预定义方向中的每一个中的斜坡区域，基于相应的检测结果动态地选择每个预定义方向的量化级别，以及 基于所选择的量化级别来改善像素。

公开(公告)号：US07911538B2

公开(公告)日：2011-03-22

申请号：US11399846

申请日：2006-04-06

申请人： Victor Hyeong-Seok Ha ,  Yeong-Taeg Kim ,  Sangkeun Lee

发明人： Victor Hyeong-Seok Ha ,  Yeong-Taeg Kim ,  Sangkeun Lee

IPC分类号： H04N5/21

CPC分类号： H04N19/86 ,  H04N19/107 ,  H04N19/117 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60 ,  H04N19/61

摘要： A method and apparatus estimates the strength of block artifacts in compressed video is described. Block artifacts are associated with the block-based image/video compression schemes. The block artifacts deteriorate the quality of compressed image and video, especially at low bit rates. A deblocking method measures the strength of the block artifacts at each block boundary and adjusts the deblocking parameters accordingly to improve the performance of the overall deblocking process. A method and device to measure the strength of block artifacts based on the global and local edge information of the current picture is provided.

摘要翻译： 描述了一种方法和装置估计压缩视频中块伪影的强度。 块伪影与基于块的图像/视频压缩方案相关联。 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。 去块方法测量每个块边界处的块伪影的强度，并相应地调整去块参数，以提高整体去块过程的性能。 提供了一种基于当前图像的全局和局部边缘信息来测量块伪影强度的方法和装置。

公开(公告)号：US07808558B2

公开(公告)日：2010-10-05

申请号：US11799345

申请日：2007-04-30

申请人： Peng Lin ,  Yeong-Taeg Kim

发明人： Peng Lin ,  Yeong-Taeg Kim

IPC分类号： H04N5/00 ,  H04N5/21 ,  H04N9/68 ,  G06K9/20 ,  G06K9/40

CPC分类号： H04N9/646

摘要： A superior Color Transient Improvement technique is adaptive to the local image features, so that more natural color edge transition improvement can be accomplished. A gain control function is provided that depends on the local image feature so that different regions of the image can be treated differently. Further, a correction signal is controlled in such a way (by the local image feature) that neither undershoot nor overshoot occurs, eliminating the need for post-processing for undershoot/overshoot removal.

摘要翻译： 优异的色彩瞬态改进技术适用于局部图像特征，从而可以实现更自然的色彩边缘转换改进。 提供了取决于本地图像特征的增益控制功能，使得图像的不同区域可以被不同地对待。 此外，校正信号以这样的方式（通过局部图像特征）被控制，既不会发生下冲也不产生超调，因此不需要后处理用于下冲/过冲去除。

公开(公告)号：US20100226573A1

公开(公告)日：2010-09-09

申请号：US12396877

申请日：2009-03-03

申请人： Surapong Lertrattanapanich ,  Yeong-Taeg Kim

发明人： Surapong Lertrattanapanich ,  Yeong-Taeg Kim

IPC分类号： G06K9/00

CPC分类号： G06T7/13 ,  G06T2207/10016

摘要： Embodiments include systems and methods of determining block edge location in video. In one embodiment, a system includes a block edge map generator configured to generate a binary block map, the block map having indicators representing the locations of block edges in a first direction, a histogram generator configured to accumulate the indicators to form a block edge histogram, the peaks of the histogram corresponding to block edge locations in the image, a low-pass filter to low-pass filter the block edge histogram and form a filtered histogram, a peak locator configured to identify the peaks of the filtered histogram, and a peak refiner configured to refine locations of peaks located in the filtered block edge histogram based on the identified peaks and peaks in the block edge histogram, the refined peak locations indicative of block edge locations, and further configured to provide block locations.

摘要翻译： 实施例包括确定视频中的块边缘位置的系统和方法。 在一个实施例中，系统包括块边缘图生成器，其被配置为生成二进制块映射，块映射表具有表示第一方向上的块边沿的位置的指示符;直方图生成器，被配置为累积指示符以形成块边缘直方图 ，对应于图像中的块边缘位置的直方图的峰值，低通滤波器以低通滤波块边缘直方图并形成滤波直方图，峰值定位器被配置为识别滤波的直方图的峰值，以及 峰值精细器被配置为基于所识别的块边缘直方图中的峰值和峰值，精确的峰值位置，指示块边缘位置，以及进一步被配置为提供块位置，来精细位于经滤波的块边缘直方图中的峰的位置。

公开(公告)号：US20100202663A1

公开(公告)日：2010-08-12

申请号：US12369664

申请日：2009-02-11

申请人： Yeong-Taeg Kim ,  Ning Xu

发明人： Yeong-Taeg Kim ,  Ning Xu

IPC分类号： G06K9/00

CPC分类号： G06K9/00355

摘要： A system and method for adaptively defining a region of interest for motion analysis in digital video is disclosed. In one embodiment, a method of detecting a gesture is disclosed which comprises receiving a video sequence comprising a plurality of frames, determining a region of interest which excludes a portion of the frame, and detecting the gesture within the region of interest.

摘要翻译： 公开了一种用于在数字视频中自适应地定义运动分析的感兴趣区域的系统和方法。 在一个实施例中，公开了一种检测手势的方法，其包括接收包括多个帧的视频序列，确定排除所述帧的一部分的感兴趣区域，以及检测所述感兴趣区域内的手势。