公开(公告)号：US08682111B2

公开(公告)日：2014-03-25

申请号：US13489240

申请日：2012-06-05

申请人： Yong Huang ,  Lucas Hui

发明人： Yong Huang ,  Lucas Hui

IPC分类号： G06K9/32

CPC分类号： G06T3/4007

摘要： The methods and systems of this invention allow for independent adaptive control of ringing and overshoot effects in 2-dimensional array interpolation processes, including in image and video rescaling and analysis. The methods and systems can use either a column-wise or a row-wise interpolation, or a combination thereof. Each uses a respective preliminary interpolation of data, followed by ringing and/or overshoot control. Controllable parameters allow variability in the amount of ringing and/or overshoot retained in the interpolated data. The ringing and overshoot controls apply a local analysis of the data to adjust the preliminary interpolation results. The methods may be repeated iteratively, for example, to obtain a desired rescaling of an image data array.

摘要翻译： 本发明的方法和系统允许对二维阵列插值过程中的振铃和过冲效应的独立自适应控制，包括在图像和视频重新缩放和分析中。 方法和系统可以使用列逐行或逐行插值，或其组合。 每个都使用数据的相应初步内插，随后是振铃和/或过冲控制。 可控参数允许内插数据中保留的振铃量和/或过冲的变化。 振铃和过冲控制应用数据的局部分析来调整初步插值结果。 可以重复地重复这些方法，例如，以获得图像数据阵列的期望的重新缩放。

公开(公告)号：US08537901B2

公开(公告)日：2013-09-17

申请号：US12978154

申请日：2010-12-23

申请人： Xiaoyun Deng ,  Lucas Hui

发明人： Xiaoyun Deng ,  Lucas Hui

IPC分类号： H04B1/66

CPC分类号： H04N5/144 ,  H04N7/0115

摘要： Aspects of the invention are directed towards an apparatus and method for detecting conventional and exotic cadences in video sequences. The cadence detector includes a motion auto-correlation unit using the inter-frame/field motion information to detect the cadence and a motion cross-correlation unit using the inter-frame/field motion information and the detected cadence to determine the cadence phase. The cadence detector also may include a reset signal generator to generate a reset signal to control the motion auto-correlation unit and the motion cross-correlation unit. The exotic cadence detector is robust and may support many cadences with reduced cadence detection latency as compared to the prior art.

摘要翻译： 本发明的方面涉及一种用于检测视频序列中的常规和异常节奏的装置和方法。 节奏检测器包括使用帧间/场运动信息来检测节奏的运动自相关单元和使用帧间/场运动信息和检测到的节奏的运动互相关单元来确定节奏相位。 节奏检测器还可以包括复位信号发生器以产生复位信号以控制运动自相关单元和运动互相关单元。 异国情调的振动检测器是鲁棒的，并且可以支持与现有技术相比减少的节奏检测延迟的许多节奏。

公开(公告)号：US08471962B2

公开(公告)日：2013-06-25

申请号：US13174194

申请日：2011-06-30

申请人： Xiaoyun Deng ,  Lucas Hui

发明人： Xiaoyun Deng ,  Lucas Hui

IPC分类号： H04N11/20 ,  H04N5/14

CPC分类号： H04N7/012

摘要： Aspects of the invention are directed towards an apparatus and method for detecting local video pixels in mixed cadence video. The local video detector comprises a comb detector that is adaptive to the contour of moving objects and local contrast, a motion detector that is robust to false motion due to vertical details, and a fader value estimator that provides a video confidence value to a fader that combines film mode and video mode processing results. The coupling of the local video detector to a film mode detector increases the robustness, accuracy, and efficiency of local film/video mode processing as compared to the prior art.

摘要翻译： 本发明的方面涉及一种用于检测混合节奏视频中的局部视频像素的装置和方法。 本地视频检测器包括一个适应于运动对象轮廓和局部对比度的梳状检测器，由于垂直细节而对假运动而鲁棒的运动检测器，以及向推子提供视频置信度值的推子值估计器， 结合电影模式和视频模式处理结果。 与现有技术相比，局部视频检测器与胶片模式检测器的耦合增加了本地胶片/视频模式处理的鲁棒性，准确度和效率。

公开(公告)号：US20130121424A1

公开(公告)日：2013-05-16

申请号：US13293978

申请日：2011-11-10

申请人： Xiaoyun DENG ,  Patricia Wei Yin CHIANG ,  Lucas HUI

发明人： Xiaoyun DENG ,  Patricia Wei Yin CHIANG ,  Lucas HUI

IPC分类号： H04N7/26

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/139 ,  H04N19/176

摘要： Digital noise removal methods and systems for picture quality improvement on next generation high quality set-top-box and digital TV SOCs is disclosed with particular to a de-blocking method and system that is effective on on-grid and off-grid blocky artifacts generated by lossy video compression standards. Blocky artifacts are filtered by extracting motions vectors for a current pixel block, calculating off-grid positions based on the extracted motion vectors, and applying de-blocking filtering along the calculated off-grid positions. The methods and systems can further skip filtering on-grid blocky artifacts to be filtered by an on-grid de-blocking filter known in the art.

摘要翻译： 公开了用于下一代高质量机顶盒和数字TV SOC的图像质量改进的数字噪声去除方法和系统，特别涉及一种解除阻挡的方法和系统，其对生成的并网和离网块状伪影有效 通过有损视频压缩标准。 通过提取当前像素块的运动矢量，基于所提取的运动矢量计算离网位置，以及沿着所计算的离网位置应用解块滤波来对块状伪像进行滤波。 所述方法和系统可以进一步跳过通过本领域已知的并网去阻塞滤波器过滤网格块状伪影的过滤。

公开(公告)号：US20120133836A1

公开(公告)日：2012-05-31

申请号：US12955188

申请日：2010-11-29

申请人： Anna Raffalli ,  Haiyun Wang ,  Lucas Hui

发明人： Anna Raffalli ,  Haiyun Wang ,  Lucas Hui

IPC分类号： H04N5/21

CPC分类号： H04N5/21 ,  H04N19/117 ,  H04N19/14 ,  H04N19/172 ,  H04N19/86

摘要： A frame level noise estimate for an image can be determined. An image processor includes a high pass filter unit configured to perform high-pass spatial filtering of image data for first and second frames to produce high-pass spatially filtered information for the first frame and the second frame. A cumulative histogram generator is configured to analyze the high-pass spatially filtered information for the first frame and the second frame to produce a first cumulative histogram for the first frame and a second cumulative histogram for the second frame. A comparator is configured to determine a difference value between the first and second cumulative histograms. A mapping unit is configured to determine an estimated noise value based on the difference value.

摘要翻译： 可以确定图像的帧级噪声估计。 图像处理器包括高通滤波器单元，其被配置为对第一和第二帧执行图像数据的高通空间滤波，以产生用于第一帧和第二帧的高通空间滤波信息。 累积直方图生成器被配置为分析第一帧和第二帧的高通空间滤波信息，以产生第一帧的第一累积直方图和第二帧的第二累积直方图。 比较器被配置为确定第一和第二累积直方图之间的差值。 映射单元被配置为基于该差值来确定估计的噪声值。

公开(公告)号：US07092441B1

公开(公告)日：2006-08-15

申请号：US09646716

申请日：1998-03-20

申请人： Yau Wai Lucas Hui ,  Hong Lye Oh

发明人： Yau Wai Lucas Hui ,  Hong Lye Oh

IPC分类号： H04N7/12

CPC分类号： H04N19/192 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/146 ,  H04N19/149 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/61

摘要： A method and apparatus control bit rates used in a moving pictures encoder, such as an MPEG standard encoder. A sequence of moving pictures is divided into segments each of which comprises one or more groups of pictures. A constant overall bit rate is specified for the sequence of pictures, but variable bit rate encoding is used within each segment. A difference between the number of bits allocated for encoding the segment and the actual bits used for encoding is determined, and the difference is distributed over one or more subsequent segments.

摘要翻译： 一种方法和装置控制在诸如MPEG标准编码器的运动图像编码器中使用的比特率。 一系列运动图像被分成多个段，每个段包括一组或多组图像。 为图像序列指定恒定的总比特率，但在每个片段中使用可变比特率编码。 确定分配用于编码该段的位数与用于编码的实际位之间的差异，并且该差在一个或多个后续段上分布。

公开(公告)号：US20060110062A1

公开(公告)日：2006-05-25

申请号：US10995937

申请日：2004-11-23

申请人： Patricia Chiang ,  Lucas Hui

发明人： Patricia Chiang ,  Lucas Hui

IPC分类号： G06K9/40

CPC分类号： H04N19/16 ,  H04N19/117 ,  H04N19/136 ,  H04N19/154 ,  H04N19/157

摘要： A method includes receiving image information representing at least one image. The image information defines multiple pixels in the at least one image. The method also includes identifying filter weights associated with the pixels. The filter weights are based on edge contents of at least a portion of the at least one image. In addition, the method includes filtering the image information using the identified filter weights.

公开(公告)号：US06870568B1

公开(公告)日：2005-03-22

申请号：US09857121

申请日：1998-12-02

申请人： Yau Wai Lucas Hui

发明人： Yau Wai Lucas Hui

IPC分类号： H04N7/01 ,  H04N7/26

CPC分类号： H04N7/0112

摘要： A method of processing video data to detect field characteristics of the data, including processing pixel values of the data to obtain differences between the values of two successive fields of the data, processing the difference values to detect interlace patterns in the successive fields, determining if the successive fields belong to a progressive frame based on detection of the interlace patterns, and generating a progressive frame output indicating that a progressive frame has been detected. The pixel values of the first field of the successive fields and a subsequent field to the successive fields are processed to obtain further difference values to determine if the subsequent field is a redundant field, when the progressive frame output is generated.

摘要翻译： 一种处理视频数据以检测数据的场特性的方法，包括处理数据的像素值以获得数据的两个连续场的值之间的差异，处理差值以检测连续场中的交错图案，确定是否 基于隔行扫描图案的检测，连续的场属于逐行帧，并且产生指示已经检测到逐行帧的逐行帧输出。 处理连续字段的第一字段的像素值和连续字段的后续字段被处理以获得进一步的差值，以便当生成逐行帧输出时确定后续字段是否是冗余字段。

公开(公告)号：US08731323B2

公开(公告)日：2014-05-20

申请号：US13304118

申请日：2011-11-23

申请人： Haiyun Wang ,  Lucas Hui

发明人： Haiyun Wang ,  Lucas Hui

IPC分类号： G06K9/40

CPC分类号： H04N5/21 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20021 ,  G06T2207/20192 ,  H04N5/142 ,  H04N19/86

摘要： A method and apparatus are disclosed for identifying and removing banding artifacts (i.e., false contours) resulting from insufficient bit depth caused by digital image quantization, conversion, and/or compression. This method includes: explicitly identifying texture block and flat block; de-termination of filter window sizes with the consideration of handling transitions between texture block and flat block; de-banding filtering with edge protection; and noise shaping according to de-banding filter result.

摘要翻译： 公开了一种用于识别和去除由数字图像量化，转换和/或压缩引起的比特深度不足导致的带状伪影（即假轮廓）的方法和装置。 该方法包括：明确识别纹理块和平块; 考虑处理纹理块和平块之间的过渡的过滤器窗口尺寸的解除终止; 边缘保护去带滤波; 并根据去带滤波器的结果进行噪声整形。

公开(公告)号：US20130322784A1

公开(公告)日：2013-12-05

申请号：US13489240

申请日：2012-06-05

申请人： Yong HUANG ,  Lucas HUI

发明人： Yong HUANG ,  Lucas HUI

IPC分类号： G06K9/32

CPC分类号： G06T3/4007

摘要： The methods and systems of this invention allow for independent adaptive control of ringing and overshoot effects in 2-dimensional array interpolation processes, including in image and video rescaling and analysis. The methods and systems can use either a column-wise or a row-wise interpolation, or a combination thereof. Each uses a respective preliminary interpolation of data, followed by ringing and/or overshoot control. Controllable parameters allow variability in the amount of ringing and/or overshoot retained in the interpolated data. The ringing and overshoot controls apply a local analysis of the data to adjust the preliminary interpolation results. The methods may be repeated iteratively, for example, to obtain a desired rescaling of an image data array.

摘要翻译： 本发明的方法和系统允许对二维阵列插值过程中的振铃和过冲效应的独立自适应控制，包括在图像和视频重新缩放和分析中。 方法和系统可以使用列逐行或逐行插值，或其组合。 每个都使用数据的相应初步内插，随后是振铃和/或过冲控制。 可控参数允许内插数据中保留的振铃量和/或过冲的变化。 振铃和过冲控制应用数据的局部分析来调整初步插值结果。 可以重复地重复这些方法，例如，以获得图像数据阵列的期望的重新缩放。