公开(公告)号：US08682111B2

公开(公告)日：2014-03-25

申请号：US13489240

申请日：2012-06-05

Applicant: Yong Huang ,  Lucas Hui

Inventor： Yong Huang ,  Lucas Hui

IPC: G06K9/32

CPC classification number: G06T3/4007

Abstract: 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.

Abstract translation: 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

Applicant: Xiaoyun Deng ,  Lucas Hui

Inventor： Xiaoyun Deng ,  Lucas Hui

IPC: H04B1/66

CPC classification number: H04N5/144 ,  H04N7/0115

Abstract: 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.

Abstract translation: 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

Applicant: Xiaoyun Deng ,  Lucas Hui

Inventor： Xiaoyun Deng ,  Lucas Hui

IPC: H04N11/20 ,  H04N5/14

CPC classification number: H04N7/012

Abstract: 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.

Abstract translation: 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：US20120133836A1

公开(公告)日：2012-05-31

申请号：US12955188

申请日：2010-11-29

Applicant: Anna Raffalli ,  Haiyun Wang ,  Lucas Hui

Inventor： Anna Raffalli ,  Haiyun Wang ,  Lucas Hui

IPC: H04N5/21

CPC classification number: H04N5/21 ,  H04N19/117 ,  H04N19/14 ,  H04N19/172 ,  H04N19/86

Abstract: 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.

Abstract translation: 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：US20060110062A1

公开(公告)日：2006-05-25

申请号：US10995937

申请日：2004-11-23

Applicant: Patricia Chiang ,  Lucas Hui

Inventor： Patricia Chiang ,  Lucas Hui

IPC: G06K9/40

CPC classification number: H04N19/16 ,  H04N19/117 ,  H04N19/136 ,  H04N19/154 ,  H04N19/157

Abstract: 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：US09326007B2

公开(公告)日：2016-04-26

申请号：US13293978

申请日：2011-11-10

Applicant: Xiaoyun Deng ,  Patricia Wei Yin Chiang ,  Lucas Hui

Inventor： Xiaoyun Deng ,  Patricia Wei Yin Chiang ,  Lucas Hui

IPC: H04N7/26 ,  H04N19/86 ,  H04N19/139 ,  H04N19/176 ,  H04N19/117

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/139 ,  H04N19/176

Abstract: 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.

Abstract translation: 公开了用于下一代高质量机顶盒和数字电视SOC的图像质量改进的数字噪声消除方法和系统，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：US08781248B2

公开(公告)日：2014-07-15

申请号：US12695220

申请日：2010-01-28

Applicant: Haiyun Wang ,  Lucas Hui

Inventor： Haiyun Wang ,  Lucas Hui

IPC: G06T5/00 ,  G06T5/40 ,  G06T5/50

CPC classification number: H04N5/202

Abstract: The appearance of image details can be preserved and/or enhanced by applying contrast adaptive gain to the high spatial frequency component of the luminance information. The image details in bright and/or dark regions can be further boosted by applying a local mean adaptive gain. The contrast transfer mapping curve for luminance contrast enhancement can be re-scaled to account for the applied gain. The re-scaling may be performed from frame to frame of displayed video. The re-scaling may be temporally controlled for subsequent frames to make the re-scaling change gradually to prevent flickering.

Abstract translation: 可以通过对亮度信息的高空间频率分量应用对比度自适应增益来保持和/或增强图像细节的外观。 亮区和/或暗区的图像细节可以通过应用局部平均自适应增益进一步提升。 用于亮度对比度增强的对比度转移映射曲线可以重新缩放以考虑所应用的增益。 可以从显示视频的帧到帧执行重新缩放。 对于随后的帧可以暂时控制重新缩放以使得重新缩放逐渐变化以防止闪烁。

公开(公告)号：US08587726B2

公开(公告)日：2013-11-19

申请号：US12655254

申请日：2009-12-23

Applicant: Yong Huang ,  Lucas Hui ,  Haiyun Wang ,  Fritz Lebowsky

Inventor： Yong Huang ,  Lucas Hui ,  Haiyun Wang ,  Fritz Lebowsky

IPC: H04N9/74

CPC classification number: G06T3/4007 ,  G06T5/002 ,  G06T5/003 ,  G06T5/20 ,  G06T2200/12 ,  G06T2207/10016 ,  G06T2207/20192

Abstract: Provided are a digital video rescaling system, a method of rescaling video images, and a chip comprising a computer executable medium embedded therein computer executable instructions for rescaling video images.

Abstract translation: 提供了一种数字视频重新缩放系统，一种重新缩放视频图像的方法，以及包括嵌入其中的计算机可执行介质的芯片，用于重新调整视频图像的计算机可执行指令。

公开(公告)号：US08098334B2

公开(公告)日：2012-01-17

申请号：US12406832

申请日：2009-03-18

Applicant: Yong Huang ,  Fritz Lebowsky ,  Haiyun Wang ,  Lucas Hui

Inventor： Yong Huang ,  Fritz Lebowsky ,  Haiyun Wang ,  Lucas Hui

IPC: H04N5/21

CPC classification number: G06T3/403 ,  G06T2200/28

Abstract: A video image processing system is described that generates the interpolated video images with sharp and jaggedness-free edges. A method of video image processing is also described that interpolates video images to generate the video images with sharp and jaggedness-free edges. The video image processing system receives and makes input image data available for further processing; analyzes the local features of the input image data; filters the input image data before performing interpolation process; modifies the phase value adaptive to the local edge distance; rescales the input image data in horizontal interpolation using the modified phase value; and rescales the horizontally interpolated image data in vertical interpolation using modified phase value.

Abstract translation: 描述了一种视频图像处理系统，其生成具有锐利和无锯齿边缘的内插视频图像。 还描述了一种视频图像处理方法，其内插视频图像以产生具有锐利和无锯齿边缘的视频图像。 视频图像处理系统接收并使输入图像数据可用于进一步处理; 分析输入图像数据的局部特征; 在进行插值处理之前对输入图像数据进行滤波; 修改自适应局部边缘距离的相位值; 使用修改的相位值在水平插值中调整输入图像数据; 并使用修改的相位值在垂直内插中重新调整水平内插图像数据。

公开(公告)号：US20070064816A1

公开(公告)日：2007-03-22

申请号：US11514723

申请日：2006-09-01

Applicant: Patricia Chiang ,  Lucas Hui

Inventor： Patricia Chiang ,  Lucas Hui

IPC: H04N7/12 ,  H04B1/66

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/139 ,  H04N19/14 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61

Abstract: A method for adaptive pre-filtering is disclosed, comprising the steps of: extracting tuning parameters from video encoding process; processing these tuning parameters to generate control parameters representative of the properties of the video data processed; coupling the control parameters to filter response; generating filter coefficients on selected filter response; and filtering the video data with the filter coefficients before video encoding. The filtering of video data is thus adapted to at least one or more tuning parameters of the video data and the encoding process. The filtering decreases the complexity of encoding by attenuation of high frequency, effectively decreasing the quantization step and reducing compression artifacts.

Abstract translation: 公开了一种用于自适应预滤波的方法，包括以下步骤：从视频编码过程中提取调谐参数; 处理这些调整参数以产生表示所处理的视频数据的属性的控制参数; 将控制参数耦合到过滤器响应; 在选择的滤波器响应上产生滤波器系数; 并且在视频编码之前用滤波器系数对视频数据进行滤波。 因此，视频数据的滤波适应于视频数据和编码过程的至少一个或多个调谐参数。 滤波通过高频衰减降低了编码的复杂度，有效地减少了量化步长并减少了压缩伪像。