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31. 发明授权

US08184705B2 Method and apparatus for motion compensated filtering of video signals 有权
标题翻译：视频信号的运动补偿滤波方法和装置
公开(公告)号：US08184705B2
公开(公告)日：2012-05-22
申请号：US12145789
申请日：2008-06-25
申请人： Peng Lin
发明人： Peng Lin
IPC分类号： H04N7/12 , H04N11/04
CPC分类号： H04N19/117 , H04N19/139 , H04N19/176 , H04N19/577 , H04N19/85
摘要： A method and apparatus for filtering video data. First and second frames of the video data are stored. Motion adapted spatio-temporal filter (MASTF) pixel values of the second frame are calculated using pixel values of the first and second frames. The second frame is compared to the first frame to estimate motion vectors (MVs) for the second frame. Pixel MV error level indicators for the second frame are determined using the pixel values of the first and second frames and the MVs of pixels in the second frame. Motion compensated temporal filter (MCTF) pixel values of the second frame are calculated using the pixel values of the first and second frames and the MVs of pixels in the second frame. For each pixel in the second frame, a filtered pixel value is calculated using its MASTF and MCTF pixel values and its pixel MV error level indicator.
摘要翻译：一种用于过滤视频数据的方法和装置。存储视频数据的第一帧和第二帧。使用第一和第二帧的像素值来计算第二帧的运动适应时空滤波器（MASTF）像素值。将第二帧与第一帧进行比较，以估计第二帧的运动矢量（MV）。使用第二帧的像素值和第二帧中的像素的MV来确定第二帧的像素MV误差水平指示符。使用第二帧的像素值和第二帧中的像素的MV来计算第二帧的运动补偿时间滤波器（MCTF）像素值。对于第二帧中的每个像素，使用其MASTF和MCTF像素值及其像素MV误差电平指示符来计算滤波像素值。

32. 发明授权

US08081224B2 Method and apparatus for image stabilization using multiple image captures 有权
标题翻译：使用多个图像捕获的图像稳定的方法和装置
公开(公告)号：US08081224B2
公开(公告)日：2011-12-20
申请号：US12149723
申请日：2008-05-07
申请人： Peng Lin
发明人： Peng Lin
IPC分类号： H04N5/228 , H04N5/235 , H04N5/262 , G06K9/40
CPC分类号： H04N5/23248 , H04N5/23267
摘要： A method and apparatus for image stabilization while mitigating the amplification of image noise by using a motion adaptive system employing spatial and temporal filtering of pixel signals from multiple captured frames of a scene.
摘要翻译：一种用于图像稳定的方法和装置，同时通过使用对来自场景的多个拍摄帧的像素信号进行空间和时间滤波的运动自适应系统来减轻图像噪声的放大。

33. 发明授权

US07808558B2 Adaptive color transient improvement 失效
标题翻译：自适应色彩瞬态改善
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。

34. 发明申请

US20090323808A1 METHOD AND APPARATUS FOR MOTION COMPENSATED FILTERING OF VIDEO SIGNALS 有权
标题翻译：用于视频信号的运动补偿滤波的方法和装置
公开(公告)号：US20090323808A1
公开(公告)日：2009-12-31
申请号：US12145789
申请日：2008-06-25
申请人： Peng Lin
发明人： Peng Lin
IPC分类号： H04N7/26
CPC分类号： H04N19/117 , H04N19/139 , H04N19/176 , H04N19/577 , H04N19/85
摘要： A method and apparatus for filtering video data. First and second frames of the video data are stored. Motion adapted spatio-temporal filter (MASTF) pixel values of the second frame are calculated using pixel values of the first and second frames. The second frame is compared to the first frame to estimate motion vectors (MVs) for the second frame. Pixel MV error level indicators for the second frame are determined using the pixel values of the first and second frames and the MVs of pixels in the second frame. Motion compensated temporal filter (MCTF) pixel values of the second frame are calculated using the pixel values of the first and second frames and the MVs of pixels in the second frame. For each pixel in the second frame, a filtered pixel value is calculated using its MASTF and MCTF pixel values and its pixel MV error level indicator.
摘要翻译：一种用于过滤视频数据的方法和装置。存储视频数据的第一帧和第二帧。使用第一和第二帧的像素值来计算第二帧的运动适应时空滤波器（MASTF）像素值。将第二帧与第一帧进行比较，以估计第二帧的运动矢量（MV）。使用第二帧的像素值和第二帧中的像素的MV来确定第二帧的像素MV误差水平指示符。使用第二帧的像素值和第二帧中的像素的MV来计算第二帧的运动补偿时间滤波器（MCTF）像素值。对于第二帧中的每个像素，使用其MASTF和MCTF像素值及其像素MV误差电平指示符来计算滤波像素值。

35. 发明申请

US20090161756A1 Method and apparatus for motion adaptive pre-filtering 审中-公开
标题翻译：运动自适应预滤波的方法和装置
公开(公告)号：US20090161756A1
公开(公告)日：2009-06-25
申请号：US12003047
申请日：2007-12-19
申请人： Peng Lin
发明人： Peng Lin
IPC分类号： H04N11/02 , H04N5/335
CPC分类号： H04N5/217 , G06T5/002 , G06T5/20 , G06T5/50 , G06T2207/10016 , G06T2207/20012 , G06T2207/20182 , G06T2207/20192 , H04N5/144 , H04N5/772 , H04N5/917 , H04N19/117 , H04N19/137 , H04N19/172 , H04N19/186 , H04N19/85
摘要： A video filter includes a motion detector to detect motion between frames of a video for each pixel, a shape adaptive spatial filter and a weighted temporal filter. The spatial filter and the temporal filter are smoothly mixed together based on the amount of motion detected by the motion detector for each pixel. When the motion detected by the motion detector is low, the video filter tends to do more temporal filtering. When the motion detected by the motion detector is high, the video filter tends to do more spatial filtering.
摘要翻译：视频滤波器包括运动检测器，用于检测每个像素的视频帧之间的运动，形状自适应空间滤波器和加权的时间滤波器。基于每个像素的运动检测器检测的运动量，将空间滤波器和时间滤波器平滑地混合在一起。当由运动检测器检测到的运动较低时，视频滤波器趋向于进行更多的时间滤波。当由运动检测器检测到的运动高时，视频滤波器趋向于进行更多的空间滤波。

36. 发明申请

US20080212676A1 Motion parameter engine for true motion 有权
标题翻译：运动参数引擎用于真实运动
公开(公告)号：US20080212676A1
公开(公告)日：2008-09-04
申请号：US11713323
申请日：2007-03-02
申请人： Ming-Chang Liu , Peng Lin
发明人： Ming-Chang Liu , Peng Lin
IPC分类号： H04N11/04
CPC分类号： H04N19/57 , H04N19/523 , H04N19/527 , H04N19/56 , H04N19/61
摘要： Local motion estimation is described herein. Each picture of a video is partitioned into blocks for the local motion estimation. An extended-block FFT is calculated for each block, where the extended-block denotes that a certain area around the block is also included for applying FFT. Extending the block for FFT helps to account for the motion of objects that are moving into or out of the block. Phase correlation is applied to attain a set of Motion Vector (MV) candidates for the blocks, and a cost function is evaluated for each MV. If no MV candidate produces a cost function below a pre-defined threshold, a hierarchical variable block matching search is applied and the process is repeated with blocks for finer resolution. Also, predictive MV candidates are used during the block matching search along with temporal constraints tracking to select an MV that yields the minimum cost function.
摘要翻译：本文描述了局部运动估计。视频的每个图像被分割成用于局部运动估计的块。对于每个块计算扩展块FFT，其中扩展块表示块周围的某个区域也被包括以用于FFT。扩展用于FFT的块有助于解释移入或移出块的对象的运动。应用相位相关来获得块的运动矢量（MV）候选，并且为每个MV评估成本函数。如果没有MV候选者产生低于预定义阈值的成本函数，则应用分层可变块匹配搜索，并且使用块重复该过程以进行更精细的分辨。此外，在块匹配搜索期间使用预测MV候选以及时间约束跟踪来选择产生最小成本函数的MV。

37. 发明申请

US20070216787A1 Image unsharpness test method for a camera device 有权
标题翻译：图像不清晰度测试方法
公开(公告)号：US20070216787A1
公开(公告)日：2007-09-20
申请号：US11376205
申请日：2006-03-16
申请人： Peng Lin , Ming Leaw
发明人： Peng Lin , Ming Leaw
IPC分类号： H04N5/208
CPC分类号： H04N5/23212 , H04N5/23222 , H04N5/23293
摘要： The present invention discloses an image unsharpness test method for a camera device, wherein firstly, during the focusing stage of an electronic camera device, the image with the highest sharpness is selected to be a contrast image; next, the contrast image is compared with a captured image to obtain the sharpness difference between the contrast image and the captured image; if the difference is too great, the captured image is determined to be unsharp; vice versa, if the difference is very small, the captured image is determined to be sharp. Thereby, the image unsharpness test method for a camera device of the present invention not only can determine whether a captured is sharp enough but also can reduce the photographic errors and promote photographic efficiency.
摘要翻译：本发明公开了一种用于照相机装置的图像不清晰度测试方法，其中首先，在电子照相机装置的聚焦阶段期间，将具有最高锐度的图像选择为对比度图像; 接下来，将对比度图像与拍摄图像进行比较，以获得对比度图像和拍摄图像之间的锐度差; 如果差异太大，则捕获的图像被确定为不清晰; 反之亦然，如果差异非常小，则捕获的图像被确定为锐利的。因此，本发明的照相机装置的图像不清晰度测试方法不仅可以确定拍摄是否足够锐利，还可以减少拍摄错误并提高照相效率。

38. 发明申请

US20070200958A1 Adaptive color transient improvement 失效
公开(公告)号：US20070200958A1
公开(公告)日：2007-08-30
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： H04N5/21
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.

39. 发明授权

US07260272B2 Method and apparatus for noise reduction using discrete wavelet transform 失效
标题翻译：使用离散小波变换降噪的方法和装置
公开(公告)号：US07260272B2
公开(公告)日：2007-08-21
申请号：US10617064
申请日：2003-07-10
申请人： Peng Lin , Yeong-Taeg Kim
发明人： Peng Lin , Yeong-Taeg Kim
IPC分类号： G06K9/40
CPC分类号： G06K9/40 , G06T5/002 , G06T5/10 , G06T2207/10016 , G06T2207/20064
摘要： An improved noise reduction process by wavelet thresholding utilizes a discrete wavelet transform to decompose the image into different resolution levels. A thresholding function is then applied in different resolution levels with different threshold values to eliminate insignificant wavelet coefficients which mainly correspond to the noise in the original image. Finally, an inverse discrete wavelet transform is applied to generate the noise-reduced video image. The threshold values are based on the relationships between the noise standard deviations of different decomposition levels in the wavelet domain and the noise standard deviation of the original image.
摘要翻译：通过小波阈值处理改进的降噪过程利用离散小波变换将图像分解成不同的分辨率级别。然后将阈值函数应用于具有不同阈值的不同分辨率级别，以消除主要对应于原始图像中的噪声的无意义的小波系数。最后，应用逆离散小波变换来生成降噪视频图像。阈值基于小波域中不同分解级别的噪声标准偏差与原始图像的噪声标准偏差之间的关系。

40. 发明申请

US20060245506A1 Method and apparatus for reducing mosquito noise in decoded video sequence 失效
标题翻译：解码视频序列中减少蚊子噪音的方法和装置
公开(公告)号：US20060245506A1
公开(公告)日：2006-11-02
申请号：US11121819
申请日：2005-05-02
申请人： Peng Lin , Yeong-Taeg Kim , Seong-Joo Lee
发明人： Peng Lin , Yeong-Taeg Kim , Seong-Joo Lee
IPC分类号： H04B1/66
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/17 , H04N19/60 , H04N19/80
摘要： A ringing area detector classifies the input image into two regions: a mosquito noise region (i.e. filtering region) and a non-mosquito noise region (i.e. non-filtering region), and uses this classification information to adaptively remove the mosquito noise in a mosquito noise reduction system. The mosquito noise reduction system includes a ringing area detector, a local noise power estimator, a smoothing filter, and a mixer. The ringing area detector includes an edge detector, a near edge detector, a texture detector, and a filtering region decision block. The ringing detection block detects the ringing area where the smoothing filter is to be applied. The local noise power estimator controls the filter strength of the smoothing filter. The smoothing filter smoothes the input image. The mixer mixes the smoothed image and the original image properly based on the region information from the ringing area detection block.
摘要翻译：振铃区域检测器将输入图像分为两个区域：蚊子噪声区域（即滤波区域）和非蚊子区域（即非滤波区域），并使用该分类信息自适应地消除蚊子中的蚊子噪声降噪系统蚊式降噪系统包括振铃区域检测器，局部噪声功率估计器，平滑滤波器和混频器。振铃区域检测器包括边缘检测器，近边缘检测器，纹理检测器和滤波区域判定块。振铃检测块检测要应用平滑滤波器的振铃区域。本地噪声功率估计器控制平滑滤波器的滤波器强度。平滑滤波器平滑输入图像。混合器根据来自振铃区域检测块的区域信息正确地混合平滑图像和原始图像。

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