专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

WO2008042029A2 AUTOMATIC PARAMETER ESTIMATION FOR ADAPTIVE PIXEL-BASED FILTERING 审中-公开
标题翻译：基于自适应像素滤波的自动参数估计
公开(公告)号：WO2008042029A2
公开(公告)日：2008-04-10
申请号：PCT/US2007/014890
申请日：2007-06-25
申请人： THOMSON LICENSING , BHAGAVATHY, Sitaram , LLACH, Joan
发明人： BHAGAVATHY, Sitaram , LLACH, Joan
CPC分类号： G06T5/002 , G06T5/20 , G06T5/50 , G06T2207/10016 , G06T2207/20182
摘要： One particular automatic parameter estimation method and apparatus estimates low level filtering parameters from one or more user controlled high-level filtering parameters. The high level filtering parameters are strength and quality, where strength indicates how much noise reduction will be performed, and quality indicates a tolerance which controls the balance between filtering uniformity and loss of detail. The low level filtering parameters that can be estimated include the spatial neighborhood and/or temporal neighborhood size from which pixel candidates are selected, and thresholds used to verify the 'goodness' of the spatially or temporally predicted candidate pixels. More generally, a criterion for filtering digital image data is accessed (902), and a value is determined (904) for a parameter for use in filtering digital image data, the value being determined based on whether the value results in the criterion being satisfied for at least a portion of a digital image.
摘要翻译：一种特定的自动参数估计方法和装置根据一个或多个用户控制的高级滤波参数来估计低级滤波参数。高级别的过滤参数是强度和质量，其中强度指示将执行多少噪声降低，并且质量指示控制过滤均匀性和细节丢失之间平衡的容差。可以估计的低级滤波参数包括从其中选择像素候选的空间邻域和/或时间邻域大小，以及用于验证空间或时间预测的候选像素的“良好”的阈值。更一般地，访问（902）用于过滤数字图像数据的标准，并且针对用于过滤数字图像数据的参数确定（904）值，该值基于该值是否导致标准被满足来确定至少为数字图像的一部分。

22. 发明申请

WO2008088901A3 REDUCING CONTOURS IN DIGITAL IMAGES 审中-公开
公开(公告)号：WO2008088901A3
公开(公告)日：2008-07-24
申请号：PCT/US2008/000729
申请日：2008-01-18
申请人： THOMSON LICENSING , BHAGAVATHY, Sitaram , LLACH, Joan , ZHAI, Jie Fu
发明人： BHAGAVATHY, Sitaram , LLACH, Joan , ZHAI, Jie Fu
IPC分类号： G06T5/00
摘要： One or more implementations access (400) a digital image containing one or more bands. Adjacent bands of the one or more bands have a difference in color resulting in a contour between the adjacent bands. The one or more implementations apply (405) an algorithm to at least a portion of the digital image for reducing visibility of a contour. The algorithm is based on a value representing the fraction of pixels in a region of the digital image having a particular color value.

23. 发明申请

WO2010083021A1 DETECTION OF FIELD LINES IN SPORTS VIDEOS 审中-公开
标题翻译：运动场景线路检测
公开(公告)号：WO2010083021A1
公开(公告)日：2010-07-22
申请号：PCT/US2010/000032
申请日：2010-01-07
申请人： THOMSON LICENSING , JACOB, Mithun, George , BHAGAVATHY, Sitaram , BARCON-PALAU, Jesus , LLACH, Joan
发明人： JACOB, Mithun, George , BHAGAVATHY, Sitaram , BARCON-PALAU, Jesus , LLACH, Joan
IPC分类号： H04N7/18
CPC分类号： G06T7/13 , G06T7/181 , G06T2207/10016 , G06T2207/20016 , G06T2207/20061 , G06T2207/20164 , G06T2207/30228
摘要： A method for accurately and robustly detecting field lines in an image, such as a frame of a sports video, includes: convolving the image with a Laplacian operator to generate a Laplacian image emphasizing likely line pixels; removing non-playfield related pixels from the Laplacian image, including pixels lying outside of the playfield and pixels representing players within the playfield; contrast stretching the resultant Laplacian image; iteratively applying a Hough transform to the contrast-stretched Laplacian image to detect lines, wherein each iteration results in the detection of one or more field lines which are removed prior to the next iteration, thus reducing the complexity of the next iteration; identifying fragments along each field line detected; filling gaps in the field lines, wherein the gaps are analyzed so that only those gaps that are not likely due to occlusion by players or other non-line objects are filled; and providing a binary mask indicating the pixels representing field lines.
摘要翻译：一种用于准确且鲁棒地检测诸如运动视频的帧的图像中的场线的方法包括：使用拉普拉斯算子来卷积图像以生成强调可能线像素的拉普拉斯图像; 从拉普拉斯图像中去除非播放场相关像素，包括位于播放区域外的像素和表示播放区域内播放器的像素; 对比拉伸拉普拉斯图像; 迭代地将霍夫变换应用于对比拉伸拉普拉斯图像以检测线，其中每次迭代导致在下一次迭代之前被去除的一个或多个场线的检测，从而降低下次迭代的复杂度; 识别沿着每个场线的片段; 填充场线中的间隙，其中分析间隙，使得仅填充由于玩家或其他非线对象的遮挡而不可能的那些间隙; 并提供指示表示场线的像素的二进制掩码。

24. 发明申请

WO2008118147A3 METHOD AND APPARATUS FOR DETECTING OBJECTS OF INTEREST IN SOCCER VIDEO BY COLOR SEGMENTATION AND SHAPE ANAYLSIS 审中-公开
标题翻译：通过颜色分割和形状检测在足球视频中感兴趣的对象的方法和设备
公开(公告)号：WO2008118147A3
公开(公告)日：2008-10-02
申请号：PCT/US2007/023317
申请日：2007-11-06
申请人： THOMSON LICENSING , HUANG, Yu , LLACH, Joan , BHAGAVATHY, Sitaram
发明人： HUANG, Yu , LLACH, Joan , BHAGAVATHY, Sitaram
IPC分类号： G06K9/46 , G06K9/00 , G06K9/44
摘要： A method is disclosed for detecting and locating players in soccer video frames without errors caused by artifacts by a shape analysis-based approach to identify the players and the ball from roughly extracted foregrounds obtained by color segmentation and connected component analysis, by performing a Euclidean distance transform to extract skeletons for every foreground blob, by performing a shape analysis to remove false alarms (non-players and non-ball), and then by performing skeleton pruning and a reverse Euclidean distance transform to cut-off the artifacts primarily caused by playing field lines.
摘要翻译：公开了一种用于通过基于形状分析的方法检测和定位足球视频帧中的运动员而没有由伪影引起的误差的方法，以从通过颜色分割获得的粗略提取的前景识别运动员和球并且连接通过执行欧几里得距离变换以提取每个前景斑点的骨架，通过执行形状分析以去除误报（非玩家和非球），然后通过执行骨架修剪和反向欧几里德距离变换以切割 - 关闭主要由场地线造成的文物。

25. 发明申请

WO2008005007A1 ADAPTIVE PIXEL-BASED FILTERING 审中-公开
标题翻译：自适应像素滤波
公开(公告)号：WO2008005007A1
公开(公告)日：2008-01-10
申请号：PCT/US2006/025738
申请日：2006-06-29
申请人： THOMSON LICENSING , BHAGAVATHY, Sitaram , LLACH, Joan
发明人： BHAGAVATHY, Sitaram , LLACH, Joan
IPC分类号： H04N7/26 , H04N5/21
CPC分类号： H04N5/21 , G06T5/002 , G06T5/20 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , H04N19/105 , H04N19/117 , H04N19/162 , H04N19/182 , H04N19/537 , H04N19/593 , H04N19/86
摘要： In an implementation, a pixel is selected from a target digital image. Multiple candidate pixels, from one or more digital images, are evaluated based on values of the multiple candidate pixels. For the selected pixel, a corresponding set of pixels is determined from the multiple candidate pixels based on the evaluations of the multiple candidate pixels and on whether a predetermined threshold number of pixels have been included in the corresponding set. Further for the selected pixel, a substitute value is determined based on the values of the pixels in the corresponding set of pixels. Various implementations described provide adaptive pixel-based spatio-temporal filtering of images or video to reduce film grain or noise. Implementations may achieve an "even" amount of noise reduction at each pixel while preserving as much picture detail as possible by, for example, averaging each pixel with a constant number, N, of temporally and/or spatially correlated pixels.
摘要翻译：在实现中，从目标数字图像中选择像素。基于多个候选像素的值来评估来自一个或多个数字图像的多个候选像素。对于所选择的像素，基于多个候选像素的评估以及相应组中是否包括预定阈值数量的像素，从多个候选像素确定相应的像素集合。此外，对于所选择的像素，基于相应像素集合中的像素的值来确定替代值。所描述的各种实现提供了对图像或视频的自适应基于像素的时空滤波以减少胶片颗粒或噪声。实施方式可以在每个像素处实现“均匀”的噪声降低量，同时通过例如使用恒定数量N对时间和/或空间相关像素对每个像素进行平均，尽可能地保留尽可能多的图像细节。

26. 发明申请

WO2012033963A2 METHODS AND APPARATUS FOR DECODING VIDEO SIGNALS USING MOTION COMPENSATED EXAMPLE-BASED SUPER-RESOLUTION FOR VIDEO COMPRESSION 审中-公开
标题翻译：使用运动补偿的基于示例的超分辨率来解码视频信号的方法和装置用于视频压缩
公开(公告)号：WO2012033963A2
公开(公告)日：2012-03-15
申请号：PCT/US2011/050915
申请日：2011-09-09
申请人： THOMSEN LISCENSING , ZHANG, Dong-Qing , JACOB, Mithun George , BHAGAVATHY, Sitaram
发明人： ZHANG, Dong-Qing , JACOB, Mithun George , BHAGAVATHY, Sitaram
IPC分类号： G06T7/20
CPC分类号： H04N19/85 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/587 , H04N19/61
摘要： Methods and apparatus are provided for decoding video signals using motion compensated example-based super-resolution for video compression. An apparatus includes an example-based super-resolution processor (820) for receiving one or more high resolution replacement patch pictures generated from a static version of an input video sequence having motion, and performing example-based super-resolution to generate a reconstructed version of the static version of the input video sequence from the one or more high resolution replacement patch pictures. The reconstructed version of the static version of the input video sequence includes a plurality of pictures. The apparatus further includes an inverse image warper (830) for receiving motion parameters for the input video sequence, and performing an inverse picture warping process based on the motion parameters to transform one or more of the plurality of pictures to generate a reconstruction of the input video sequence having the motion.
摘要翻译：提供了使用用于视频压缩的基于运动补偿的基于示例的超分辨率来解码视频信号的方法和装置。一种装置包括基于示例的超分辨率处理器（820），用于接收从具有运动的输入视频序列的静态版本生成的一个或多个高分辨率替换贴片图像，以及执行基于示例的超分辨率以生成重建版本的静态版本的输入视频序列从一个或多个高分辨率替换补丁图片。输入视频序列的静态版本的重建版本包括多个图片。该装置还包括用于接收输入视频序列的运动参数的逆图像整形器（830），以及基于运动参数执行逆图像扭曲处理，以转换多个图像中的一个或多个以生成输入的重建具有运动的视频序列。

27. 发明申请

WO2013105946A1 MOTION COMPENSATING TRANSFORMATION FOR VIDEO CODING 审中-公开
标题翻译：运动补偿转换为视频编码
公开(公告)号：WO2013105946A1
公开(公告)日：2013-07-18
申请号：PCT/US2012/020888
申请日：2012-01-11
申请人： THOMSON LICENSING , JACOB, Mithun, George , BHAGAVATHY, Sitaram
发明人： JACOB, Mithun, George , BHAGAVATHY, Sitaram
IPC分类号： H04N7/26 , H04N7/50 , H04N7/36
CPC分类号： H04N19/527 , H04N19/102 , H04N19/137 , H04N19/172 , H04N19/46 , H04N19/503 , H04N19/61
摘要： Various implementations transform a group of pictures to reduce global motion, and then encode the pictures. In a particular implementation, a first picture is transformed to remove at least some motion occurring between the first picture and a second picture. The transformed first picture and one or more parameters indicating the transformation are provided for encoding. In another implementation, metadata indicates the transformation. In yet another implementation, a decoded version of the transformation of a first picture is accessed. One or more decoded parameters indicating the transformation is accessed. The decoded transformation of the first picture is inverse transformed to restore all or part of the motion.
摘要翻译：各种实现转换一组图像以减少全局运动，然后对图像进行编码。在特定实现中，第一图像被变换以去除在第一图像和第二图像之间发生的至少一些运动。提供变换的第一图像和指示变换的一个或多个参数用于编码。在另一个实现中，元数据表示转换。在又一实现中，访问第一图像的变换的解码版本。访问指示转换的一个或多个解码参数。对第一图像的解码变换进行逆变换，以恢复全部或部分运动。

28. 发明申请

WO2011090789A1 METHOD AND APPARATUS FOR VIDEO OBJECT SEGMENTATION 审中-公开
标题翻译：视频对象分割的方法和装置
公开(公告)号：WO2011090789A1
公开(公告)日：2011-07-28
申请号：PCT/US2011/000106
申请日：2011-01-20
申请人： THOMSON LICENSING , BHASKARANAND, Malavika , BHAGAVATHY, Sitaram
发明人： BHASKARANAND, Malavika , BHAGAVATHY, Sitaram
IPC分类号： G06T7/20
CPC分类号： G06T7/2053 , G06T7/194 , G06T7/254 , G06T2207/10016
摘要： Methods and apparatus for video object segmentation are provided, suitable for use in a super-resolution system. The method comprises alignment of frames of a video sequence, pixel alignment to generate initial foreground masks using a similarity metric, consensus filtering to generate an intermediate foreground mask, and refinement of the mask using spatio-temporal information from the video sequence. In various embodiments, the similarity metric is computed using a sum of squared differences approach, a correlation, or a modified normalized correlation metric. Soft thresholding of the similarity metric is also used in one embodiment of the present principles. Weighting factors are also applied to certain critical frames in the consensus filtering stage in one embodiment using the present principles.
摘要翻译：提供视频对象分割的方法和装置，适用于超分辨率系统。该方法包括对视频序列的帧进行对齐，使用相似性度量生成初始前景掩码，生成中间前景掩码的一致滤波，以及使用来自视频序列的时空信息来细化掩码。在各种实施例中，使用平方差法，相关性或修正的归一化相关度量的和来计算相似性度量。相似性度量的软阈值也用于本原理的一个实施例中。使用本原理，在一个实施例中，加权因子也应用于一致性过滤阶段中的某些关键帧。

29. 发明申请

WO2012015460A1 DYNAMIC ADAPTATION OF DISPLAYED VIDEO QUALITY BASED ON VIEWERS' CONTEXT 审中-公开
标题翻译：根据观众的语境动态显示视频品质
公开(公告)号：WO2012015460A1
公开(公告)日：2012-02-02
申请号：PCT/US2011/000283
申请日：2011-02-16
申请人： THOMSON LICENSING , BHAGAVATHY, Sitaram , GOMILA, Cristina
发明人： BHAGAVATHY, Sitaram , GOMILA, Cristina
IPC分类号： H04N7/26 , G06F3/01 , G06T11/00 , H04N5/44 , H04N21/442 , H04N21/422
CPC分类号： H04N21/24 , G06F3/013 , H04N19/102 , H04N19/162 , H04N19/17 , H04N19/33 , H04N21/2343 , H04N21/42202 , H04N21/44218 , H04N21/6587
摘要： A Context-Aware Content-Presentation (CACP) system (100) includes a viewer context feedback (16) for determining the viewer context relative to a display device (12). A content receiving device (18') controls at least one parameter of video content streamed to the display device from a streaming server (20) in accordance with the viewer context. In this way, when the viewer context allows for lower quality video content, the content receiving device can signal the streaming server to reduce the quality of the video content, thereby saving bandwidth.
摘要翻译：上下文感知内容呈现（CACP）系统（100）包括用于相对于显示设备（12）确定观看者上下文的观看者上下文反馈（16）。内容接收装置（18'）根据查看器上下文控制从流服务器（20）流传输到显示设备的视频内容的至少一个参数。以这种方式，当观看者上下文允许较低质量的视频内容时，内容接收装置可以向流服务器发信号以降低视频内容的质量，从而节省带宽。

30. 发明申请

WO2012109434A1 VIDEO QUALITY MONITORING 审中-公开
标题翻译：视频质量监控
公开(公告)号：WO2012109434A1
公开(公告)日：2012-08-16
申请号：PCT/US2012/024464
申请日：2012-02-09
申请人： DIALOGIC CORPORATION , DING, Ran , LIU, Tao , ZOU, Dekun , WANG, Beibei , BHAGAVATHY, Sitaram , NARVEKAR, Niranjan , BLOOM, Jeffrey, A. , CASH, Glenn, L.
发明人： DING, Ran , LIU, Tao , ZOU, Dekun , WANG, Beibei , BHAGAVATHY, Sitaram , NARVEKAR, Niranjan , BLOOM, Jeffrey, A. , CASH, Glenn, L.
IPC分类号： H04N7/12
CPC分类号： H04N17/004
摘要： Systems and methods of perceptual quality monitoring of video information, communications, and entertainment that can estimate the perceptual quality of video with high accuracy, and can be used to produce quality scores that better correlate with subjective quality scores of an end user. The systems and methods of perceptual quality monitoring of video can generate, from an encoded input video bitstream, estimates of one or more quality parameters relating to the video, such as the coding bit rate parameter, the video frame rate parameter, and the packet loss rate parameter, and provide these video quality parameter estimates to a predetermined video quality estimation model. Because the estimates of the video quality parameters are generated from the encoded input video bitstream as it is being received, the systems and methods are suitable for use as QoE monitoring tools.
摘要翻译：视频信息，通信和娱乐的感知质量监控的系统和方法可以高精度地估计视频的感知质量，并且可以用于产生与最终用户的主观质量得分更好相关的质量分数。视频的感知质量监视的系统和方法可以从编码的输入视频比特流中产生与视频相关的一个或多个质量参数的估计，例如编码比特率参数，视频帧速率参数和分组丢失速率参数，并将这些视频质量参数估计提供给预定的视频质量估计模型。因为视频质量参数的估计在编码的输入视频比特流被接收时产生，所以系统和方法适合用作QoE监视工具。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式