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31. 发明申请

US20090175330A1 Method and apparatus for adapting a default encoding of a digital video signal during a scene change period 有权
标题翻译：用于在场景变化期间适应数字视频信号的默认编码的方法和装置
公开(公告)号：US20090175330A1
公开(公告)日：2009-07-09
申请号：US12309336
申请日：2006-07-17
申请人： Zhi Bo Chen , Xiao Dong Gu , Li Hua Zhu , Qu Qing Chen
发明人： Zhi Bo Chen , Xiao Dong Gu , Li Hua Zhu , Qu Qing Chen
IPC分类号： H04N7/26
CPC分类号： H04N19/577 , H04N19/115 , H04N19/142 , H04N19/152 , H04N19/17 , H04N19/179 , H04N19/61 , H04N19/87
摘要： The frame following a scene cut is usually coded as an I picture. In CBR encoding, the encoder will try to keep the bit rate constant, which will often cause serious picture quality degradation at scene changes. In VBR encoding, more bits will be allocated to the first frame of the new scene and the bit rate will increase significantly for a short time. Therefore subsequent frames must be coded in ‘skipped’ mode, which will often cause jerk artifacts. According to the invention, in each frame belonging to a scene change period, areas are determined that have different human attention levels. In the frames (n−1, n−2, n−3) located prior to the first new scene frame, to the areas having a lower attention level less bits are assigned than in the default encoding, and in the frames (n, n+1, n+2) located at and after the scene cut the thus saved bits are additionally assigned to the areas having a higher attention level.
摘要翻译：场景切割后的帧通常被编码为I图像。在CBR编码中，编码器将尝试保持比特率恒定，这将导致场景变化导致严重的图像质量下降。在VBR编码中，更多位将被分配给新场景的第一帧，并且比特率将在短时间内显着增加。因此，后续帧必须以“跳过”模式进行编码，这通常会引起抖动伪像。根据本发明，在属于场景变化期间的每个帧中，确定具有不同人的注意力水平的区域。在位于第一新场景帧之前的帧（n-1，n-2，n-3）中，对于具有较低注意力级别的区域，比在默认编码中分配较少的位，并且在帧（n， n + 1，n + 2）被分配给具有较高关注度的区域。

32. 发明申请

US20120242679A1 RENDERING METHOD 有权
标题翻译：渲染方法
公开(公告)号：US20120242679A1
公开(公告)日：2012-09-27
申请号：US13513608
申请日：2009-12-04
申请人： Jun Teng , Li Xin Luo , Zhi Bo Chen
发明人： Jun Teng , Li Xin Luo , Zhi Bo Chen
IPC分类号： G09G5/02
CPC分类号： G09G5/02 , G06T7/0002 , G06T11/00 , G06T2207/30168 , G09G1/28 , G09G3/2003 , G09G3/3607
摘要： As to enhance the rendering while minimizing needed computation time, the method comprises the steps of determining noise information, said noise information being representative of noise level estimated for at least a part of said image; the noise information being determined for the achromatic component of the image; sampling said part of the image according to said noise information; and rendering said at least a part of the image according to said sampling.
摘要翻译：为了在最小化所需的计算时间的同时增强渲染，该方法包括以下步骤：确定噪声信息，所述噪声信息代表为所述图像的至少一部分估计的噪声水平; 为图像的消色差分量确定噪声信息; 根据所述噪声信息对图像的所述部分进行采样; 以及根据所述采样呈现图像的至少一部分。

33. 发明授权

US09401124B2 Rendering method 有权
标题翻译：呈现方法
公开(公告)号：US09401124B2
公开(公告)日：2016-07-26
申请号：US13513608
申请日：2009-12-04
申请人： Jun Teng , Li Xin Luo , Zhi Bo Chen
发明人： Jun Teng , Li Xin Luo , Zhi Bo Chen
IPC分类号： G09G5/02 , G09G1/28 , G09G3/20 , G09G3/36
CPC分类号： G09G5/02 , G06T7/0002 , G06T11/00 , G06T2207/30168 , G09G1/28 , G09G3/2003 , G09G3/3607
摘要： As to enhance the rendering while minimizing needed computation time, the method comprises the steps of determining noise information, said noise information being representative of noise level estimated for at least a part of said image; the noise information being determined for the achromatic component of the image; sampling said part of the image according to said noise information; and rendering said at least a part of the image according to said sampling.
摘要翻译：为了在最小化所需的计算时间的同时增强渲染，该方法包括以下步骤：确定噪声信息，所述噪声信息代表为所述图像的至少一部分估计的噪声水平; 为图像的消色差分量确定噪声信息; 根据所述噪声信息对图像的所述部分进行采样; 以及根据所述采样呈现图像的至少一部分。

34. 发明授权

US09214042B2 Method for encoding normals of a 3D mesh model, method for decoding normals of a 3D mesh model, encoder and decoder 有权
标题翻译：用于编码3D网格模型的法线的方法，用于解码3D网格模型的法线，编码器和解码器的方法
公开(公告)号：US09214042B2
公开(公告)日：2015-12-15
申请号：US13575228
申请日：2010-01-25
申请人： Kang Ying Cai , Wei Wei Li , Zhi Bo Chen
发明人： Kang Ying Cai , Wei Wei Li , Zhi Bo Chen
IPC分类号： G06T17/00 , G06T17/20 , G06T9/00 , G06T15/50
CPC分类号： G06T9/001 , G06T9/004 , G06T9/008 , G06T15/50 , G06T17/20 , G06T17/205
摘要： A method for encoding vertex orientations, also known as normal components, of a 3D mesh model comprises a first clustering of the normal components, determining for each of the first clusters a sphere sector to which most of its elements belong, mapping normal components to a predefined sector, re-clustering the normal components in the predefined sector into second clusters, determining predictors for the second clusters and encoding a normal component by its residual, a reference to its predictor and data indicating which of said mirror mapping operations were performed. A sphere sector is obtained by dividing a sphere into m equal spherical segments and dividing each of said spherical segments into n equal sectors. The first clustering for the sector mapping and the second clustering for predictive coding result in an improved compression ratio.
摘要翻译：用于编码3D网格模型的顶点取向（也称为正常分量）的方法包括正常分量的第一聚类，为每个第一簇确定其大多数元素所属的球面扇区，将正常分量映射到将预定义扇区中的正常分量重新聚类成第二簇，确定第二簇的预测变量并通过其残差对正态分量进行编码，对其预测器的引用以及指示执行所述镜像映射操作的数据。通过将球划分成m个相等的球形段并将每个所述球形段划分成n个相等的扇区来获得球面扇形。用于扇区映射的第一聚类和用于预测编码的第二聚类导致改进的压缩比。

35. 发明授权

US08831102B2 Method for predicting a lost or damaged block of an enhanced spatial layer frame and SVC-decoder adapted therefore 有权
标题翻译：因此，用于预测增强空间层帧和SVC解码器的丢失或损坏块的方法
公开(公告)号：US08831102B2
公开(公告)日：2014-09-09
申请号：US12460960
申请日：2009-07-27
申请人： Zhi Jin Xia , Zhi Bo Chen , Yu Wen Wu
发明人： Zhi Jin Xia , Zhi Bo Chen , Yu Wen Wu
IPC分类号： H04N7/12 , H04N7/50 , H04N7/26 , H04N7/68
CPC分类号： H04N19/00781 , H04N19/176 , H04N19/33 , H04N19/61 , H04N19/80 , H04N19/86 , H04N19/895
摘要： The invention is related to prediction of a lost or damaged block of an enhanced spatial layer frame.A method for predicting a lost or damaged block of an enhanced spatial layer frame comprises the steps of determining an adjuvant frame in the enhanced spatial layer by help of reference information from a lower spatial layer frame corresponding said enhanced spatial layer frame, generating an information reduced block by help of said adjuvant frame and predicting the lost or damaged block by help of the information reduced block.The reference information of the corresponding lower spatial layer frame can be decoded independently from any lower spatial layer reference frame and the adjuvant enhanced spatial layer frame is already decoded. Thus, the computational effort is reduced. By generation of the information reduced block the prediction is made smoother which makes it less vivid and therefore less salient to a user.
摘要翻译：本发明涉及增强空间层框架的丢失或损坏块的预测。一种用于预测增强空间层帧的丢失或损坏的块的方法包括以下步骤：借助来自对应于所述增强空间层帧的较低空间层帧的参考信息来确定增强空间层中的辅助帧，生成减少的信息通过所述辅助帧的帮助来阻止并且通过信息减少块的帮助来预测丢失或损坏的块。相应的较低空间层帧的参考信息可以独立于任何较低空间层参考帧进行解码，并且辅助增强空间层帧已被解码。因此，减少了计算量。通过生成信息减少块，使预测变得更平滑，这使得它不那么生动，因此对于用户来说不那么显着。

36. 发明申请

US20130235214A1 METHOD AND APPARATUS FOR MEASURING QUALITY OF VIDEO BASED ON FRAME LOSS PATTERN 有权
标题翻译：用于测量基于帧丢失模式的视频质量的方法和装置
公开(公告)号：US20130235214A1
公开(公告)日：2013-09-12
申请号：US13989130
申请日：2010-11-30
申请人： Xiao Dong Gu , De Bing Liu , Zhi Bo Chen
发明人： Xiao Dong Gu , De Bing Liu , Zhi Bo Chen
IPC分类号： H04N17/00
CPC分类号： H04N17/00 , H04N17/004
摘要： A method and apparatus for measuring the quality of a video is provided. The method comprises: generating a frame loss pattern of the video by indicating whether each frame in the video is lost or successfully transmitted; and evaluating the quality of the video as a function of the generated t came loss pattern.
摘要翻译：提供了一种用于测量视频质量的方法和装置。该方法包括：通过指示视频中的每个帧是丢失还是成功发送来产生视频的帧丢失模式; 并且根据所产生的损失模式来评估视频的质量。

37. 发明申请

US20130070106A1 METHOD FOR DETERMINING A QUALITY MEASURE FOR A VIDEO IMAGE AND APPARATUS FOR DETERMINING A QUALITY MEASURE FOR A VIDEO IMAGE 有权
标题翻译：用于确定视频图像的质量测量的方法和用于确定视频图像的质量度量的装置
公开(公告)号：US20130070106A1
公开(公告)日：2013-03-21
申请号：US13320553
申请日：2010-11-18
申请人： De Bing Liu , Zhi Bo Chen , Xiao Dong Gu
发明人： De Bing Liu , Zhi Bo Chen , Xiao Dong Gu
IPC分类号： H04N17/00
CPC分类号： H04N17/004
摘要： Accurately estimating the image quality of video is still difficult, especially when there is no reference video available. A method for determining a quality measure for a video image comprises selecting a measuring point, such as a MB, determining a context area around the measuring point, calculating a variance of pixel values in the context area, calculating a variance of pixel values in the measuring point, calculating a relation between the two variances of pixel values, and averaging said relations for a plurality of measuring points, wherein a quality measure for a video image is obtained.
摘要翻译：准确估计视频的图像质量仍然很困难，特别是当没有可用的参考视频时。一种用于确定视频图像的质量测量的方法包括：选择测量点，诸如MB，确定测量点周围的上下文区域，计算上下文区域中的像素值的方差，计算像素值的方差测量点，计算像素值的两个方差之间的关系，以及平均用于多个测量点的所述关系，其中获得视频图像的质量测量。

38. 发明申请

US20110317768A1 METHOD AND APPARATUS FOR DETERMINING BLUR IN AN IMAGE 有权
标题翻译：用于确定图像中的图像的方法和装置
公开(公告)号：US20110317768A1
公开(公告)日：2011-12-29
申请号：US13138600
申请日：2010-02-26
申请人： De Bing Liu , Zhi Bo Chen , Xiao Dong Gu , Feng Xu
发明人： De Bing Liu , Zhi Bo Chen , Xiao Dong Gu , Feng Xu
IPC分类号： H04N7/26 , G06T5/00 , G06K9/40 , H04N7/68
CPC分类号： H04N19/14 , G06T7/0002 , G06T2207/30168 , H04N19/174 , H04N19/176 , H04N19/44 , H04N19/61 , H04N19/86
摘要： Blur is one of the most important features related to video quality. Accurate estimating the blur level of a video is a great help to accurately evaluate the video quality. An improved method is provided for estimating the blur level of videos that are compressed by a block based codec, such as H.264/AVC, MPEG2, etc. According to the invention, local blur detection is based on macroblock (MB) edges, a content dependent weighting scheme is employed to decrease the influence from texture and when detecting local blur, the spreading of detection will stop at local minimum and maximum luminance positions.
摘要翻译：模糊是与视频质量相关的最重要的功能之一。准确估计视频的模糊级别对于准确评估视频质量是一个很大的帮助。提供了一种改进的方法来估计由诸如H.264 / AVC，MPEG2等的基于块的编解码器压缩的视频的模糊级别。根据本发明，局部模糊检测基于宏块（MB）边缘，采用内容相关加权方案来减小纹理的影响，并且当检测局部模糊时，检测的扩展将在局部最小和最大亮度位置停止。

39. 发明授权

US08949092B2 Method and apparatus for encoding a mesh model, encoded mesh model, and method and apparatus for decoding a mesh model 有权
标题翻译：用于编码网格模型，编码网格模型以及用于解码网格模型的方法和装置的方法和装置
公开(公告)号：US08949092B2
公开(公告)日：2015-02-03
申请号：US13501662
申请日：2009-10-15
申请人： Kang Ying Cai , Yu Jin , Zhi Bo Chen
发明人： Kang Ying Cai , Yu Jin , Zhi Bo Chen
IPC分类号： G06G7/48 , H04W16/20 , G06F17/50 , G06T17/20 , G06F17/10 , H04W28/06 , H04W84/18 , H04W88/04
CPC分类号： H04W16/20 , G06F17/10 , G06F17/5018 , G06T9/001 , G06T9/40 , G06T17/20 , H04W28/06 , H04W84/18 , H04W88/04
摘要： For most large 3D engineering models, the instance positions of repeating instances of connected components show significant multiple spatial aggregation. The invention uses several KD-trees, each for one cluster of points which are spatially aggregated. The multiple KD-trees generate a relatively short data stream, and thus improve the total compression ratio. A method for encoding points of a 3D mesh model comprises steps of determining that the mesh model comprises repeating instances of a connected component, and determining for each repeating instance at least one reference point, clustering the reference points of the repeating instances into one or more clusters, and encoding the clustered reference points using KD-tree coding, wherein for each cluster a separate KD-tree is generated.
摘要翻译：对于大多数大型3D工程模型，连接组件的重复实例的实例位置显示出显着的多个空间聚合。本发明使用几个KD树，每个KD树针对空间聚集的一个点簇。多个KD树生成相对较短的数据流，从而提高总压缩比。用于对3D网格模型的点进行编码的方法包括以下步骤：确定所述网格模型包括连续分量的重复实例，以及针对每个重复实例确定至少一个参考点，将所述重复实例的参考点聚类成一个或多个群集，并使用KD树编码对聚类参考点进行编码，其中对于每个簇，生成单独的KD树。

40. 发明申请

US20130173225A1 METHOD FOR SAMPLING MESH MODELS AND APPARATUS FOR SAMPLING MESH MODELS 审中-公开
标题翻译：采样网格模型的方法和采样MESH模型的设备
公开(公告)号：US20130173225A1
公开(公告)日：2013-07-04
申请号：US13503712
申请日：2011-04-29
申请人： Kang Ying Cai , Wei Wei Li , Zhi Bo Chen
发明人： Kang Ying Cai , Wei Wei Li , Zhi Bo Chen
IPC分类号： G06F17/50
CPC分类号： G06F17/50 , G06F17/5018 , G06T9/001
摘要： Common 2D or 3D mesh models comprise redundancy in the form of symmetries, such as repetitive structures. For complexity reduction, the redundant structures must be detected. An improved method for sampling mesh models comprises sampling the model (710) using an initial sampling step size, detecting (720) a representative of a repeating structure, instances of the repeating structure and a remainder of the model, and sampling (780) the remainder and the representative using a first reduced sampling level according to a first reduced sampling step to size. The method comprises detecting (730) a size of said representative of a repeating structure, a size of the instances of the repeating structure and a size of said remainder, and calculating (740) the first reduced sampling step size based on the size of the instance and the total size of the model. The method can be repeated recursively.
摘要翻译：常见的2D或3D网格模型包括对称形式的冗余，例如重复结构。为了降低复杂度，必须检测冗余结构。用于采样网格模型的改进方法包括使用初始采样步长对模型（710）进行采样，检测（720）重复结构的代表，重复结构的实例和模型的剩余部分，以及采样（780）并且所述代表使用根据第一缩减采样步骤来缩小尺寸的第一降低抽样水平。该方法包括检测（730）所述代表重复结构的大小，重复结构的实例的大小和所述剩余部分的大小，以及基于所述重复结构的大小来计算（740）第一缩减采样步长实例和模型的总大小。该方法可以递归地重复。

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