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41. 发明申请

US20100232498A1 METHOD AND APPARATUS FOR RATE CONTROL ACCURACY IN VIDEO ENCODING AND DECODING 有权
标题翻译：在视频编码和解码中的速率控制精度的方法和装置
公开(公告)号：US20100232498A1
公开(公告)日：2010-09-16
申请号：US12733947
申请日：2008-09-15
申请人： Yali Liu , Xiaoan Lu , Cristina Gomila , Qian Xu
发明人： Yali Liu , Xiaoan Lu , Cristina Gomila , Qian Xu
IPC分类号： H04N7/26
CPC分类号： H04N19/198 , H04N19/126 , H04N19/149 , H04N19/152 , H04N19/192 , H04N19/196 , H04N19/61
摘要： Methods and apparatus are provided for rate control accuracy in video encoding and decoding. An apparatus includes a video encoder for encoding image data using rate control. The rate control involves estimating a quantization step size and adjusting a rounding offset. The rounding offset is capable of being non-constant during the encoding.
摘要翻译：提供了视频编码和解码中的速率控制精度的方法和装置。一种装置包括用于使用速率控制对图像数据进行编码的视频编码器。速率控制涉及估计量化步长并调整舍入偏移。舍入偏移在编码期间能够不变。

42. 发明申请

US20100165077A1 Multi-View Video Coding Using Scalable Video Coding 有权
标题翻译：使用可扩展视频编码的多视图视频编码
公开(公告)号：US20100165077A1
公开(公告)日：2010-07-01
申请号：US11992721
申请日：2006-10-17
申请人： Peng Yin , Cristina Gomila , Yeping Su
发明人： Peng Yin , Cristina Gomila , Yeping Su
IPC分类号： H04N13/00 , H04N7/12
CPC分类号： H04N19/615 , H04N19/31 , H04N19/33 , H04N19/36 , H04N19/46 , H04N19/597 , H04N19/61 , H04N19/63 , H04N19/91
摘要： There are provided methods and apparatus for stereoscopic video coding using scalable video coding. A scalable video encoder includes an encoder (100) for encoding at least two views corresponding to multi-view video content by, encoding a particular view of the at least two views as a base layer, and encoding each of at least one other view of the at least two views as an enhancement layer using a prediction from a lower layer corresponding to at least one of the particular view and the at least one other view. The at least two views are encoded based on a selection from among at least two of temporal, spatial, and signal to noise ratio scalability techniques.
摘要翻译：提供了使用可分级视频编码的立体视频编码的方法和装置。可分级视频编码器包括编码器（100），用于通过将至少两个视图的特定视图编码为基础层来对与多视点视频内容相对应的至少两个视图进行编码，以及编码至少一个视图的至少一个视图所述至少两个视图作为使用来自对应于所述特定视图和所述至少一个其他视图中的至少一个的较低层的预测的增强层。基于从时间，空间和信噪比可伸缩性技术中的至少两个中的选择来对至少两个视图进行编码。

43. 发明申请

US20100091837A1 Hypothetical Reference Decoder For Scalable Video Coding 有权
标题翻译：用于可缩放视频编码的假设参考解码器
公开(公告)号：US20100091837A1
公开(公告)日：2010-04-15
申请号：US12448510
申请日：2007-12-21
申请人： Lihua Zhu , Jiancong Luo , Peng Yin , Cristina Gomila
发明人： Lihua Zhu , Jiancong Luo , Peng Yin , Cristina Gomila
IPC分类号： H04N7/26
CPC分类号： H04N19/36 , H04N19/30 , H04N19/31 , H04N19/61 , H04N19/70
摘要： The present principles relate to a hypothetical reference decoder (HRD) for a Scalable Video Coding extension for a compression algorithm. One such implementation proposes to modify the H.264/AVC HRD for use with the SVC of AVC. That implementation defines HRD constraints for each interoperability point of SVC. One implementation in particular is described, but other implementations are possible and are contemplated by the present principles. The changes for spatial, temporal, and SNR scalability are shown. There are also changes to the related HRD parameters followed that are shown. The several mentioned implementations provide rules for an HRD for SVC. At least one implementation proposes the SVC-HRD rules as modifications to the AVC-HRD rules. A user may use the proposed SVC-HRD rules to build an SVC-HRD and test a bitstream for SVC compliance.
摘要翻译：本原理涉及用于压缩算法的可缩放视频编码扩展的假设参考解码器（HRD）。一种这样的实现建议修改用于AVC的SVC的H.264 / AVC HRD。该实现定义了SVC每个互操作性点的人力资源开发约束。具体描述了一个实现方式，但是其它实施方式是可能的，并且是本原理的预期。显示了空间，时间和SNR可扩展性的变化。相关的HRD参数也有变化，其后显示。上述几个实现提供了用于SVC的HRD的规则。至少有一个实现提出SVC-HRD规则作为对AVC-HRD规则的修改。用户可以使用所提出的SVC-HRD规则来构建SVC-HRD并测试用于SVC兼容性的比特流。

44. 发明申请

US20100066912A1 BANDING ARTIFACT DETECTION IN DIGITAL VIDEO CONTENT 有权
标题翻译：数字视频内容中的带状文字检测
公开(公告)号：US20100066912A1
公开(公告)日：2010-03-18
申请号：US12448184
申请日：2007-12-19
申请人： Wuttipong Kumwilaisak , Gokce Dane , Cristina Gomila
发明人： Wuttipong Kumwilaisak , Gokce Dane , Cristina Gomila
IPC分类号： H04N5/217 , H04N7/12
CPC分类号： H04N19/86 , G06T7/44 , H04N19/154 , H04N19/17
摘要： A method and system for identifying and determining banding artifacts in digital video content composed of a sequence of moving video pictures includes creating a mask image corresponding to a picture from said sequence of moving video pictures based on global gradient changes to detect potential areas containing banding artifacts. The values of the mask image are scaled thereby making banding artifact detection possible using gradient operators. The banding artifacts are then identified/detected based on the local gradients.
摘要翻译：用于识别和确定由运动视频图像序列组成的数字视频内容中的条带伪影的方法和系统包括基于全局梯度变化从所述运动视频图像序列创建与图像相对应的掩模图像，以检测包含条带伪影的潜在区域。掩模图像的值被缩放，从而可以使用梯度算子来进行带状伪影检测。然后基于局部梯度来识别/检测带状伪影。

45. 发明申请

US20090268981A1 SPATIAL ACTIVITY METRIC AND METHOD FOR EVALUATING THE SAME 审中-公开
标题翻译：空间活动度量及评估方法
公开(公告)号：US20090268981A1
公开(公告)日：2009-10-29
申请号：US12310711
申请日：2007-09-18
申请人： Xiaoan Lu , Jiefu Zhai , Cristina Gomila
发明人： Xiaoan Lu , Jiefu Zhai , Cristina Gomila
IPC分类号： G06K9/40
CPC分类号： G06T7/41
摘要： A spatial activity metric for characterizing an image is established, typically based one of the image variance, image gradient or DCT coefficients. The spatial activity metric is then reduced by the amount of the estimated noise in the image so that upon the spatial activity metric in connection with spatial masking, the likelihood of unmasked distortion caused by the presence of noise, such as film grain will be reduced. The effectiveness of such a spatial activity metric can be determined by determining similarity of the measures made by the spatial activity metric for regions in the image of similar texture and by determining the difference in the measures made by the spatial activity metric for regions of different texture in the image.
摘要翻译：通常基于图像方差，图像梯度或DCT系数之一建立用于表征图像的空间活动度量。然后，空间活动度量减小图像中的估计噪声的量，使得在与空间屏蔽相关的空间活动度量时，由于诸如胶片颗粒的噪声的存在而引起的未屏蔽失真的可能性将减小。这样的空间活动度量的有效性可以通过确定由相似纹理图像中的区域的空间活动度量所做出的度量的相似度，并且通过确定由不同纹理的区域的空间活动度量所做的度量的差异来确定在图像中。

46. 发明申请

US20070104380A1 Method and apparatus for representing image granularity by one or more parameters 有权
标题翻译：用于通过一个或多个参数表示图像粒度的方法和装置
公开(公告)号：US20070104380A1
公开(公告)日：2007-05-10
申请号：US10556833
申请日：2004-03-30
申请人： Cristina Gomila , Alexander Kobilansky
发明人： Cristina Gomila , Alexander Kobilansky
IPC分类号： G06K9/36 , G06K9/40
CPC分类号： H04N19/136 , H04N19/117 , H04N19/46 , H04N19/61
摘要： To characterize film grain, a Film Grain Characterizer (23) receives an incoming information stream (12) and a filtered information stream (24) from which the film grain has been removed. From these streams, the Film Grain Characterizer (23) outputs a message that contains an identity of a model for simulating grain, as well at least one of a set of several parameters, including correlation parameters, intensity-independent parameters and intensity-dependent parameters used by the identified model. An encoder (26, 13) encodes the film grain information for subsequent transmission.
摘要翻译：为了表征胶片颗粒，胶片颗粒表征器（23）接收输入信息流（12）和已经去除胶片颗粒的滤波信息流（24）。从这些流中，胶片颗粒表征器（23）输出包含用于模拟纹理的模型的标识的消息，以及包括相关参数，强度无关参数和强度相关参数的几个参数的集合中的至少一个被识别的模型使用。编码器（26,13）对胶片颗粒信息进行编码，用于随后的传输。

47. 发明申请

US20060256873A1 Method and apparatus for representing image granularity by one or more parameters 有权
标题翻译：用于通过一个或多个参数表示图像粒度的方法和装置
公开(公告)号：US20060256873A1
公开(公告)日：2006-11-16
申请号：US10556834
申请日：2004-03-30
申请人： Cristina Gomila , Alexander Kobilansky
发明人： Cristina Gomila , Alexander Kobilansky
IPC分类号： H04B1/66 , H04N11/02 , H04N11/04 , H04N7/12
CPC分类号： G06T5/002 , G06T5/10 , G06T9/00 , G06T2207/10016 , G06T2207/10024 , G06T2207/20056 , G06T2207/20204 , H04N5/262 , H04N19/61 , H04N19/85
摘要： To simulate film grain in a compressed video signal, a decoder (15, 28) receives a message containing information that contains a set of one or more parameters, each specifying certain attribute associated with the film grain. For example, one of the parameters will specify the model used to simulate the film grain, whereas other parameters each specify a particular factor associated with that model. Upon receipt of the message, the decoder selects the model, and simulates the film grain for addition to the video signal following decompression.
摘要翻译：为了模拟压缩视频信号中的胶片颗粒，解码器（15,28）接收包含包含一组或多个参数的信息的消息，每个参数指定与胶片颗粒相关联的某些属性。例如，其中一个参数将指定用于模拟胶片颗粒的模型，而其他参数均指定与该模型相关联的特定因子。在接收到消息后，解码器选择该模型，并且在解压缩之后模拟用于添加到视频信号的胶片颗粒。

48. 发明授权

US07012958B2 Partition coding method and device 失效
公开(公告)号：US07012958B2
公开(公告)日：2006-03-14
申请号：US10434802
申请日：2003-05-09
申请人： Ferran Marques , Cristina Gomila , Antoni Gasull
发明人： Ferran Marques , Cristina Gomila , Antoni Gasull
IPC分类号： H04B1/66
CPC分类号： G06T9/001 , G06T9/20
摘要： The invention relates to a method of coding segmented pictures, or partitions, divided into homogeneous regions. Said method, called intra-mode coding process, comprises, for each successive partition, the steps of translating the picture of the labels associated to the regions into a description in terms of a contour element chain in which the elements are defined by means of their movements through successive basic cells, tracking inside each successive cell each contour from its initial contour point, previously extracted, to its end by storing chain symbols corresponding both to input, internal and output contour elements of said cell and to priorities between possible multiple outputs elements, and repeating these steps up to the end of each successive contour segment of the concerned partition. The information corresponding in each cell to the initial point of each contour segment and to the associated chain of movements between that initial point and the initial one of the following cell is finally coded.

49. 发明授权

US09774864B2 Methods and apparatus for transform selection in video encoding and decoding 有权
公开(公告)号：US09774864B2
公开(公告)日：2017-09-26
申请号：US13138179
申请日：2009-10-21
申请人： Joel Sole , Peng Yin , Yunfei Zheng , Cristina Gomila
发明人： Joel Sole , Peng Yin , Yunfei Zheng , Cristina Gomila
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/136 , H04N19/196 , H04N19/159 , H04N19/176 , H04N19/119 , H04N19/147 , H04N19/46 , H04N19/122 , H04N19/463 , H04N19/137 , H04N19/70 , H04N19/12 , H04N19/61 , H04N19/86
CPC分类号： H04N19/136 , H04N19/119 , H04N19/12 , H04N19/122 , H04N19/137 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/197 , H04N19/46 , H04N19/463 , H04N19/61 , H04N19/70 , H04N19/86
摘要： There are provided methods and apparatus for transform selection in video coding. An apparatus includes a video encoder for encoding at least a block in a picture by selecting a transform to apply to a residue of the block from a set of two or more available transforms. The transform is selected based on at least one of an inter prediction mode used to predict at least one reference for the block, one or more values corresponding to a motion vector, a value of a residue of one or more previously encoded blocks, a value of prediction data for the block, one or more transform selections of one or more neighboring reconstructed blocks, and a quantization step applied to transform coefficients for the residue of the block.

50. 发明授权

US09516328B2 Method and apparatus for rate control accuracy in video encoding 有权
标题翻译：视频编码速率控制精度的方法和装置
公开(公告)号：US09516328B2
公开(公告)日：2016-12-06
申请号：US12735441
申请日：2009-01-15
申请人： Yali Liu , Qian Xu , Xiaoan Lu , Cristina Gomila
发明人： Yali Liu , Qian Xu , Xiaoan Lu , Cristina Gomila
IPC分类号： H04N7/26 , H04N19/192 , H04N19/176 , H04N19/172 , H04N19/149 , H04N19/61 , H04N19/124
CPC分类号： H04N19/192 , H04N19/124 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/61
摘要： A method and apparatus are provided for rate control accuracy in video encoding. The apparatus includes a video encoder for encoding image data in a single encoding pass using rate control. The rate control involves defining a quantization step size value and a rounding offset value and refining at least the rounding offset value. The image data is encoded responsive to the quantization step size value and the refined rounding offset value.
摘要翻译：提供了一种用于视频编码中的速率控制精度的方法和装置。该装置包括用于使用速率控制在单个编码通道中对图像数据进行编码的视频编码器。速率控制涉及定义量化步长值和舍入偏移值，并且至少精炼舍入偏移值。响应于量化步长值和精化舍入偏移值来编码图像数据。

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