公开(公告)号：US07852409B2

公开(公告)日：2010-12-14

申请号：US11273067

申请日：2005-11-14

申请人： Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper ,  Jill MacDonald Boyce

发明人： Cristina Gomila ,  Joan Llach ,  Jeffrey Allen Cooper ,  Jill MacDonald Boyce

IPC分类号： G06F7/58 ,  H04N9/74

CPC分类号： G06F7/582 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85

摘要： There are provided methods and apparatus for bit-accurate seed initialization for pseudo-random number generators used in a video system. A method includes the steps of creating (205) a look-up table of PRNG seeds, and initializing (210) one of the PRNG seeds from the look-up table for a picture by accessing the look-up table using a value corresponding to an order of the picture.

摘要翻译： 提供了用于在视频系统中使用的伪随机数发生器的比特精确种子初始化的方法和装置。 一种方法包括以下步骤：创建（205）PRNG种子的查找表，以及通过使用对应于...的值访问查找表，从图形的查找表中初始化（210）PRNG种子之一 照片的顺序。

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。

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。

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。

公开(公告)号：US20070117291A1

公开(公告)日：2007-05-24

申请号：US10581151

申请日：2004-12-01

申请人： Jeffrey Cooper ,  Jill Boyce ,  Alexandros Tourapis ,  Cristina Gomila ,  Joan Llach ,  Peng Yin

发明人： Jeffrey Cooper ,  Jill Boyce ,  Alexandros Tourapis ,  Cristina Gomila ,  Joan Llach ,  Peng Yin

IPC分类号： H01L33/00 ,  H01L21/84

CPC分类号： G06T11/00 ,  G06T5/002 ,  G06T2207/20021 ,  G06T2207/20204 ,  H04N5/262 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/85

摘要： Individual pixels in an image block undergo blending with film grain from a film grain block randomly selected from among a pool of previously established film grain blocks in accordance with a luma characteristic of the image block. Prior to blending, the selected film grain block undergoes deblocking by a deblocking filter (28). Following blending, a clipper clips the individual pixels prior to display. The pool of film grain blocks is created by scaling a set of film grain patterns in accordance with at least one parameter of a film grain information message that accompanies the image block.

摘要翻译： 根据图像块的亮度特性，图像块中的各个像素经历与从先前建立的胶片颗粒块池中随机选择的胶片颗粒块的胶片颗粒混合。 在混合之前，所选择的胶片颗粒块通过去块过滤器（28）进行解块。 混合之后，剪辑器会在显示之前剪辑各个像素。 通过根据伴随图像块的胶片颗粒信息消息的至少一个参数缩放一组胶片颗粒图案来创建胶片颗粒块的池。

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。

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。

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.

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.

公开(公告)号：US09510016B2

公开(公告)日：2016-11-29

申请号：US12737132

申请日：2009-06-11

申请人： Cristina Gomila ,  Oscar Divorra Escoda ,  Peng Yin ,  Joel Sole

发明人： Cristina Gomila ,  Oscar Divorra Escoda ,  Peng Yin ,  Joel Sole

IPC分类号： H04N7/12 ,  H04N19/59 ,  H04N19/102 ,  H04N19/61 ,  H04N19/186 ,  H04N19/157 ,  H04N19/184

CPC分类号： H04N19/59 ,  H04N19/102 ,  H04N19/132 ,  H04N19/157 ,  H04N19/184 ,  H04N19/186 ,  H04N19/61

摘要： Methods and apparatus are provided for video coding and decoding with reduced bit-depth update mode and reduced chroma sampling update mode. An apparatus includes an encoder for encoding at least a portion of a picture using at least one of a reduced bit-depth update mode and a reduced chroma sampling update mode that respectively reduces at least one of a bit-depth and a chroma sampling of a residue signal corresponding to the portion.

摘要翻译： 为减少位深度更新模式和降低色度采样更新模式，提供视频编码和解码方法和装置。 一种装置包括：编码器，用于使用降低的位深度更新模式和降低的色度采样更新模式中的至少一个来对图像的至少一部分进行编码，所述模式分别减少比特深度和色度采样中的至少一个 残留信号对应于该部分。