公开(公告)号：US06707946B1

公开(公告)日：2004-03-16

申请号：US09555051

申请日：2000-05-22

申请人： Ferran Marques ,  Cristina Gomila ,  Antoni Gasull

发明人： Ferran Marques ,  Cristina Gomila ,  Antoni Gasull

IPC分类号： G06K946

CPC分类号： G06T9/20

摘要： The invention relates to a method of decoding coded signals corresponding to successive segmented pictures, or partitions, divided into homogeneous regions to which specific labels are respectively associated. The partitions have been previously coded by means of a coding method comprising, for each partition to be coded, the steps of translating the picture of labels into a chain in which the elements are defined by means of their movements through successive basic cells, tracking inside each cell each contour from its initial point to its end by storing symbols corresponding both to the elements of said cell and to priorities between them, and repeating these two steps up to the end of each contour of the partition and coding the information corresponding to the chains of movements. The corresponding decoding method then comprises (A) a forward decoding step, provided for decoding within said chain symbols all contour points that are sure in the decoded partition and detecting local inconsistencies, and (B) a backward decoding step, provided for tracking in a backwards manner the decoded contours and solving said inconsistencies on the basis of marks introduced during the detection of these inconsistencies.

摘要翻译： 本发明涉及一种解码编码信号的方法，所述编码信号对应于被分成特定标签分别相关联的同质区域的连续分段图像或分区。 先前已经通过编码方法对分区进行了编码，该方法包括：对于要编码的每个分区，将标签的图像转换成链中的步骤，其中通过连续的基本单元通过它们的移动定义元素，跟踪内部 每个小区每个轮廓从其初始点到其结束，通过存储对应于所述小区的元素的符号和它们之间的优先级，并且重复这两个步骤直到分区的每个轮廓的结尾，并且对与 运动链。 相应的解码方法包括：（A）正向解码步骤，用于在所述链码内对在解码分区中确定的所有轮廓点进行解码并检测局部不一致性，以及（B）后向解码步骤，用于在 根据检测到这些不一致情况下引入的标记，向后排列解码轮廓并解决所述不一致。

公开(公告)号：US09049443B2

公开(公告)日：2015-06-02

申请号：US13138287

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 ,  H04N19/137 ,  H04N19/196 ,  H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  H04N19/147 ,  H04N19/46 ,  H04N19/122 ,  H04N19/61 ,  H04N19/463 ,  H04N19/136 ,  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.

摘要翻译： 提供了视频编码中的变换选择的方法和装置。 一种装置包括：视频编码器，用于通过从一组两个或多个可用变换中选择适用于块的残差的变换来对图像中的至少块进行编码。 基于用于预测块的至少一个参考的帧间预测模式，对应于运动矢量的一个或多个值，一个或多个先前编码块的残差的值，值 用于块的预测数据，一个或多个相邻重构块的一个或多个变换选择，以及应用于变换块的残差的系数的量化步长。

公开(公告)号：US08542736B2

公开(公告)日：2013-09-24

申请号：US12311036

申请日：2007-10-11

申请人： Shay Har-Noy ,  Oscar Divorra Escoda ,  Peng Yin ,  Cristina Gomila

发明人： Shay Har-Noy ,  Oscar Divorra Escoda ,  Peng Yin ,  Cristina Gomila

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/82 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/137 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

摘要： There are provided methods and apparatus for video coding using prediction data refinement. An apparatus includes an encoder for encoding an image region of a picture. The encoder has a prediction refinement filter for refining at least one of an intra prediction and an inter prediction for the image region. The prediction refinement filter refines the inter prediction for the image region using at least one of previously decoded data and previously encoded data, the previously decoded data and the previously encoded data corresponding to pixel values in neighboring regions with respect to the image region.

公开(公告)号：US20130125155A1

公开(公告)日：2013-05-16

申请号：US13811289

申请日：2011-02-16

申请人： Sitaram Bhagavathy ,  Cristina Gomila

发明人： Sitaram Bhagavathy ,  Cristina Gomila

IPC分类号： H04N21/24

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 system includes a viewer context feedback for determining the viewer context relative to a display device. A content receiving device controls at least one parameter of video content streamed to the display device from a streaming server 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系统包括用于确定相对于显示设备的观看者上下文的观看者上下文反馈。 内容接收装置根据观看者上下文从流式传输服务器控制流向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。

公开(公告)号：US20110075729A1

公开(公告)日：2011-03-31

申请号：US12312646

申请日：2007-12-05

申请人： Gokce Dane ,  Wuttipong Kumwilaisak ,  Cristina Gomila

发明人： Gokce Dane ,  Wuttipong Kumwilaisak ,  Cristina Gomila

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/124 ,  H04N19/15 ,  H04N19/154 ,  H04N19/194 ,  H04N19/61

摘要： A system and method for correcting artifacts present in video frames is disclosed. The system includes a decision module (110) and an artifact correction unit (120). The system receives artifact metrics (112) and artifact maps (122) corresponding to artifacts present in video frames and prioritizes the video frames to be corrected by considering the type and severity of the artifacts and the content of the video frames (113). Subsequent to prioritizing the video frames, the system corrects artifacts of selected frames by adjusting compressed domain parameters (126), such as quantization parameters and mode decisions. An encoder (130) compresses the video frames according to the adjusted compressed domain parameter to automatically provide a video stream with a lower incidence and severity of artifacts.

摘要翻译： 公开了一种用于校正视频帧中存在的伪像的系统和方法。 该系统包括判定模块（110）和伪影校正单元（120）。 该系统接收对应于视频帧中存在的伪像的伪像度量（112）和伪影图（122），并且通过考虑伪影的类型和严重性以及视频帧的内容（113）来对待修正的视频帧进行优先级排序。 在对视频帧进行优先排序之后，系统通过调整诸如量化参数和模式决定的压缩域参数（126）来校正所选帧的伪影。 编码器（130）根据经调整的压缩域参数对视频帧进行压缩，以自动提供具有较低的伪影入射和严重性的视频流。

公开(公告)号：US20100290524A1

公开(公告)日：2010-11-18

申请号：US12800263

申请日：2010-05-12

申请人： Xiaoan Lu ,  Qian Xu ,  Cristina Gomila

发明人： Xiaoan Lu ,  Qian Xu ,  Cristina Gomila

IPC分类号： H04N7/32

CPC分类号： H04N19/00157 ,  H04N19/124 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/61

摘要： The present principles provides a method and apparatus for jointly adjusting the rounding offset and the quantization step size on a macroblock level to improve the perceptual quality of the fine details of the encoded image. In one implementation, the content of the pictures is analyzed and the smooth regions are identified. A quantization step size value for the picture is initially defined and a rounding offset is adaptively assigned to each macroblock based on the content characteristics. The quantization step size is then calculated for the a particular macroblock according to another content characteristic of the macroblock such that the encoding of the particular macroblock is performed in response to the calculated quantization step size and the rounding offset value of the first block.

摘要翻译： 本发明提供了一种用于在宏块级别上联合调整舍入偏移量和量化步长的方法和装置，以提高编码图像的精细细节的感知质量。 在一个实现中，分析图像的内容并且识别平滑区域。 最初定义图像的量化步长值，并且基于内容特征对每个宏块自适应地分配舍入偏移。 然后根据宏块的另一内容特性，针对特定宏块计算量化步长，使得响应于计算出的量化步长和第一块的舍入偏移值执行特定宏块的编码。

公开(公告)号：US07742655B2

公开(公告)日：2010-06-22

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： G06K9/40 ,  G06K9/36

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：US07738722B2

公开(公告)日：2010-06-15

申请号：US11252177

申请日：2005-10-17

申请人： Cristina Gomila ,  Joan Lllach ,  Jeffrey Allen Cooper

发明人： Cristina Gomila ,  Joan Lllach ,  Jeffrey Allen Cooper

IPC分类号： G06K9/40 ,  G06K9/36 ,  G06K9/00 ,  H04N5/217 ,  H04N5/228 ,  H04N1/00 ,  H04N1/413 ,  H04N1/41 ,  H04N1/32

CPC分类号： G06T5/002 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N5/21 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/46 ,  H04N19/86

摘要： Reduction in the blockiness of a simulated film grain block can be achieved either by the use of adaptive downscaling or adaptive deblocking filtering to adjust the intensity of the pixels at the block edge in accordance with at least one film grain block parameter, such as film grain size, intensity and texture. Performing such adaptive downscaling or adaptive deblocking filtering achieves improved performance at lower computational cost by avoiding modification of film grain block pixels in lesser affected areas.

摘要翻译： 可以通过使用自适应缩小或自适应去块滤波来根据至少一个胶片颗粒块参数（例如胶片颗粒）调整块边缘处的像素的强度来实现模拟胶片颗粒块的阻挡性的减小 尺寸，强度和质感。 执行这种自适应缩小或自适应去块滤波通过避免在较小影响区域中修改胶片颗粒块像素，以较低的计算成本实现了改进的性能。

公开(公告)号：US07693338B2

公开(公告)日：2010-04-06

申请号：US10541762

申请日：2003-12-30

申请人： Cristina Gomila

发明人： Cristina Gomila

IPC分类号： G06K9/36

CPC分类号： H04N19/895

摘要： Concealment of macroblocks in a rectangular array advantageously occurs by concealing successive rows of macroblocks by progressing in the direction of the larger side of the array. By performing concealment in this manner, information from the concealment of a preceding row or column propagates in a way that facilitates the prediction of contours either in the vertical, the horizontal or the diagonal direction horizontal/diagonal direction, thereby improving the quality of concealment.

摘要翻译： 矩形阵列中的宏块的隐藏有利地通过在阵列的较大侧的方向上进行隐藏而连续的宏块行隐藏。 通过以这种方式执行隐藏，来自前一行或列的隐藏的信息以促进垂直，水平或对角线方向水平/对角线方向上的轮廓预测的方式传播，从而提高隐藏的质量。

公开(公告)号：US20100074340A1

公开(公告)日：2010-03-25

申请号：US12448748

申请日：2008-01-07

申请人： Jiancong Luo ,  Li Hua Zhu ,  Peng Yin ,  Cristina Gomila

发明人： Jiancong Luo ,  Li Hua Zhu ,  Peng Yin ,  Cristina Gomila

IPC分类号： H04N11/02

CPC分类号： H04N21/44016 ,  H04N21/23424 ,  H04N21/2662 ,  H04N21/44004 ,  H04N21/440218 ,  H04N21/6336 ,  H04N21/8451

摘要： There are provided methods and apparatus for video stream splicing. An apparatus includes a spliced video stream generator for creating a spliced video stream using hypothetical reference decoder parameters. Another apparatus includes a spliced video stream generator for creating a spliced video stream that prevents decoder buffer overflow and underflow conditions relating to the spliced video stream by modifying standard values of at least one hypothetical reference decoder related high level syntax element.

摘要翻译： 提供了用于视频流拼接的方法和装置。 一种装置包括拼接视频流发生器，用于使用假设参考解码器参数创建拼接视频流。 另一种装置包括拼接的视频流发生器，用于通过修改至少一个假设参考解码器相关的高级语法元素的标准值来创建拼接视频流，以防止与拼接视频流有关的解码器缓冲器溢出和下溢条件。