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    Low-Complexity Film Grain Simulation Technique
    44.
    发明申请
    Low-Complexity Film Grain Simulation Technique 有权
    低复杂度电影粒度模拟技术

    公开(公告)号：US20080152250A1

    公开(公告)日：2008-06-26

    申请号：US11667846

    申请日：2005-09-26

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

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

    IPC分类号： G06K9/40

    CPC分类号： G06T5/10 ,  G06T5/002 ,  G06T2207/10016 ,  G06T2207/20052 ,  G06T2207/20204 ,  H04N19/46 ,  H04N19/467 ,  H04N19/85

    摘要： The simulation of film grain in a video image occurs by first creating a block (i.e., a matrix array) of transformed coefficients for a set of cut frequencies fHL, fVL, fHH and fVH associated with a desired grain pattern. (The cut frequencies fHL, fVL, fHH and fVH represent cut-off frequencies, in two dimensions, of a filter that characterizes the desired film grain pattern). The block of transformed coefficients undergoes an inverse transform to yield a bit-accurate film grain sample and the bit accurate sample undergoes scaling to enable blending with a video signal to simulate film grain in the signal.

    摘要翻译： 视频图像中的胶片颗粒的模拟是通过首先为一组切割频率f LF，V V L和V L而产生变换系数的块（即，矩阵阵列） ，f H HH和f V H H N，与期望的颗粒图案相关联。 （截止频率f L HL，f VL，f HH和f H V H表示截止频率，在 表示所需胶片颗粒图案的过滤器的两个尺寸）。 变换后的系数块进行逆变换以产生位精确的胶片颗粒样品，并且比特精确的样本进行缩放以使得能够与视频信号混合以模拟信号中的胶片颗粒。

    Technique for defining concealment order to minimize error propagation
    47.
    发明申请
    Technique for defining concealment order to minimize error propagation 有权
    用于定义隐藏顺序以最小化错误传播的技术

    公开(公告)号：US20060288264A1

    公开(公告)日：2006-12-21

    申请号：US10541762

    申请日：2003-12-30

    申请人： Cristina Gomila

    发明人： Cristina Gomila

    IPC分类号： H04L1/00 ,  H03M13/00

    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。

    Spatial error concealment based on the intra-prediction modes transmitted in a coded stream
    48.
    发明申请
    Spatial error concealment based on the intra-prediction modes transmitted in a coded stream 审中-公开
    基于在编码流中发送的帧内预测模式的空间误差隐藏

    公开(公告)号：US20060146940A1

    公开(公告)日：2006-07-06

    申请号：US10541778

    申请日：2003-07-08

    申请人： Cristina Gomila ,  Peng Yin

    发明人： Cristina Gomila ,  Peng Yin

    IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/04 ,  H04N11/02

    CPC分类号： H04N19/895 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/593

    摘要： Spatial concealment of errors in an intra picture comprised of a stream of macroblocks is achieved by predicting the missing data in a macroblock based on an intra prediction mode specified in neighboring block. In practice, when macroblocks within a stream are coded by a block based coding technique, such as coding technique specified in the H.264 ISO/ITU standard, a macroblock can be predicted for coding purpose based on neighboring intra prediction modes specified by the coding technique.

    摘要翻译： 通过基于在相邻块中指定的帧内预测模式来预测宏块中的丢失数据来实现由宏块流组成的帧内图像中的错误的空间隐藏。 在实践中，当通过基于块的编码技术（例如H.264 ISO / ITU标准中规定的编码技术）对流内的宏块进行编码时，可以基于由编码指定的相邻帧内预测模式来预测宏块用于编码目的 技术。

    Partition decoding method and device
    49.
    发明授权
    Partition decoding method and device 失效
    分区解码方法和设备

    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。