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1. 发明申请

US20070058723A1 Adaptively adjusted slice width selection 审中-公开
标题翻译：自适应调整切片宽度选择
公开(公告)号：US20070058723A1
公开(公告)日：2007-03-15
申请号：US11226026
申请日：2005-09-14
申请人： Ashwin Chandramouly , Kumar Lava , Raghavan Subramaniyan
发明人： Ashwin Chandramouly , Kumar Lava , Raghavan Subramaniyan
IPC分类号： H04N11/04 , H04N7/12
CPC分类号： H04N19/188 , H04N19/157 , H04N19/174 , H04N19/61
摘要： A video encoder (300) and method (400) for encoding video content that performs providing (402) transform coefficients and associated side information for macroblocks forming part of a frame of a video stream. Next the method processes (403) the transform coefficients and associated side information to obtain entropy coded information for the macroblocks. Slices are formed (404) from the entropy coded information, the slices having slice widths that are adaptively adjusted based upon the non-uniformity of video content of the frame.
摘要翻译：用于编码对构成视频流的帧的一部分的宏块执行提供（402）变换系数和相关联的侧信息的视频内容的视频编码器（300）和方法（400）。接下来，该方法处理（403）变换系数和相关联的侧信息以获得宏块的熵编码信息。根据熵编码信息形成切片（404），切片具有根据帧的视频内容的不均匀性自适应地调整的切片宽度。

2. 发明申请

US20060140490A1 Method and apparatus for controlling access to image data 审中-公开
标题翻译：用于控制对图像数据的访问的方法和装置
公开(公告)号：US20060140490A1
公开(公告)日：2006-06-29
申请号：US11025268
申请日：2004-12-29
申请人： Anantharaman Balasubramanian , Ashwin Chandramouly
发明人： Anantharaman Balasubramanian , Ashwin Chandramouly
IPC分类号： G06K9/36
CPC分类号： H04N19/88 , H04N19/176 , H04N19/196 , H04N19/48 , H04N19/513 , H04N19/60 , H04N19/61
摘要： Method and apparatus for controlling access to image data is described. In one example, a set of samples associated with said image data is frequency translated to produce coefficients. The coefficients are quantized. At least a first portion of the coefficients are shifted using first key data. At least a second portion of the coefficients are shuffled using scrambling table data. The coefficients are entropy coded to produce encoded image data. In this manner, security is provided for the image data without impacting compression efficiency. The coefficients may be organized into a plurality of levels. For each coefficient in the first portion of coefficients, a level of the plurality of levels for the coefficient is identified, and a magnitude of the coefficient is adjusted using a key associated with the identified level such that the coefficient remains in the identified level (i.e., intra-level shifted).
摘要翻译：描述了用于控制图像数据访问的方法和装置。在一个示例中，与所述图像数据相关联的一组样本被频率转换以产生系数。系数被量化。使用第一密钥数据来移位系数的至少第一部分。系数的至少第二部分使用加扰表数据进行混洗。系数被熵编码以产生编码图像数据。以这种方式，为图像数据提供安全性而不影响压缩效率。系数可以被组织成多个级别。对于系数的第一部分中的每个系数，识别用于系数的多个级别的级别，并且使用与所识别的级别相关联的密钥来调整系数的大小，使得系数保持在所识别的级别（即，内部移位）。

3. 发明申请

US20060203916A1 Method, article of manufacture, and apparatus for high quality, fast intra coding usable for creating digital video content 有权
标题翻译：方法，制品，以及可用于创建数字视频内容的高质量，快速帧内编码的装置
公开(公告)号：US20060203916A1
公开(公告)日：2006-09-14
申请号：US11078937
申请日：2005-03-11
申请人： Ashwin Chandramouly , Shailesh Ramamurthy
发明人： Ashwin Chandramouly , Shailesh Ramamurthy
IPC分类号： H04N11/04 , H04B1/66 , H04N7/12 , H04N11/02
CPC分类号： H04N19/192 , H04N19/11 , H04N19/147 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/593
摘要： A method for high quality, fast intra coding usable for creating digital video content. The video image is defined by data points representing original colors. Data points are selected based on a color characteristic, and are arranged into groups. At an initial stage (and at subsequent stages): selecting a subset of data points, using a number of algorithms to generate predicted values of the colors represented by the data points, calculating error values and evaluating mathematical functions to produce cost values, identifying a minimum cost value, establishing a threshold based on the minimum cost and a selection factor, comparing each cost value to the threshold value, and identifying a number of probable best algorithms. One of the probable best algorithms is usable for block size selection and to generate final predicted values of the original color represented by the data points.
摘要翻译：一种用于创建数字视频内容的高品质，快速帧内编码的方法。视频图像由表示原始颜色的数据点定义。数据点是基于颜色特征选择的，并且被分组。在初始阶段（和后续阶段）：选择数据点的子集，使用多个算法来生成由数据点表示的颜色的预测值，计算误差值并评估数学函数以产生成本值，识别最小成本值，基于最小成本建立阈值和选择因子，将每个成本值与阈值进行比较，以及识别可能最佳算法的数量。可能的最佳算法之一可用于块大小选择，并生成由数据点表示的原始颜色的最终预测值。

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