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1.发明授权Process for the format conversion of MPEG bitstreams, a system and computer program product therefor 有权用于MPEG比特流的格式转换的过程，系统和计算机程序产品公开(公告)号：US07369613B2
公开(公告)日：2008-05-06
申请号：US10243081
申请日：2002-09-12
申请人： Davide Concion , Emiliano Piccinelli , Danilo Pau
发明人： Davide Concion , Emiliano Piccinelli , Danilo Pau
摘要： A process for format conversion of DCT macroblocks in an MPEG video bitstream that are divided into blocks, each of which includes a plurality of microblocks. In each DCT block, the significant frequencies are identified and preserved, isolating a corresponding microblock preferably consisting of the microblock on the top left of each block and setting to zero the coefficients of the remaining microblocks. On the microblock thus isolated there is performed an inverse discrete cosine transform, and the microblock thus obtained is merged with the homologous microblocks obtained from the other blocks comprised in a respective starting macroblock, so as to give rise to a merging block. The merging block thus obtained undergoes a discrete cosine transform so as to obtain a final block, which can be assembled into a macroblock with converted format.
摘要翻译： MPEG视频比特流中的DCT宏块的格式转换处理，被分成块，每个块包括多个微块。 在每个DCT块中，识别和保存有效频率，隔离优选地由每个块的左上角的微块组成的相应微块，并将剩余微块的系数设置为零。 在这样隔离的微块上，执行逆离散余弦变换，并且由此获得的微块与从包含在相应起始宏块中的其他块获得的同源微块合并，以产生合并块。 如此获得的合并块经历离散余弦变换，以获得最终的块，其可以被组合成具有转换格式的宏块。
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2.发明申请Method and system for de-interlacing digital images, and computer program product therefor 有权去隔行数字图像的方法和系统，以及计算机程序产品公开(公告)号：US20050179814A1
公开(公告)日：2005-08-18
申请号：US11041518
申请日：2005-01-21
申请人： Danilo Pau , Emiliano Piccinelli , Fabrizio Rovati , Daniele Alfonso , Elio Privitera , Angelo Schiavone
发明人： Danilo Pau , Emiliano Piccinelli , Fabrizio Rovati , Daniele Alfonso , Elio Privitera , Angelo Schiavone
CPC分类号： H04N5/4448 , H04N5/145 , H04N5/4401 , H04N7/012 , H04N7/014 , H04N7/0142 , H04N19/51 , H04N19/56 , H04N21/4122 , H04N21/44008 , H04N21/4402
摘要： A spatial-type de-interlacing process to be applied to a digital image for obtaining a spatial reconstruction. Furthermore, to the digital image there are also applied one or more temporal-type motion compensation de-interlacing processes for obtaining one or more temporal reconstructions, and the spatial reconstruction and the one or more temporal reconstructions are sent to a decision module. The decision module applies a cost function to the spatial reconstruction and the temporal reconstructions and chooses from among the spatial reconstruction and the temporal reconstructions the one that minimizes the cost function. Preferential application is to display systems, in particular displays of a cathode-ray type, liquid-crystal type, and plasma type which use a mechanism of progressive scan.
摘要翻译： 要应用于数字图像以获得空间重建的空间型去隔行处理。 此外，对于数字图像，还应用一个或多个时间型运动补偿去隔行处理来获得一个或多个时间重建，并且将空间重建和一个或多个时间重建发送到决策模块。 决策模块将成本函数应用于空间重建和时间重建，并从空间重建和时间重建中选择最小化成本函数的重建。 优选应用是显示系统，特别是使用逐行扫描机制的阴极射线型，液晶型和等离子型显示器。
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3.发明授权公开(公告)号：US06829373B2
公开(公告)日：2004-12-07
申请号：US09811351
申请日：2001-03-16
申请人： Emiliano Piccinelli , Fabrizio Rovati , Danilo Pau
发明人： Emiliano Piccinelli , Fabrizio Rovati , Danilo Pau
IPC分类号： G06K900
CPC分类号： H04N19/57 , H04N19/137 , H04N19/51
摘要： A method of estimating the motion field of a digital picture sequence includes subdividing a current picture to examine in an integer number of macroblocks, for each macroblock of the current picture determining a search window centered on a macroblock of a preceding picture placed in the same position of the considered macroblock of the current picture, carrying out a motion estimation between the considered macroblock of the current picture and the macroblock most similar to it included in the window. At least a dimension of the search window is established as a function of the corresponding dimension of the search window used for the preceding picture, the estimated motion field of the preceding picture and certain threshold values.
摘要翻译： 估计数字图像序列的运动场的方法包括：对当前图像的每个宏块进行细分，以检查整数个宏块，该宏块确定以位于相同位置的先前图像的宏块为中心的搜索窗口 当前图片的所考虑的宏块，执行当前图片的所考虑的宏块与包括在窗口中最类似的宏块之间的运动估计。 根据用于前一图像的搜索窗口的相应尺寸，前一图像的估计运动场和某些阈值，建立至少搜索窗口的维度。
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4.发明授权Video pictures compression and coding with decision step for field/frame and motion vectors DCT 有权视频图像压缩和编码，具有用于场/帧和运动矢量DCT的决定步骤公开(公告)号：US06556718B1
公开(公告)日：2003-04-29
申请号：US09438853
申请日：1999-11-12
申请人： Emiliano Piccinelli , Luca Pezzoni , Danilo Pau
发明人： Emiliano Piccinelli , Luca Pezzoni , Danilo Pau
IPC分类号： G06K936
CPC分类号： H04N19/18 , H04N19/107 , H04N19/112 , H04N19/124 , H04N19/137 , H04N19/139 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/61
摘要： A method for coding video data according to the MPEG-2 standard is provided. Non-Intra fields are identified among Intra fields and various coding options exist for the non-Intra fields, including removal of temporal redundancy using a motion estimation algorithm and identification of predictor macroblocks for providing approximation according to a prediction mode selectable among respective predicting modes of the different types of non-Intra fields. The method includes calculating a discrete cosine transform (DCT) for blocks of data of the predictor macroblocks according to a frame mode of decomposition with the blocks being composed of lines of data belonging to even lines semifield and to odd lines semifield, or in a field mode of decomposition with the blocks being composed of lines of data belonging to the same semifield. The data resulting from the DCT carried out by blocks of data to be stored is quantized and coded. The efficiency of the method for coding video data according to the MPEG-2-standard is increased by selecting between field or frame modes and motion compensation or no motion compensation with an algorithm that assesses and compares significant complexity indexes of the macroblocks.
摘要翻译： 提供了一种根据MPEG-2标准编码视频数据的方法。 非Intra域被识别在Intra域中，并且对于非Intra域存在各种编码选项，包括使用运动估计算法去除时间冗余，以及根据在各个预测模式之间可选择的预测模式来提供预测宏块的识别 不同类型的非Intra域。 该方法包括根据分解的帧模式来计算预测器宏块的数据块的离散余弦变换（DCT），其中块由属于偶数行半场的数据线和奇数行半场的数据组构成 模块的分解模式由属于同一半场的数据线构成。 对由要存储的数据块执行的DCT产生的数据进行量化和编码。 根据MPEG-2-标准对视频数据进行编码的方法的效率通过使用评估和比较宏块的重要复杂度指标的算法来选择场或帧模式和运动补偿或不进行运动补偿来增加。
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5.发明授权Method and device for processing video signals for presentation on a display and corresponding computer program product 有权用于处理视频信号以在显示器上显示和对应的计算机程序产品的方法和装置公开(公告)号：US07012618B2
公开(公告)日：2006-03-14
申请号：US10610341
申请日：2003-06-30
IPC分类号： G09G5/02
CPC分类号： G09G3/3611 , G09G3/3688 , G09G5/363 , G09G2340/02 , G09G2340/06 , H04N9/64
摘要： An RGB digital video signal destined to be displayed on a display such as a liquid crystal display (LCD) is converted from the RGB color space to the YUV color space. The signal converted into the YUV color space is subjected to at least a processing operation selected among a sub-sampling operation (24) and a data compression operation (26). The signal is then stored in a memory and the signal read from said memory (12) is then subjected to at least a return operation (28, 30) complementary to the aforesaid processing operation (24, 26). The signal subjected to the aforesaid return operation is lastly reconverted from the YUV color space to the RGB color space, thus being susceptible to be displayed on the display.
摘要翻译： 将要显示在诸如液晶显示器（LCD）的显示器上的RGB数字视频信号从RGB色彩空间转换为YUV色彩空间。 转换成YUV色彩空间的信号至少经受从子采样操作（24）和数据压缩操作（26）中选择的处理操作。 然后将信号存储在存储器中，然后从所述存储器（12）读取的信号经受与上述处理操作（24,26）互补的至少一个返回操作（28,30）。 经过上述返回操作的信号最后从YUV颜色空间重新转换为RGB颜色空间，因此易于显示在显示器上。
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6.发明授权Detection of a 3:2 pulldown in a motion estimation phase and optimized video compression encoder 有权在运动估计阶段检测3：2下拉和优化的视频压缩编码器公开(公告)号：US06549668B1
公开(公告)日：2003-04-15
申请号：US09416646
申请日：1999-10-12
申请人： Luca Pezzoni , Emiliano Piccinelli , Danilo Pau
发明人： Luca Pezzoni , Emiliano Piccinelli , Danilo Pau
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/61
摘要： A method for compressing encoding data of a sequence of pictures is based on a motion estimation among the successive images to remove the temporal redundancy from the data. The method recognizes a 3:2 pulldown conversion of a series of photograms of a filmed sequence in a sequence of TV frames. The TV frames have a number greater than the number of the photograms by duplicating certain pictures in a certain order. The redundancy due to such picture duplications is eliminated.
摘要翻译： 用于压缩图像序列的编码数据的方法基于连续图像之间的运动估计，以从数据中去除时间冗余。 该方法识别电视帧序列中拍摄序列的一系列照片的3：2下拉转换。 通过以特定顺序复制某些图像，TV帧的数量大于照片的数量。 由于这种图像重复而导致的冗余被消除。
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7.发明授权Method and system for de-interlacing digital images, and computer program product therefor 有权去隔行数字图像的方法和系统，以及计算机程序产品公开(公告)号：US07663695B2
公开(公告)日：2010-02-16
申请号：US11041518
申请日：2005-01-21
申请人： Danilo Pau , Emiliano Piccinelli , Fabrizio Rovati , Daniele Alfonso , Elio Privitera , Angelo Schiavone
发明人： Danilo Pau , Emiliano Piccinelli , Fabrizio Rovati , Daniele Alfonso , Elio Privitera , Angelo Schiavone
CPC分类号： H04N5/4448 , H04N5/145 , H04N5/4401 , H04N7/012 , H04N7/014 , H04N7/0142 , H04N19/51 , H04N19/56 , H04N21/4122 , H04N21/44008 , H04N21/4402
摘要： A spatial-type de-interlacing process to be applied to a digital image for obtaining a spatial reconstruction. Furthermore, to the digital image there are also applied one or more temporal-type motion compensation de-interlacing processes for obtaining one or more temporal reconstructions, and the spatial reconstruction and the one or more temporal reconstructions are sent to a decision module. The decision module applies a cost function to the spatial reconstruction and the temporal reconstructions and chooses from among the spatial reconstruction and the temporal reconstructions the one that minimizes the cost function. Preferential application is to display systems, in particular displays of a cathode-ray type, liquid-crystal type, and plasma type which use a mechanism of progressive scan.
摘要翻译： 要应用于数字图像以获得空间重建的空间型去隔行处理。 此外，对于数字图像，还应用一个或多个时间型运动补偿去隔行处理来获得一个或多个时间重建，并且将空间重建和一个或多个时间重建发送到决策模块。 决策模块将成本函数应用于空间重建和时间重建，并从空间重建和时间重建中选择最小化成本函数的重建。 优选应用是显示系统，特别是使用逐行扫描机制的阴极射线型，液晶型和等离子型显示器。
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8.发明授权Process for changing the resolution of MPEG bitstreams, and a system and a computer program product therefor 有权用于改变MPEG比特流的分辨率的过程，以及用于其的系统和计算机程序产品公开(公告)号：US07254174B2
公开(公告)日：2007-08-07
申请号：US10075087
申请日：2002-02-11
摘要： A process and a system is described for generating an MPEG output bitstream starting from an MPEG input bitstream. The output bitstream has a resolution modified with respect to the resolution of the input bitstream. In the input bitstream, first portions that substantially do not affect and second portions that do affect resolution variation are distinguished. The second portions are then subjected to a function of modification of the resolution obtained by filtering the second portions in a domain of the discrete cosine transform, and then are transferred to the output bitstream. A corresponding computer program product is also provided.
摘要翻译： 描述了从MPEG输入比特流开始生成MPEG输出比特流的过程和系统。 输出比特流具有关于输入比特流的分辨率修改的分辨率。 在输入比特流中，区分实质上不影响的第一部分和确实影响分辨率变化的第二部分。 然后对第二部分进行通过对离散余弦变换的域中的第二部分进行滤波而获得的分辨率的修改的功能，然后被传送到输出比特流。 还提供了相应的计算机程序产品。
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9.发明授权Coprocessor circuit architecture, for instance for digital encoding applications 有权协处理器电路架构，例如用于数字编码应用公开(公告)号：US06996179B2
公开(公告)日：2006-02-07
申请号：US09819940
申请日：2001-03-27
申请人： Fabrizio Rovati , Danilo Pau , Emiliano Piccinelli
发明人： Fabrizio Rovati , Danilo Pau , Emiliano Piccinelli
IPC分类号： H04N7/12
CPC分类号： H04N19/53 , H04N19/433
摘要： A coprocessor circuit for processing image data in digital form, having a motion vector controller block for generating, starting from the image data, motion vector values that include predictor data and macroblock data relating to a current macroblock of the image data to be estimated and being adapted to be stored at respective memory addresses. Also included is an address generator block for extracting respective addresses from the motion vector values, a predictor fetch block for retrieving predictor data based on respective addresses extracted by the address generator block, a current macroblock fetch and distengine block for retrieving macroblock data based on respective addresses extracted by the address generator block and for processing the macroblock data according to a given function, and a decision block for collecting the retrieved data as partial results and selecting the best result therefrom.
摘要翻译： 一种用于处理数字形式的图像数据的协处理器电路，具有运动矢量控制器块，用于从图像数据开始，生成包括与要估计的图像数据的当前宏块有关的预测数据和宏块数据的运动矢量值 适于存储在相应的存储器地址。 还包括用于从运动矢量值中提取相应地址的地址生成器块，用于基于由地址生成器块提取的相应地址检索预测变量数据的预测器获取块，用于基于相应的宏块数据来检索宏块数据的当前宏块读取和分发引擎块 由地址生成器块提取的地址，并根据给定的功能处理宏块数据;判定块，用于收集检索的数据作为部分结果，并从中选择最佳结果。
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10.发明授权Process and system for the compression of digital video signals, a system and a computer program product therefor 有权用于数字视频信号压缩的过程和系统，系统及其计算机程序产品公开(公告)号：US06925119B2
公开(公告)日：2005-08-02
申请号：US10247845
申请日：2002-09-20
CPC分类号： G06T9/008 , H04N19/124 , H04N19/139 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/61 , H04N19/94
摘要： A process for encoding digital video signals organized in frames comprises the operations of dividing the frames into blocks starting from macroblocks subjected to motion-compensation and applying to the blocks a discrete cosine transform in such a way as to generate respective sets of coefficients. The sets of coefficients are then assembled by being organized into sets of vectors by a assembling module. Once the variance of the vectors has been detected, the vectors themselves are quantized on a number of available bits by a pyramid vector quantizer, associating to the vectors respective quantization pyramids having given sizes according to the variance detected and to the number of available bits. Finally, the vectors are encoded with respective codewords.
摘要翻译： 用于对以帧为单位的数字视频信号进行编码的过程包括将帧划分为从经过运动补偿的宏块开始的块的操作，并以这样的方式向块提供离散余弦变换，以便生成各组系数。 然后通过组装模块将这些系数组合成向量组。 一旦已经检测到向量的方差，则通过金字塔矢量量化器在矢量数量上量化向量本身，根据检测到的方差与可用比特数相关联具有给定大小的向量各个量化金字塔。 最后，矢量用相应的码字编码。
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