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公开(公告)号：US20060133472A1
公开(公告)日：2006-06-22
申请号：US10518834
申请日：2003-06-26
CPC分类号： H04N19/85 , H04N19/117 , H04N19/17 , H04N19/33
摘要： A method and apparatus for providing spatial scalable compression of a video stream is disclosed. The video stream is downsampled to reduce the resolution of the video stream. The downsampled video stream is encoded to produce a base stream. The base stream is decoded and upconverted to produce a reconstructed video stream. The reconstructed video stream is subtracted from the video stream to produce a residual stream. It is then determined which segments or pixels in each frame have a predetermined chance of having a predetermined characteristic. A gain value for the content of each segment or pixel is calculated, wherein the gain for pixels which have the predetermined chance of having the predetermined characteristic is biased toward 1 and the gain for other pixels is biased toward 0. The residual stream is multiplied by the gain values so as to remove bits from the residual stream which do not correspond to the predetermined characteristic. The resulting residual stream is encoded and outputted as an enhancement stream.
摘要翻译： 公开了一种用于提供视频流的空间可缩放压缩的方法和装置。 视频流被下采样以降低视频流的分辨率。 下采样的视频流被编码以产生基本流。 基本流被解码和上变频以产生重建的视频流。 从视频流中减去重建的视频流以产生残余流。 然后确定每个帧中的哪些段或像素具有预定的具有预定特性的机会。 计算每个段或像素的内容的增益值，其中具有预定特征的预定机会的像素的增益被偏向1，并且将其他像素的增益偏向0.将剩余流乘以 增益值，以便从不符合预定特性的剩余流中除去比特。 所得到的残留流被编码并作为增强流输出。
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2.发明申请Method and apparatus for motion compensated temporal interpolation of video sequences 审中-公开视频序列的运动补偿时间插值的方法和装置公开(公告)号：US20050226330A1
公开(公告)日：2005-10-13
申请号：US10498953
申请日：2002-12-16
申请人： Wilhelmus Bruls , Frederik De Bruijn , Gerard De Haan , Dzevdet Burazerovic , Gerardus Vervoort
发明人： Wilhelmus Bruls , Frederik De Bruijn , Gerard De Haan , Dzevdet Burazerovic , Gerardus Vervoort
CPC分类号： H04N19/59 , H04N19/31 , H04N19/503 , H04N19/587
摘要： Method for encoding a digital video stream, comprising the steps of encoding a video sequence into a full frame sequence, forming a decimated frame sequence by removing a predetermined number of frames from the full frame sequence by means of temporal decimation, locally decoding the full frame sequence, locally decoding the decimated frame sequence, temporally interpolating the decoded decimated frame sequence by means of an interpolator, comparing the locally decoded frames of the full frame sequence with the corresponding frames of the locally interpolated frame sequence, determining residual information for a frame based on at least the comparison for that frame, and providing an output stream comprising the decimated frame sequence and the determined residual information.
摘要翻译： 用于对数字视频流进行编码的方法，包括以下步骤：将视频序列编码为全帧序列，通过借助于时间抽取从全帧序列中去除预定数量的帧来形成抽取帧序列，本地解码全帧 序列，本地解码抽取的帧序列，通过内插器对经解码的抽取帧序列进行时间内插，将全帧序列的局部解码帧与局部内插帧序列的对应帧进行比较，确定基于帧的残差信息 至少对该帧进行比较，以及提供包括抽取帧序列和所确定的剩余信息的输出流。
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公开(公告)号：US20070160300A1
公开(公告)日：2007-07-12
申请号：US10596134
申请日：2004-11-29
CPC分类号： H04N19/59 , H04N19/126 , H04N19/14 , H04N19/169 , H04N19/33 , H04N19/61
摘要： An apparatus is disclosed for performing spatial scalable compression of video information captured in a plurality of frames including an encoder for encoding and outputting the captured video frames into a compressed data stream, comprising a base layer comprising an encoded bitstream having a relatively low resolution, a high resolution enhancement layer comprising a residual signal having a relatively high resolution, and wherein a dead zone operation unit attenuates the residual signal, the residual signal being the difference between the original frames and the upscaled frames from the base layer. As a result, the number of bits needed for the compressed data stream is reduced for a given observed video quality.
摘要翻译： 公开了一种用于对在多个帧中捕获的视频信息执行空间可缩放压缩的装置，包括用于对所捕获的视频帧进行编码并将其输出为压缩数据流的编码器，包括：基本层，包括具有相对低分辨率的编码比特流， 高分辨率增强层，其包括具有相对较高分辨率的残留信号，并且其中死区操作单元衰减所述残留信号，所述残留信号是来自所述基本层的所述原始帧与所述放大帧之间的差。 因此，对于给定的观察视频质量，压缩数据流所需的位数减少。
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公开(公告)号：US20060075238A1
公开(公告)日：2006-04-06
申请号：US10539691
申请日：2003-11-14
IPC分类号： H04L9/00
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00289 , G11B20/00884 , G11B20/00891
摘要： The present invention relates to a method for processing an analog signal. The method involves hiding a digital watermark signal in the analog signal by combining the watermark signal with the analog signal (103). The watermark signal may be detected and extracted by a device (108) receiving the analog signal. The method includes embedding a key in the watermark signal, such that the key may be extracted and used by an encoding device (108) for encrypting digital content that is based on the analog signal. The invention also relates to an encoding device, which is arranged to perform such encryption.
摘要翻译： 本发明涉及一种处理模拟信号的方法。 该方法涉及通过将水印信号与模拟信号（103）组合来将模拟信号中的数字水印信号隐藏起来。 可以由接收模拟信号的设备（108）检测和提取水印信号。 该方法包括在水印信号中嵌入密钥，使得密钥可以由编码设备（108）提取和使用，用于对基于模拟信号的数字内容进行加密。 本发明还涉及一种被配置为执行这种加密的编码装置。
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公开(公告)号：US20060165163A1
公开(公告)日：2006-07-27
申请号：US10547324
申请日：2004-02-25
CPC分类号： H04N19/124 , H04N19/136 , H04N19/17 , H04N19/51 , H04N19/96
摘要： The invention relates to a video encoder (201) for encoding a video signal. The video encoder comprises a segmentation processor (207) which divides the picture into picture regions. Preferably, picture regions having a high degree of flatness or uniformity are determined in this way. A characteristics processor (209) determine a spatial frequency characteristic for each picture region, and a coding controller (211) selects an encoding block size, such as a prediction block size for motion estimation, in response to the spatial frequency characteristic. An encode processor (213) encodes the picture using the selected encoding block size. Specifically, increasing block sizes are selected for increasing degrees of uniformity or flatness indicated by the spatial frequency characteristic. Thereby, an increasing proportion of high frequency components and a consistent choice of encoding block sizes are maintained, and thus the coding artefacts from many encoders having variable prediction block sizes is reduced. The invention is particularly suitable for H.264 and similar encoders.
摘要翻译： 本发明涉及用于对视频信号进行编码的视频编码器（201）。 视频编码器包括将图像划分成图像区域的分割处理器（207）。 优选地，以这种方式确定具有高度平坦度或均匀性的图像区域。 特征处理器（209）确定每个图像区域的空间频率特性，并且编码控制器（211）响应于空间频率特性来选择诸如用于运动估计的预测块大小的编码块大小。 编码处理器（213）使用所选择的编码块大小来对图像进行编码。 具体地，增加块尺寸被选择以增加由空间频率特性指示的均匀度或平坦度。 因此，保持了高频分量的不断增加的比例和编码块大小的一致选择，因此减少了具有可变预测块大小的许多编码器的编码伪影。 本发明特别适用于H.264和类似的编码器。
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6.发明申请Video decoder locally uses motion-compensated interpolation to reconstruct macro-block skipped by encoder 审中-公开视频解码器本地使用运动补偿内插来重构由编码器跳过的宏块公开(公告)号：US20050013496A1
公开(公告)日：2005-01-20
申请号：US10621003
申请日：2003-07-16
CPC分类号： H04N19/132 , H04N19/137 , H04N19/139 , H04N19/176 , H04N19/40 , H04N19/577 , H04N19/61 , H04N19/70
摘要： In macroblock-based coding systems such as MPEG-1 video, MPEG-2 video and MPEG-4 visual, an encoder in the invention decides on macroblock level whether the macroblock is to be encoded or whether local motion-compensated interpolation processing at a compatible decoder can be used to reconstruct the macroblock. In the latter case, the macroblock is skipped. If the decoder detects a skipped macroblock, the decoder reconstructs the macroblock and overwrites the data conventionally generated in MPEG under the skipped macro-block condition.
摘要翻译： 在诸如MPEG-1视频，MPEG-2视频和MPEG-4视觉的基于宏块的编码系统中，本发明的编码器决定宏块水平是否要对宏块进行编码，或者是否在兼容的本地运动补偿插值处理 解码器可用于重建宏块。 在后一种情况下，跳过宏块。 如果解码器检测到跳过的宏块，则解码器重构宏块并且覆盖在跳过的宏块条件下在MPEG中传统生成的数据。
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