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1.发明授权公开(公告)号：US08270478B2
公开(公告)日：2012-09-18
申请号：US12295457
申请日：2007-03-29
IPC分类号： H04N11/12
CPC分类号： G06F7/544 , G06F2207/5442 , H04N19/43
摘要： A logic circuit is configured to calculate a sliding sum of absolute differences of a plurality of numbers from a plurality of members respectively selected successively from all members of a sequence of numbers. The logic circuit reduces an amount of logic that is required to perform the sum of absolute differences, and thereby saves resources and latency.
摘要翻译： 逻辑电路被配置为计算从数字序列的所有成员连续选择的多个成员中的多个数字的绝对差的滑动和。 逻辑电路减少执行绝对差值之和所需的逻辑量，从而节省资源和延迟。
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公开(公告)号：US20080147764A1
公开(公告)日：2008-06-19
申请号：US11824806
申请日：2007-07-03
CPC分类号： H04N19/547 , H04N19/51
摘要： A motion estimator 50 for image processing finds a motion vector from a search area in a reference picture to a source macroblock in a source picture by finding a maximum of a 2-dimensional normalised cross-correlation surface between the source macroblock and a portion of the reference search area using a transform domain.
摘要翻译： 用于图像处理的运动估计器50通过找到源宏块与源宏块之间的二维标准化互相关表面的最大值，从源图像中的源宏块中的参考图像中的搜索区域中找到运动矢量 参考搜索区域使用变换域。
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公开(公告)号：US20100002773A1
公开(公告)日：2010-01-07
申请号：US12513957
申请日：2007-11-09
IPC分类号： H04N7/26
CPC分类号： H04N5/144 , G06T5/20 , G06T7/223 , G06T2207/10016 , H04N5/21
摘要： Motion compensation means for a time recursive filter includes a block motion estimation module (12) having an input video signal (1) and a input delayed output signal (6) of the time recursive filter. The block motion estimation module outputs block motion vectors (13) to at least one block splitting stage (14, 16, 18) which together with the input video signal (1) and the delayed output signal (6) of the time recursive filter is arranged to produce at least sub-block motion vectors (15, 17, 19) for input into image reconstruction means (9) to produce a motion-compensated image (11).
摘要翻译： 时间递归滤波器的运动补偿装置包括具有时间递归滤波器的输入视频信号（1）和输入延迟输出信号（6）的块运动估计模块（12）。 块运动估计模块将块运动矢量（13）输出到与输入视频信号（1）和时间递归滤波器的延迟输出信号（6）一起的至少一个块分割级（14,16,18） 被布置为产生用于输入到图像重建装置（9）中以产生运动补偿图像（11）的至少子块运动矢量（15,17,19）。
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4.发明申请公开(公告)号：US20100202518A1
公开(公告)日：2010-08-12
申请号：US12295457
申请日：2007-03-29
IPC分类号： H04N7/32
CPC分类号： G06F7/544 , G06F2207/5442 , H04N19/43
摘要： A logic circuit is configured to calculate a sliding sum of absolute differences of a plurality of numbers from a plurality of members respectively selected successively from all members of a sequence of numbers.
摘要翻译： 逻辑电路被配置为计算从数字序列的所有成员连续选择的多个成员中的多个数字的绝对差的滑动和。
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公开(公告)号：US06804374B1
公开(公告)日：2004-10-12
申请号：US09600678
申请日：2000-07-20
IPC分类号： G06K900
CPC分类号： G06T1/005 , G06T2201/0052 , G06T2201/0065 , H04N1/32154 , H04N1/32165 , H04N2201/3233 , H04N2201/327
摘要： A method and apparatus detects the presence of a watermark in digital data. The digital data may represent picture or sound information and maybe in the form of a broadcast television signal or a signal that has been recorded on a recording medium such as a compact disc. The watermark includes coefficients which have been subject to an inverse local orthogonal transform before being embedded in the input data. In order to detect the presence of the watermark, the input watermarked data is first forward transformed and subtracted from the watermark coefficients so as to derive the data coefficients. The data coefficients are squared and formed into a local average to obtain a measure of the power in the local average. The watermark coefficients are divided by the local average so as to scale them and the scaled watermark coefficients are cross-correlated with the input data to detect whether the watermark is present. The cross-correlation is performed by means of a multiplier receiving the input data as a first input and the scaled watermark coefficients as a second input. The resulting output detection signal is subjected to a thresholding operation using a threshold set in dependence upon the global average power of the input data set.
摘要翻译： 方法和装置在数字数据中检测水印的存在。 数字数据可以表示图像或声音信息，并且可以以广播电视信号或已经记录在诸如光盘的记录介质上的信号的形式。 水印包括在被嵌入在输入数据中之前已经经过逆局部正交变换的系数。 为了检测水印的存在，输入的水印数据首先被正交变换并从水印系数中减去，从而导出数据系数。 数据系数被平方并形成局部平均值，以获得局部平均功率的度量。 将水印系数除以局部平均值以便缩放，并且缩放的水印系数与输入数据互相关，以检测是否存在水印。 互相关是通过接收输入数据作为第一输入的乘法器和经缩放的水印系数作为第二输入来执行的。 所得到的输出检测信号使用根据输入数据集合的全局平均功率设置的阈值进行阈值操作。
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公开(公告)号：US08406304B2
公开(公告)日：2013-03-26
申请号：US11811230
申请日：2007-06-08
IPC分类号： H04N7/12
CPC分类号： H04N19/16 , H04N19/162 , H04N19/172 , H04N19/176 , H04N19/433 , H04N19/46 , H04N19/55 , H04N19/57 , H04N19/61
摘要： A motion estimator includes a shape, address and vector generator to produce control signals according to a selected size and shape of a search area comprising scan lines. A variable delay reads reference image data of a frame in which a matching macroblock is sought from a store under control of a variable delay control signal from the signal generator to align a current serial input stream of a current scan line with a serial input stream of an immediately preceding scan line. The aligned reference image pixel data is matched against pixel data of a current macroblock using a vector from the signal generator to produce a score representing a quality of the match. A best score together with the corresponding best vector is recorded and the best vector output.
摘要翻译： 运动估计器包括形状，地址和向量生成器，以根据包括扫描线的搜索区域的选定大小和形状产生控制信号。 可变延迟在来自信号发生器的可变延迟控制信号的控制下从存储器读取匹配宏块的参考图像数据，以将当前扫描线的当前串行输入流与串行输入流 紧接在前的扫描线。 使用来自信号发生器的矢量将对准的参考图像像素数据与当前宏块的像素数据进行匹配，以产生表示匹配质量的分数。 记录最佳分数以及相应的最佳向量，并获得最佳矢量输出。
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公开(公告)号：US07903901B2
公开(公告)日：2011-03-08
申请号：US11809658
申请日：2007-06-01
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20 , G06T2207/10016 , H04N19/117 , H04N19/14 , H04N19/182 , H04N19/80 , H04N19/85
摘要： A recursive filter system and method is provided. A weighted value of luminance and chrominance of a stored picture element is generated by summing weighted values of luminance and chrominance of a picture element and neighboring picture elements. A first proportional parameter for the stored picture element is generated with a sum of differences between the luminance and chrominance of the stored picture element and surrounding picture elements. A weighted picture element is generated from a proportion of the stored picture element and a complimentary proportion of the weighted value. Picture elements of the next image and a second proportional parameter are inputted. A filtered image is generated by combining a proportion of each input picture element of the next image with a complementary proportion of the weighted stored picture element of the first image. The filtered image is stored for corresponding combination with a succeeding image.
摘要翻译： 提供递归过滤系统和方法。 通过对图像元素和相邻图像元素的亮度和色度的加权值相加来生成存储的图像元素的亮度和色度的加权值。 存储的图像元素的第一比例参数由存储的图像元素和周围的图像元素的亮度和色度之差的和产生。 从存储的像素的比例和加权值的互补比例生成加权像素。 输入下一图像的图像元素和第二比例参数。 通过将下一图像的每个输入图像的一部分与第一图像的加权存储图像的互补比例组合来生成滤波图像。 存储滤波后的图像以与后续图像相对应地组合。
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公开(公告)号：US07783963B2
公开(公告)日：2010-08-24
申请号：US11597153
申请日：2005-05-19
IPC分类号： H03M13/03
CPC分类号： H03M13/2936 , H03M13/1515 , H03M13/253 , H03M13/256 , H03M13/2948 , H03M13/37 , H03M13/3994 , H03M13/41
摘要： Encoded symbols of a concatenated convolutional-encoded and block encoded signal are presented to a conventional first stage of a concatenated decoder, comprising in sequence a soft metric generator, a Viterbi decoder, a first de-interleaver and a first block decoder such as a Reed-Solomon decoder. The encoded symbols are also presented to a delay chain to produce progressively delayed encoded symbols. Where an output block of the conventional decoder is indicated as being a valid codeword by the first block decoder, the bytes in this block are marked as being correct. These bytes that are known to be correct are then used after interleaving and serialization as known bits input to a second stage of the decoder process operating on the delayed encoded symbols and incorporating a modified soft metric generator constrained by the known bits. This process can be extended to further iterations as required. A modified Viterbi decoder, which is also constrained by the known bits, may also be used in the second and subsequent iterative stages.
摘要翻译： 连续卷积编码和块编码信号的编码符号被呈现给级联解码器的传统第一级，其顺序包括软度量生成器，维特比解码器，第一解交织器和第一块解码器，例如里德 -Solomon解码器 编码符号也被呈现给延迟链以产生逐渐延迟的编码符号。 在常规解码器的输出块被第一块解码器指示为有效码字的情况下，该块中的字节被标记为是正确的。 已知正确的这些字节然后在交织和串行化之后被使用，作为输入到对延迟的编码符号进行操作的解码器进程的第二级的已知位并且包括由已知位约束的修改的软度量发生器。 该过程可以根据需要扩展到进一步的迭代。 还可以在第二和随后的迭代阶段中使用也被已知位约束的修改维特比解码器。
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