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    • 2. 发明授权
    • Color correction
    • 颜色校正
    • US07548644B2
    • 2009-06-16
    • US10782683
    • 2004-02-19
    • Mark Julian RussellIan McLean
    • Mark Julian RussellIan McLean
    • G06K9/00G03F3/08H04N9/74
    • H04N1/6075H04N1/62
    • A digital image processing apparatus for applying pixel-based color correction to an input image to generate an output image is described herein. The apparatus includes color correction logic arranged to provide two or more color correction processes. Each color correction process has a respective associated locus in a color space and a respective associated color mapping operation. The color correction processes are arranged as a succession of processes so that the results of a color correction process form the input to a next such process in the succession. Each color correction process is operable to detect whether each pixel lies within the respective locus in color space and, if so, to apply the color mapping operation to that pixel. Each color correction process after the first process in the succession is configured to inhibit color mapping in respect of the loci associated with previous processes in the succession.
    • 这里描述了一种用于将基于像素的颜色校正用于输入图像以产生输出图像的数字图像处理装置。 该装置包括布置成提供两个或更多个颜色校正处理的颜色校正逻辑。 每个颜色校正处理在颜色空间和相应的相关联的颜色映射操作中具有相应的相关联的轨迹。 颜色校正处理被布置为一系列处理,使得颜色校正处理的结果在连续中形成到下一个这样的处理的输入。 每个颜色校正处理可操作以检测每个像素是否位于颜色空间中的相应轨迹内,并且如果是,则将颜色映射操作应用于该像素。 在连续的第一处理之后的每个颜色校正处理被配置为禁止与该继承中的先前处理相关联的轨迹的颜色映射。
    • 3. 发明授权
    • Colour correction
    • 颜色校正
    • US07280691B2
    • 2007-10-09
    • US10782549
    • 2004-02-19
    • Mark Julian RussellIan McLean
    • Mark Julian RussellIan McLean
    • G06K9/00
    • H04N1/6005H04N1/6075H04N9/643
    • Digital image processing apparatus for applying pixel-based colour correction to a hue-saturation-based polar representation of pixels of an input image to generate an output image comprises colour correction logic arranged to provide a colour mapping operation defined by a hue alteration amount and a key value associated with each pixel; the colour correction logic comprising: hue modifying logic for adding a proportion of the hue alteration amount to the hue of each pixel of the input image, the proportion depending on the key value associated with that pixel; and saturation modifying logic for modifying the saturation of each pixel in dependence on the hue alteration amount and the key value for that pixel, such that for a key value indicating that only a fraction of the hue alteration amount should be applied to a current pixel, the saturation of that pixel is also modified so that, when expressed with respect to a rectangular chrominance-based colour space, the pixel is moved to a position in that colour space substantially lying on a straight line between the original pixel position and the position that the pixel would occupy if the full hue alteration amount were applied.
    • 用于将基于像素的颜色校正应用于输入图像的像素的基于色相饱和的极性表示以生成输出图像的数字图像处理装置包括颜色校正逻辑,其被布置为提供由色相变化量和 与每个像素相关联的键值; 所述颜色校正逻辑包括:色调修改逻辑,用于将所述色调改变量的一部分添加到所述输入图像的每个像素的色调,所述比例取决于与所述像素相关联的键值; 以及饱和度修正逻辑,用于根据色调改变量和该像素的键值修改每个像素的饱和度,使得对于指示仅将色调改变量的一部分应用于当前像素的键值, 该像素的饱和度也被修改,使得当相对于基于矩形色度的颜色空间表示时,像素被移动到基本上位于原始像素位置和原始像素位置之间的直线上的该颜色空间中的位置, 如果应用了全色调改变量,像素将占用。
    • 4. 发明申请
    • ENCODING AND DETECTING APPARATUS
    • 编码和检测装置
    • US20100226425A1
    • 2010-09-09
    • US12303338
    • 2007-05-03
    • Stephen Mark KeatingIan McLeanMark Julian RussellDaniel Luke HooperDaniel Warren Tapson
    • Stephen Mark KeatingIan McLeanMark Julian RussellDaniel Luke HooperDaniel Warren Tapson
    • H04N11/02
    • G06T1/0071G06T1/0085
    • An encoding data processor generates a video material item marked copy by representing a payload data word as a code word and embedding the code word into a copy of the video material item. A preprocessor divides the payload word into plural parts, forms plural initial values from the plural parts, each initial value formed by adding parts of the payload data word to each initial value successively starting with the first part added to the first initial value, and adds the first and second to the second initial value so each subsequent initial value includes all parts of the payload data word of the previous initial values and a new part of the payload data word. An encryption processor receives each initial value and generates an encrypted data stream using a payload encryption key. A combiner combines the encrypted payload data word with the video material item.
    • 编码数据处理器通过将有效负载数据字表示为代码字并将代码字嵌入到视频材料项的副本中来生成标记为复制的视频材料项。 预处理器将有效载荷字分成多个部分,从多个部分形成多个初始值,每个初始值通过将有效载荷数据字的部分相加到从添加到第一初始值的第一部分开始的每个初始值而形成,并且添加 第一和第二到第二初始值,因此每个后续初始值包括先前初始值的有效载荷数据字的所有部分和有效载荷数据字的新部分。 加密处理器接收每个初始值并使用有效负载加密密钥生成加密的数据流。 组合器将加密的有效载荷数据字与视频材料项组合。
    • 8. 发明授权
    • Method of processing signals and apparatus for signal processing
    • 信号处理方法及信号处理装置
    • US06798902B1
    • 2004-09-28
    • US09626814
    • 2000-07-27
    • James Hendrie McIntyreIan McLeanClive Henry Gillard
    • James Hendrie McIntyreIan McLeanClive Henry Gillard
    • G06K900
    • H04N9/646
    • An image processing apparatus operates to process input signal samples representative of at least part of a colour video image to produce legal colour signal samples representative of a legal colour version of the image. The apparatus comprises an adjustment factor generator, which operates to generate a plurality of adjustment factors which when combined with the input signal samples have an effect of converting illegal colour pixels of the colour image into legal colour pixels, an adjustment factor softener, which operates to soften the adjustment factors whereby distortion in the legal colour video image produced when the adjustment factors are combined with the input signal samples is substantially reduced, and a colour legaliser coupled to the softener, which operates to combine the softened adjustment factors with the input signal samples to produce the legalised colour signal samples. The image processing apparatus may operate with input signal samples in the form having red, green or blue components, or in a form having luminance and chrominance components, or indeed in other forms.
    • 图像处理装置用于处理表示彩色视频图像的至少一部分的输入信号样本,以产生表示图像的合法颜色版本的合法颜色信号样本。 该装置包括调整因子发生器,其操作以产生多个调节因子,当与输入信号采样组合时具有将彩色图像的非法彩色像素转换成合法颜色像素的效果,调整因子软化器操作为 软化调节因素,从而大大减少了当调节因子与输入信号样本组合时产生的合法彩色视频图像的失真,以及耦合到软化器的颜色合法器,其操作以将软化的调整因子与输入信号样本 以产生合法的彩色信号样本。 图像处理装置可以以具有红色,绿色或蓝色分量的形式的输入信号样本或具有亮度和色度分量的形式,或者实际上以其它形式操作。
    • 9. 发明申请
    • Data processing apparatus
    • 数据处理装置
    • US20070189377A1
    • 2007-08-16
    • US11378336
    • 2006-03-20
    • Andrew TaylorIan McLean
    • Andrew TaylorIan McLean
    • H04B1/66
    • H04N19/467H04N19/132H04N19/176H04N19/61H04N19/70
    • A method and apparatus for modifying a compression encoded video sequence representing a video image are described. The compression encoded video sequence includes a group of pictures comprising an intra-encoded picture and at least one inter-encoded picture, the inter-encoded picture comprising a plurality of image blocks. At least one of the image blocks has a motion vector representing a displacement of the image block with respect to a reference image block in another picture in the group of pictures, and a difference signal representing a difference between the image block and the reference image block. The method comprises the steps of detecting, for each group of pictures, the inter-encoded pictures within the video sequence, extracting the image blocks from the detected inter-encoded pictures, compressing at least a portion of the extracted image blocks to form compressed image block data, and inserting replacement image blocks and the compressed image block data into the video sequence to replace the extracted image blocks. The replacement image blocks each have a motion vector of value zero and a difference signal of value zero. By providing replacement picture data which represents replacement image blocks having a motion vector of value zero and a difference signal of value zero, sets the inter-encoded pictures of the modified video sequence to display, when decoded, the same image as that displayed on the previous intra-encoded picture, thereby providing a form of removable (washable) impairment such as a visible watermark.
    • 描述用于修改表示视频图像的压缩编码视频序列的方法和装置。 压缩编码视频序列包括包括帧内编码图像和至少一个帧间编码图像的图像组,所述帧间编码图像包括多个图像块。 图像块中的至少一个具有表示图像块相对于图像组中的另一图像中的参考图像块的位移的运动矢量,以及表示图像块和参考图像块之间的差的差分信号 。 该方法包括以下步骤:针对每组图像检测视频序列内的编码间图像,从检测到的帧间编码图像中提取图像块,至少压缩所提取的图像块的一部分以形成压缩图像 块数据,以及将替换图像块和压缩图像块数据插入到视频序列中以替换所提取的图像块。 替换图像块各具有值为零的运动矢量和值为零的差分信号。 通过提供表示具有值为零的运动矢量的替换图像块和值为零的差分信号的替换图像数据,将经修改的视频序列的经编码的图像设置为在解码时显示与显示在其上的相同的图像 先前的编码图像,从而提供诸如可见水印的可移除(可洗涤)损伤的形式。