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1.发明授权Method of compensating the color tone differences between two images of the same scene 有权补偿相同场景的两幅图像之间的色调差异的方法公开(公告)号：US08199384B2
公开(公告)日：2012-06-12
申请号：US11811717
申请日：2007-06-11
IPC分类号： G03F3/08
CPC分类号： G06T5/40 , G06T5/009 , G06T2207/10016 , G06T2207/10024
摘要： The color tone compensation method provides a simple and efficient method to compensate the color tone differences between two different sources of images. A first image sample, such as a still image, from a first image capturing source and a second image sample, such as a video frame, from a second image capturing source are aligned, and a tone-mapping estimation routine is applied to the two aligned images. The tone-mapping estimation routine uses the pixel intensity value histograms associated with the two aligned images and generates a tone mapping table. The tone mapping table includes a conversion intensity value for each intensity value in the second image. The conversion intensity value is a statistical measure, such as the mean, calculated according to the data in the corresponding pixel intensity value histogram. The tone-mapping table is applied to any image generated by the second image capturing source, thereby generating a new image with similar color tone as the first image generated by the first image capturing source.
摘要翻译： 色调补偿方法提供了一种简单有效的方法来补偿两种不同图像源之间的色调差异。 将来自第一图像捕获源的第一图像样本（例如静止图像）和来自第二图像捕获源的诸如视频帧的第二图像样本对准，并且将色调映射估计例程应用于两个 对齐图像。 色调映射估计例程使用与两个对准图像相关联的像素强度值直方图，并生成色调映射表。 色调映射表包括第二图像中每个强度值的转换强度值。 转换强度值是统计度量，如平均值，根据相应像素强度值直方图中的数据计算。 色调映射表应用于由第二图像捕获源产生的任何图像，从而生成与由第一图像捕获源生成的第一图像相似的色调的新图像。
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2.发明申请Method of compensating the color tone differences between two images of the same scene 有权补偿相同场景的两幅图像之间的色调差异的方法公开(公告)号：US20080304087A1
公开(公告)日：2008-12-11
申请号：US11811717
申请日：2007-06-11
IPC分类号： G06F15/00
CPC分类号： G06T5/40 , G06T5/009 , G06T2207/10016 , G06T2207/10024
摘要： The color tone compensation method provides a simple and efficient method to compensate the color tone differences between two different sources of images. A first image sample, such as a still image, from a first image capturing source and a second image sample, such as a video frame, from a second image capturing source are aligned, and a tone-mapping estimation routine is applied to the two aligned images. The tone-mapping estimation routine uses the pixel intensity value histograms associated with the two aligned images and generates a tone mapping table. The tone mapping table includes a conversion intensity value for each intensity value in the second image. The conversion intensity value is a statistical measure, such as the mean, calculated according to the data in the corresponding pixel intensity value histogram. The tone-mapping table is applied to any image generated by the second image capturing source, thereby generating a new image with similar color tone as the first image generated by the first image capturing source.
摘要翻译： 色调补偿方法提供了一种简单有效的方法来补偿两种不同图像源之间的色调差异。 将来自第一图像捕获源的第一图像样本（例如静止图像）和来自第二图像捕获源的诸如视频帧的第二图像样本对准，并且将色调映射估计例程应用于两个 对齐图像。 色调映射估计例程使用与两个对准图像相关联的像素强度值直方图，并生成色调映射表。 色调映射表包括第二图像中每个强度值的转换强度值。 转换强度值是统计度量，如平均值，根据相应像素强度值直方图中的数据计算。 色调映射表应用于由第二图像捕获源产生的任何图像，从而生成与由第一图像捕获源生成的第一图像相似的色调的新图像。
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3.发明授权公开(公告)号：US08774541B2
公开(公告)日：2014-07-08
申请号：US12265653
申请日：2008-11-05
CPC分类号： H04N19/14 , H04N19/105 , H04N19/117 , H04N19/176 , H04N19/593
摘要： A method and apparatus for adaptive interpolation filtering for image compression is disclosed. The method includes determining an activity measure associated with a set of pixels neighboring a pixel undergoing intraframe prediction or a distance measure between at least one pixel in the set of pixels and the pixel undergoing intraframe prediction, and selecting a filter for filtering at least a portion of the set of pixels in accordance with the at least one of the activity measure or the distance measure.
摘要翻译： 公开了一种用于图像压缩的自适应插值滤波的方法和装置。 所述方法包括：确定与经历帧内预测的像素相邻的像素集相关联的活动度量，或者在所述像素集合中的至少一个像素与进行帧内预测的像素之间的距离测量，以及选择用于对至少一部分进行滤波的滤波器 根据活动度量或距离度量中的至少一个来生成像素集合。
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公开(公告)号：US20100322597A1
公开(公告)日：2010-12-23
申请号：US12820659
申请日：2010-06-22
CPC分类号： H04N19/90 , H04N19/115 , H04N19/119 , H04N19/136 , H04N19/15 , H04N19/176 , H04N19/182 , H04N19/184 , H04N19/46 , H04N19/593
摘要： Compression of graphics images and videos includes partitioning an image into blocks, determining the number of bitplanes for encoding each block, encoding the block by grouping pixel values so that within each group, the pixel values are the same or similar, sending the number of bitplanes, sending the number of groups and the pixel value of each group and sending a signal for each pixel to indicate the group for that pixel, as well as using leftover bits from a bit budget for sending refinement bits for pixels.
摘要翻译： 图形图像和视频的压缩包括将图像划分成块，确定用于编码每个块的位平面的数量，通过对像素值进行分组对块进行编码，使得在每个组内，像素值相同或相似，发送位板数 发送组的数量和每个组的像素值，并且发送用于每个像素的信号以指示该像素的组，以及使用来自位预算的剩余位来发送用于像素的细化位。
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5.发明申请DUAL-MODE COMPRESSION OF IMAGES AND VIDEOS FOR RELIABLE REAL-TIME TRANSMISSION 有权图像的双模式压缩和可靠的实时传输视频公开(公告)号：US20100309984A1
公开(公告)日：2010-12-09
申请号：US12792408
申请日：2010-06-02
摘要： Dual-mode compression of images/videos for reliable real-time transmission includes a scalable block-based video compression. The method provides graceful quality degradations in case of channel bandwidth changes. Prediction for encoding is avoided, and the process is less complex with less memory requirements. The method involves processing each block independently with the advantage that errors are not able to propagate beyond current block boundaries. Two different encoding modes are used, natural image coding for acquired images and graphics coding for computer generated images. The proper encoding mode is chosen by comparing performance of the two modes for a particular block to be encoded. An embedded bitstream is generated by the encoder in accordance to the available channel bandwidth.
摘要翻译： 用于可靠实时传输的图像/视频的双模式压缩包括可扩展的基于块的视频压缩。 该方法在频道带宽变化的情况下提供优雅的质量下降。 避免编码的预测，并且该过程不太复杂，存储器要求较少。 该方法包括独立地处理每个块，其优点是错误不能传播超出当前块边界。 使用两种不同的编码模式，采集图像的自然图像编码和计算机生成的图像的图形编码。 通过比较要编码的特定块的两种模式的性能来选择适当的编码模式。 嵌入式比特流由编码器根据可用信道带宽生成。
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公开(公告)号：US20100246675A1
公开(公告)日：2010-09-30
申请号：US12414256
申请日：2009-03-30
IPC分类号： H04N11/04
CPC分类号： H04N19/97 , H04N19/105 , H04N19/11 , H04N19/134 , H04N19/176 , H04N19/593 , H04N19/61
摘要： Method and apparatus for intra-prediction in a video encoder are described. An aspect relates to a method of intra-prediction for a group of samples in an image being coded. In some examples, the method includes: defining a target template for the group of samples; comparing the target template with affine transformations of candidate templates within a search area of the image; identifying at least one matching template of the candidate templates as matching the target template; determining a candidate group of samples based on the at least one matching template; and coding the group of samples using the candidate group of samples as a predictor.
摘要翻译： 描述视频编码器中帧内预测的方法和装置。 一方面涉及正在编码的图像中的一组样本的帧内预测方法。 在一些示例中，该方法包括：定义该组样本的目标模板; 将目标模板与图像的搜索区域内的候选模板的仿射变换进行比较; 将所述候选模板的至少一个匹配模板识别为匹配所述目标模板; 基于所述至少一个匹配模板确定候选样本组; 并且使用候选样本组来编码样本组作为预测器。
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7.发明申请公开(公告)号：US20100111431A1
公开(公告)日：2010-05-06
申请号：US12265653
申请日：2008-11-05
CPC分类号： H04N19/14 , H04N19/105 , H04N19/117 , H04N19/176 , H04N19/593
摘要： A method and apparatus for adaptive interpolation filtering for image compression is disclosed. The method includes determining an activity measure associated with a set of pixels neighboring a pixel undergoing intraframe prediction or a distance measure between at least one pixel in the set of pixels and the pixel undergoing intraframe prediction, and selecting a filter for filtering at least a portion of the set of pixels in accordance with the at least one of the activity measure or the distance measure.
摘要翻译： 公开了一种用于图像压缩的自适应插值滤波的方法和装置。 所述方法包括：确定与经历帧内预测的像素相邻的像素集相关联的活动度量，或者在所述像素集合中的至少一个像素与进行帧内预测的像素之间的距离测量，以及选择用于对至少一部分进行滤波的滤波器 根据活动度量或距离度量中的至少一个来生成像素集合。
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8.发明申请METHOD AND APPARATUS FOR HIERARCHICAL BI-DIRECTIONAL INTRA-PREDICTION IN A VIDEO ENCODER 有权视频编码器中分层双向预测的方法与装置公开(公告)号：US20100246672A1
公开(公告)日：2010-09-30
申请号：US12415901
申请日：2009-03-31
IPC分类号： H04N7/32
CPC分类号： H04N19/593 , H04N19/105 , H04N19/176 , H04N19/46 , H04N19/61
摘要： Method and apparatus for hierarchical bi-directional intra-prediction in a video encoder is described. In some examples, initial reference blocks are selected in an image. Sets of blocks in the image are predicted successively over a plurality of stages based on a respectively plurality of templates, each of the plurality of templates including reference blocks selected from at least one of: the initial reference blocks; or previously encoded and reconstructed blocks of the image. The image is encoded in the video encoder using the initial reference blocks and the sets of blocks as predicted.
摘要翻译： 描述了视频编码器中分级双向帧内预测的方法和装置。 在一些示例中，在图像中选择初始参考块。 基于分别多个模板，在多个级中连续地预测图像中的块的集合，所述多个模板中的每一个包括从以下各项中的至少一个中选择的参考块：初始参考块; 或先前编码和重构的图像块。 图像在视频编码器中使用初始参考块和预测的块组进行编码。
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9.发明授权Method of compression of digital images using a fixed number of bits per block 有权使用每个块固定位数来压缩数字图像的方法公开(公告)号：US08634668B2
公开(公告)日：2014-01-21
申请号：US13035060
申请日：2011-02-25
CPC分类号： H04N19/34 , H04N19/132 , H04N19/152 , H04N19/184 , H04N19/593 , H04N19/90
摘要： A method of compression of digital images using a fixed number of bits per block is described. Intra-coding is used for lossless compression of digital images. The image is partitioned into blocks with the same size. The encoder generates a fixed and predetermined number of bits for each block. The encoding process includes gamma conversion applied to the input image to generate data. Additional stages include prediction, quantization, DPCM, entropy coding and refinement.
摘要翻译： 描述了使用每个块固定位数来压缩数字图像的方法。 内部编码用于数字图像的无损压缩。 图像被分割成具有相同大小的块。 编码器为每个块生成固定和预定数量的位。 编码处理包括应用于输入图像的伽马转换以产生数据。 附加阶段包括预测，量化，DPCM，熵编码和细化。
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10.发明授权Method and apparatus for hierarchical bi-directional intra-prediction in a video encoder 有权视频编码器中分级双向帧内预测的方法和装置公开(公告)号：US08363722B2
公开(公告)日：2013-01-29
申请号：US12415901
申请日：2009-03-31
CPC分类号： H04N19/593 , H04N19/105 , H04N19/176 , H04N19/46 , H04N19/61
摘要： Method and apparatus for hierarchical bi-directional intra-prediction in a video encoder is described. In some examples, initial reference blocks are selected in an image. Sets of blocks in the image are predicted successively over a plurality of stages based on a respectively plurality of templates, each of the plurality of templates including reference blocks selected from at least one of: the initial reference blocks; or previously encoded and reconstructed blocks of the image. The image is encoded in the video encoder using the initial reference blocks and the sets of blocks as predicted.
摘要翻译： 描述了视频编码器中分级双向帧内预测的方法和装置。 在一些示例中，在图像中选择初始参考块。 基于分别多个模板，在多个级中连续地预测图像中的块的集合，所述多个模板中的每一个包括从以下各项中的至少一个中选择的参考块：初始参考块; 或先前编码和重构的图像块。 图像在视频编码器中使用初始参考块和预测的块组进行编码。
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