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    • 11. 发明申请
    • METHODS AND SYSTEMS FOR COLOR CORRECTION OF 3D IMAGES
    • 3D图像颜色校正的方法和系统
    • US20100290697A1
    • 2010-11-18
    • US12311839
    • 2006-10-21
    • Ana B. BenitezDong-Qing ZhangJames A. Fancher
    • Ana B. BenitezDong-Qing ZhangJames A. Fancher
    • G06K9/00H04N13/02H04N13/04
    • G06T15/20G06T15/50
    • A system and method for color correction of 3D images including at least two separate image streams captured for a same scene include determining three-dimensional properties of at least a portion of a selected image stream, the three-dimensional properties including light and surface reflectance properties, surface color, reflectance properties, scene geometry and the like. A look of the portion of the selected image stream is then modified by altering the value of at least one of the determined three-dimensional properties and, in one embodiment, applying image formation theory. The modifications are then rendered in an output 3D picture either automatically and/or according to user inputs. In various embodiments, corrections made to the selected one of the at least two image streams can be automatically applied to the other of the image streams.
    • 包括为相同场景捕获的至少两个分开的图像流的3D图像的颜色校正的系统和方法包括确定所选图像流的至少一部分的三维特性,包括光和表面反射特性 ,表面颜色,反射性,场景几何等。 然后通过改变所确定的三维属性中的至少一个的值,并且在一个实施例中应用图像形成理论来修改所选图像流的部分的外观。 然后,这些修改自动地和/或根据用户输入在输出3D图像中呈现。 在各种实施例中,对所选择的至少两个图像流中的一个图像流进行的校正可被自动地应用于另一个图像流。
    • 12. 发明申请
    • Filling holes in depth maps
    • 在深度图填充孔
    • US20100208994A1
    • 2010-08-19
    • US12658464
    • 2010-02-09
    • Ning YaoIzzat IzzatTao ZhangDong-Qing Zhang
    • Ning YaoIzzat IzzatTao ZhangDong-Qing Zhang
    • G06K9/34
    • G06T5/005G06T7/11G06T7/162G06T2207/10024G06T2207/10028
    • Various implementations relate to improving depth maps. This may be done, for example, by identifying bad depth values and modifying those values. The values may represent, for example, holes and/or noise. According to a general aspect, a segmentation is determined based on an intensity image. The intensity image is associated with a corresponding depth image that includes depth values for corresponding locations in the intensity image. The segmentation is applied to the depth image to segment the depth image into multiple regions. A depth value is modified in the depth image based on the segmentation. A two-stage iterative procedure may be used to improve the segmentation and then modify bad depth values in the improved segmentation, and iterating until a desired level of smoothness is achieved. Both stages may be based, for example, on average depth values in a segment.
    • 各种实现涉及改进深度图。 这可以通过例如识别不良深度值和修改这些值来完成。 这些值可以表示例如孔和/或噪声。 根据一般方面,基于强度图像来确定分割。 强度图像与包括强度图像中相应位置的深度值的对应深度图像相关联。 分割应用于深度图像,将深度图像分割成多个区域。 基于分割,在深度图像中修改深度值。 可以使用两阶段迭代程序来改进分割,然后在改进的分割中修改不良深度值,并且迭代直到实现所需的平滑度。 这两个阶段可以基于例如一段中的平均深度值。
    • 18. 发明申请
    • DECODING OF THE LINK TO A REFERENCE BLOCK IN VIDEO COMPRESSION BY IMAGE CONTENT BASED SEARCH AND RANKING
    • 基于图像内容搜索和排序的视频压缩中参考块的链接解码
    • US20130272407A1
    • 2013-10-17
    • US13821436
    • 2011-09-09
    • Dong-Qing Zhang
    • Dong-Qing Zhang
    • H04N7/30
    • H04N19/105H04N19/13H04N19/147H04N19/176H04N19/44H04N19/46H04N19/51H04N19/593H04N19/60H04N19/61H04N19/615H04N19/91
    • Method and apparatus are provided for efficient reference data decoding for video compression by image content based search and ranking. An apparatus includes an entropy decoder for respectively entropy decoding an encoded respective rank number for each of a plurality of candidate reference blocks with respect to a current block to be decoded to obtain a decoded respective rank number there for. The encoded respective rank number is in place of and representative of respective reference data for each of the plurality of candidate reference blocks With respect to the current block. The apparatus further includes an inverse rank transformer for respectively transforming the decoded respective rank number for each of the plurality of candidate reference blocks with respect to the current block into the respective reference data there for based on a context feature of the current block with respect to the context feature of each of the plurality of candidate reference blocks.
    • 提供了通过基于图像内容的搜索和排名的用于视频压缩的有效参考数据解码的方法和装置。 一种装置包括熵解码器,用于相对于要解码的当前块分别熵解码多个候选参考块中的每一个的编码的相应秩号,以获得其中解码的相应等级数。 相对于当前块,编码的相应秩号代替并表示多个候选参考块中的每一个的相应参考数据。 所述装置还包括逆秩变换器,用于基于当前块的上下文特征相对于当前块分别将针对当前块的多个候选参考块中的每一个的解码的相应秩号变​​换为相应的参考数据, 多个候选参考块中的每一个的上下文特征。
    • 19. 发明申请
    • METHODS AND APPARATUS FOR PRUNING DECISION OPTIMIZATION IN EXAMPLE-BASED DATA PRUNING COMPRESSION
    • 用于在基于示例的数据预处理压缩中进行决策优化的方法和装置
    • US20130170544A1
    • 2013-07-04
    • US13821393
    • 2011-09-09
    • Qiang HaoDong-Qing Zhang
    • Qiang HaoDong-Qing Zhang
    • H04N7/26
    • H04N19/85H04N19/132H04N19/147H04N19/176H04N19/19H04N19/46H04N19/59
    • Method and apparatus for encoding a picture in a video sequence are disclosed. An apparatus includes a patch library creator for creating a first patch library from an original version of the picture and a second patch library from a reconstructed version of the picture. Each of the libraries includes a plurality of high resolution replacement patches for replacing one or more pruned blocks during a recovery of a pruned version of the picture. A pruner generates the pruned version from the first patch library, and decides whether to respectively replace original blocks with pruned blocks responsive to a comparison between a first rate-distortion estimate and a second rate-distortion estimate. The estimates are based on both a distortion component and a bitrate component. A metadata generator generates metadata from the second patch library. The rnetadata is for recovering the pruned version. An encoder encodes the pruned version and the metadata.
    • 公开了一种用于对视频序列中的图像进行编码的方法和装置。 一种装置包括补丁库创建器,用于从图像的原始版本创建第一补丁库,以及从图像的重构版本创建第二补丁库。 每个库包括多个高分辨率替换补丁,用于在恢复修剪版本的图片期间替换一个或多个修剪的块。 修剪器从第一补丁库生成修剪版本,并且响应于第一速率失真估计和第二速率失真估计之间的比较,决定是否分别用修剪的块替换原始块。 估计基于失真分量和比特率分量。 元数据生成器从第二个补丁库生成元数据。 rnetadata用于恢复修剪版本。 编码器对修剪的版本和元数据进行编码。
    • 20. 发明申请
    • METHODS AND APPARATUS FOR ENCODING VIDEO SIGNALS USING MOTION COMPENSATED EXAMPLE-BASED SUPER-RESOLUTION FOR VIDEO COMPRESSION
    • 使用运动补偿示例的超分辨率编码视频信号进行视频压缩的方法和装置
    • US20130163673A1
    • 2013-06-27
    • US13820901
    • 2011-09-09
    • Dong-Qing ZhangMithun George JacobSitaram Bhagavathy
    • Dong-Qing ZhangMithun George JacobSitaram Bhagavathy
    • H04N7/26
    • H04N19/85H04N19/132H04N19/14H04N19/176H04N19/44H04N19/46H04N19/587H04N19/61
    • Methods and apparatus are provided for encoding video signals using motion compensated example-based super-resolution for video compression. An apparatus includes a motion parameter estimator for estimating motion parameters for an input video sequence having motion. The input video sequence includes a plurality of pictures. The apparatus also includes an image warper for performing a picture warping process that transforms one or more of the plurality of pictures to provide a static version of the input video sequence by reducing an amount of the motion based on the motion parameters. The apparatus further includes an example-based super-resolution processor for performing example-based super-resolution to generate one or more high-resolution replacement patch pictures from the static version of the video sequence. The one or more high-resolution replacement patch pictures are for replacing one or more low-resolution patch pictures during a reconstruction of the input video sequence.
    • 提供了使用用于视频压缩的基于运动补偿的基于示例的超分辨率对视频信号进行编码的方法和装置。 一种装置包括用于估计具有运动的输入视频序列的运动参数的运动参数估计器。 输入视频序列包括多个图像。 该装置还包括图像整形器,用于执行图像变形处理,其通过基于运动参数减少运动量来变换多个图像中的一个或多个以提供输入视频序列的静态版本。 该装置还包括基于示例的超分辨率处理器,用于执行基于示例的超分辨率以从视频序列的静态版本生成一个或多个高分辨率替换补丁图像。 一个或多个高分辨率替换贴片图片用于在重建输入视频序列期间替换一个或多个低分辨率贴片图像。