公开(公告)号：US20110129020A1

公开(公告)日：2011-06-02

申请号：US12737662

申请日：2008-08-08

申请人： Zhen Li ,  Adeel Abbas ,  Xiaoan Lu ,  Cristin Gomila

发明人： Zhen Li ,  Adeel Abbas ,  Xiaoan Lu ,  Cristin Gomila

IPC分类号： H04N7/12

CPC分类号： G06T7/0002 ,  G06T5/002 ,  G06T2207/10016 ,  G06T2207/20032 ,  H04N19/115 ,  H04N19/124 ,  H04N19/136 ,  H04N19/152 ,  H04N19/154 ,  H04N19/17 ,  H04N19/176 ,  H04N19/61 ,  H04N19/86

摘要： A method and apparatus for detecting banding artifacts in digital images and video contents. The method operates to (i) find the locations of the banding artifacts, (ii) determine the strength of the banding artifact per block, and (iii) determine overall banding artifact strength per picture. The banding artifact detection and strength assignment is done by first finding areas that are prone to banding artifact and then considering the local characteristics of the area to reduce the false detection. The banding artifact strength of a picture is determined by considering the size and the strength of the artifact areas in this picture as well as the artifact strength in the neighboring pictures.

摘要翻译： 一种用于检测数字图像和视频内容中的条带伪影的方法和装置。 该方法操作以（i）找到条带伪像的位置，（ii）确定每个块的条带伪像的强度，以及（iii）确定每个图像的整体条带伪影强度。 带状伪影检测和强度分配通过首先找到容易产生条带伪影的区域，然后考虑该区域的局部特征来减少错误检测。 通过考虑图像中的伪像区域的大小和强度以及相邻图像中的伪像强度来确定图像的带状伪影强度。

公开(公告)号：US20110135012A1

公开(公告)日：2011-06-09

申请号：US12737661

申请日：2008-08-08

申请人： Zhen Li ,  Adeel Abbas ,  Xiaoan Lu ,  Cristina Gomila

发明人： Zhen Li ,  Adeel Abbas ,  Xiaoan Lu ,  Cristina Gomila

IPC分类号： H04N11/02

CPC分类号： G06T5/002 ,  G06T7/0002 ,  G06T2207/10016 ,  G06T2207/20032 ,  H04N19/61 ,  H04N19/85

摘要： The present invention involves detecting dark noise artifacts in coded images and video. Locations of artifacts in compressed pictures are found. A strength of the artifact per block is determined as is an overall dark noise artifact strength for each picture. Artifact detection and strength assignment is performed by analyzing candidate areas that could be prone to this type of artifact. Multiple features such as block variance, color information, luminance levels and location of the artifact could be used in this process. Also, median filtering may be used on the identified areas to eliminate isolated areas. A final artifact parameter for each picture can be assessed based on the total number of blocks that are classified as dark noise and also the strength of each macroblock.

摘要翻译： 本发明涉及检测编码图像和视频中的暗噪声伪影。 找到压缩图片中的文物的位置。 确定每个块的伪像的强度，因为每个图像的整体暗噪声伪像强度也是如此。 通过分析可能容易受到这种类型的伪影的候选区域来执行伪像检测和强度分配。 在这个过程中可以使用诸如块方差，颜色信息，亮度水平和伪像的位置等多个特征。 此外，可以在识别的区域上使用中值滤波以消除隔离区域。 可以基于被分类为暗噪声的块的总数以及每个宏块的强度来评估每个图像的最终伪影参数。

公开(公告)号：US20120106629A1

公开(公告)日：2012-05-03

申请号：US13381538

申请日：2010-06-29

申请人： Yunfei Zheng ,  Qian Xu ,  Xiaoan Lu ,  Peng Yin ,  Joel Sole ,  Adeel Abbas

发明人： Yunfei Zheng ,  Qian Xu ,  Xiaoan Lu ,  Peng Yin ,  Joel Sole ,  Adeel Abbas

IPC分类号： H04N7/26

摘要： Methods and apparatus are provided for signaling intra prediction for large blocks for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least one large block in a picture by signaling intra prediction for the at least one large block. The intra prediction is signaled by selecting a basic coding unit size and assigning a single spatial intra partition type for the basic coding unit size. The single spatial intra partition type is selectable from among a plurality of spatial intra partition types. The at least one large block has a large block size greater than a block size of the basic coding unit. The intra prediction is hierarchical layer intra prediction and is performed for the at least one large block by at least one of splitting from the large block size to the basic coding unit size and merging from the basic coding unit size to the large block size.

摘要翻译： 提供了用于信令用于视频编码器和解码器的大块的帧内预测的方法和装置。 一种装置包括一个视频编码器，用于通过信号对至少一个大块的帧内预测来对图像中的至少一个大块编码图像数据。 通过选择基本编码单元大小并为基本编码单元大小分配单个空间内分区类型来发信号通知帧内预测。 单个空间内分区类型可从多个空间内分区类型中选择。 所述至少一个大块具有大于所述基本编码单元的块大小的大块大小。 帧内预测是分级层内预测，并且通过从大块大小分割为基本编码单元大小并从基本编码单元大小合并到大块大小中的至少一个来对至少一个大块执行。

公开(公告)号：US20120243614A1

公开(公告)日：2012-09-27

申请号：US13423671

申请日：2012-03-19

申请人： Danny Hong ,  Jill Boyce ,  Adeel Abbas

发明人： Danny Hong ,  Jill Boyce ,  Adeel Abbas

IPC分类号： H04N7/12

CPC分类号： H04N19/593 ,  H04N19/129 ,  H04N19/503 ,  H04N19/52 ,  H04N19/70

摘要： Systems and methods for video decoding include receiving at least one syntax element indicative of a block coding order (BCO); and decoding at least one block in accordance with the BCO. Systems and methods for video encoding include determining for at least one region of a picture a block coding order (BCO) different than scan order; encoding at least one syntax element indicative of the determined BCO; and encoding at least one block; wherein the availability of at least one sample for prediction in the encoding process is determined by the BCO.

摘要翻译： 用于视频解码的系统和方法包括接收指示块编码顺序（BCO）的至少一个语法元素; 以及根据BCO对至少一个块进行解码。 用于视频编码的系统和方法包括为图像的至少一个区域确定不同于扫描顺序的块编码顺序（BCO）; 编码指示所确定的BCO的至少一个语法元素; 并编码至少一个块; 其中在编码过程中用于预测的至少一个样本的可用性由BCO确定。

公开(公告)号：US20130163660A1

公开(公告)日：2013-06-27

申请号：US13533315

申请日：2012-06-26

申请人： Jill Boyce ,  Danny Hong ,  Adeel Abbas

发明人： Jill Boyce ,  Danny Hong ,  Adeel Abbas

IPC分类号： H04N7/26

CPC分类号： H04N19/33 ,  H04N19/46 ,  H04N19/82

摘要： Disclosed are techniques for loop filtering in scalable video coding/decoding. An enhancement layer decoder decodes, per sample, coding unit, slice, or other appropriate syntax structure, an indication rlssp indicative of a stage in the base layer loop filter process. Reference sample information from a base layer for inter-layer prediction is taken from the indicated stage of the base layer loop filter.

摘要翻译： 公开了可伸缩视频编码/解码中的环路滤波技术。 增强层解码器对每个样本，编码单元，切片或其他适当的语法结构解码表示基层环路滤波处理中的阶段的指示rlssp。 来自用于层间预测的基层的参考样本信息取自基层环路滤波器的指示级。