公开(公告)号：US20100322300A1

公开(公告)日：2010-12-23

申请号：US12735906

申请日：2008-03-18

申请人： Zhen Li ,  Xiaoan Lu ,  Cristina Gomilla

发明人： Zhen Li ,  Xiaoan Lu ,  Cristina Gomilla

IPC分类号： H04N11/04 ,  G06K9/00

CPC分类号： G06K9/00234 ,  G06T7/90 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30088 ,  H04N19/115 ,  H04N19/14 ,  H04N19/17 ,  H04N19/186 ,  H04N19/61

摘要： A method and apparatus for adaptive feature of interest color model parameters estimation are provided. The apparatus includes a feature of interest color model parameters estimator and a feature of interest detector. The feature of interest color model parameters estimator is for extracting at least one set of pixels from at least one image. The at least one set of pixels corresponds to a feature of interest. For each of the at least one set of pixels, the feature of interest color model parameters estimator models color components of pixels in the at least one set with statistical models, and estimates feature of interest color model parameters based on the modeled color components to obtain at least one estimated feature of interest color model. The feature of interest detector is for detecting feature of interest pixels from the at least one set of pixels using the at least one estimated feature of interest color model.

摘要翻译： 提供了一种感兴趣的颜色模型参数估计的自适应特征的方法和装置。 该装置包括感兴趣的颜色模型参数估计器的特征和感兴趣检测器的特征。 感兴趣的颜色模型参数估计器的特征是用于从至少一个图像中提取至少一组像素。 至少一组像素对应于感兴趣的特征。 对于所述至少一组像素中的每一个，感兴趣的颜色模型参数估计器使用统计模型对至少一个集合中的像素的颜色分量进行模型，并且基于所建模的颜色分量来估计感兴趣的颜色模型参数的特征，以获得 至少一个估计特征的兴趣颜色模型。 感兴趣检测器的特征是使用感兴趣的颜色模型的至少一个估计特征来检测来自至少一组像素的兴趣像素的特征。

公开(公告)号：US20100183070A1

公开(公告)日：2010-07-22

申请号：US12733149

申请日：2008-08-12

申请人： Xiaoan Lu ,  Zhen Li ,  Cristina Gomila

发明人： Xiaoan Lu ,  Zhen Li ,  Cristina Gomila

IPC分类号： H04N7/26

CPC分类号： H04N19/107 ,  H04N19/124 ,  H04N19/17 ,  H04N19/186 ,  H04N19/61

摘要： A method and apparatus are provided for improved video encoding using region of interest information. The apparatus includes an encoder for encoding a plurality of regions of a picture by determining, using region of interest detection, a respective probability that each of the plurality of regions belong to a region of interest, and adaptively controlling a respective quality of each of the plurality of regions based on a value of the respective probability.

摘要翻译： 提供了一种使用感兴趣区域信息改进视频编码的方法和装置。 该装置包括编码器，用于通过使用感兴趣区域来确定多个区域中的每一个属于感兴趣区域的各自的概率，并且自适应地控制每个区域的相应质量来对图像的多个区域进行编码 基于相应概率的值的多个区域。

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：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：US10080024B2

公开(公告)日：2018-09-18

申请号：US13697562

申请日：2011-05-13

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

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

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/157 ,  H04N19/105 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/134 ,  H04N19/61 ,  H04N19/593 ,  H04N19/12 ,  H04N19/132

CPC分类号： H04N19/157 ,  H04N19/105 ,  H04N19/12 ,  H04N19/132 ,  H04N19/134 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

摘要： Methods and apparatus are provided for intra coding a block having pixels assigned to groups. An apparatus includes a video encoder for encoding a block in a picture using intra prediction by dividing pixels within the block into at least a first group and a second group and encoding the pixels in the first group prior to encoding the pixels in the second group. A prediction for at least one of the pixels within the second group is obtained by evaluating the pixels within the first group and the second group.

公开(公告)号：US09743081B2

公开(公告)日：2017-08-22

申请号：US13382800

申请日：2010-07-07

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

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

IPC分类号： H04N19/00 ,  H04N19/117 ,  H04N19/147 ,  H04N19/46 ,  H04N19/196 ,  H04N19/174 ,  H04N19/82 ,  H04N19/86

CPC分类号： H04N19/117 ,  H04N19/147 ,  H04N19/174 ,  H04N19/196 ,  H04N19/46 ,  H04N19/82 ,  H04N19/86

摘要： Methods and apparatus are provided for collaborative partition coding for region based filters. An apparatus includes a video encoder (100) for encoding image data for a plurality of regions in a picture. The video encoder (100) includes multiple filters for filtering the image data based on region partition information for the plurality of regions. The region partition information for the plurality of regions is shared between the multiple filters.

公开(公告)号：US09628788B2

公开(公告)日：2017-04-18

申请号：US13634663

申请日：2011-03-03

申请人： Yunfei Zheng ,  Peng Yin ,  Jole Sole ,  Xiaoan Lu ,  Qian Xu

发明人： Yunfei Zheng ,  Peng Yin ,  Jole Sole ,  Xiaoan Lu ,  Qian Xu

IPC分类号： H04N19/00 ,  H04N19/56 ,  H04N19/109 ,  H04N19/52 ,  H04N19/70 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/567

CPC分类号： H04N19/109 ,  H04N19/46 ,  H04N19/513 ,  H04N19/52 ,  H04N19/521 ,  H04N19/56 ,  H04N19/567 ,  H04N19/61 ,  H04N19/70

摘要： Methods and apparatus are provided for implicit adaptive motion vector predictor selection for video encoding and decoding. The method encodes an image block using implicit adaptive motion vector predictor selection. The motion vector for encoding the block is predicted by defining a set of motion vector predictor candidates for the block based on a plurality of spatio-temporal neighboring motion vectors; and then selecting from the set a particular motion vector predictor candidate as the motion vector for encoding the bloc. The selection is made responsive to respective values for a fidelity of the spatio-temporal neighboring motion vectors.

公开(公告)号：US09510009B2

公开(公告)日：2016-11-29

申请号：US13698468

申请日：2011-05-17

申请人： Liwei Guo ,  Peng Yin ,  Yunfei Zheng ,  Joel Sole ,  Qian Xu ,  Xiaoan Lu

发明人： Liwei Guo ,  Peng Yin ,  Yunfei Zheng ,  Joel Sole ,  Qian Xu ,  Xiaoan Lu

IPC分类号： H04N19/139 ,  H04N19/44 ,  H04N19/52 ,  H04N19/70

CPC分类号： H04N19/52 ,  H04N19/139 ,  H04N19/44 ,  H04N19/567 ,  H04N19/70

摘要： Methods and apparatus are provided for adaptive motion vector candidate ordering for video encoding and decoding. An apparatus includes a video encoder for encoding a block in a picture by selecting an order of motion vector predictor candidates for the block responsive to a characteristic available at both the video encoder and a corresponding decoder. The characteristic excludes a mode in which the block is partitioned.

摘要翻译： 提供了用于视频编码和解码的自适应运动矢量候选排序的方法和装置。 一种装置包括：视频编码器，用于响应于在视频编码器和对应的解码器上可用的特性，选择图像中的块的运动矢量预测器候选的顺序来对图像中的块进行编码。 该特征排除块分割的模式。

公开(公告)号：US09020287B2

公开(公告)日：2015-04-28

申请号：US13138860

申请日：2010-03-26

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

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

IPC分类号： G06K9/36 ,  H04N19/82 ,  H04N19/159 ,  H04N19/176 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N19/117 ,  H04N19/174

CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

摘要： There are provided method and apparatus for filter parameter determination and selection responsive to variable transforms in sparsity-based de-artifact filtering. An apparatus includes an encoder for encoding picture data for at least a portion of a picture. The encoder includes a sparsity-based de-artifact filter for performing sparsity-based de-artifact filtering on the portion. One or more filter parameters for the sparsity-based de-artifact filtering are determined and selected responsive to variable transforms.

摘要翻译： 提供了响应于基于稀疏度的去神器过滤中的可变变换的滤波器参数确定和选择的方法和装置。 一种装置包括：编码器，用于编码图像的至少一部分的图像数据。 编码器包括基于稀疏度的去伪造过滤器，用于在该部分上执行基于稀疏度的去伪造过滤。 响应于可变变换确定和选择用于基于稀疏度的去伪造过滤的一个或多个过滤器参数。

公开(公告)号：US20130208806A1

公开(公告)日：2013-08-15

申请号：US13879378

申请日：2011-10-06

申请人： Yang Hu ,  Joel Sole ,  Xiaoan Lu ,  Peng Yin ,  Yunfei Zheng

发明人： Yang Hu ,  Joel Sole ,  Xiaoan Lu ,  Peng Yin ,  Yunfei Zheng

IPC分类号： H04N7/26

CPC分类号： H04N19/60 ,  H03M7/4006 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

摘要： Methods and apparatus are provided for improved entropy encoding and decoding. An apparatus includes a video encoder for encoding at least a block in a picture by transforming a residue of the block to obtain transform coefficients, quantizing the transform coefficients to obtain quantized transform coefficients, and entropy coding the quantized transform coefficients. The quantized transform coefficients are encoded using a flag to indicate that a current one of the quantized transform coefficients being processed is a last non-zero coefficient for the block having a value greater than or equal to a specified value.

摘要翻译： 提供了用于改进熵编码和解码的方法和装置。 一种装置包括一个视频编码器，用于通过对该块的残差进行变换来获得变换系数，对该变换系数进行量化以获得量化的变换系数，以及对量化的变换系数进行熵编码来对图像中的至少一个块进行编码。 使用标志对量化的变换系数进行编码，以指示正被处理的当前一个量化变换系数是具有大于或等于指定值的值的块的最后非零系数。