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1. 发明授权

EP2938075B1 DEBLOCKING FILTERING 有权转让
公开(公告)号：EP2938075B1
公开(公告)日：2018-12-05
申请号：EP15171919.2
申请日：2011-10-06
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： Norkin, Andrey , Sjöberg, Rickard , Andersson, Kenneth
IPC分类号： H04N19/176 , H04N19/61 , H04N19/14 , H04N19/82 , H04N19/86 , H04N19/117 , H04N19/182
CPC分类号： H04N19/865 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/86
摘要： Blocking artifacts at a block boundary (1) between a block (10) and a neighboring block (20) in a video frame are reduced by calculating an offset based on pixel values of pixels (11, 13) in a line (12) of pixels (11, 13, 15, 17) in the block (10) and based on pixel values of pixels (21, 23) in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block (20). The offset is added to the pixel value of the pixel (11) closest to the block boundary (1) in the line (12) of pixels (11, 13, 15, 17) and is subtracted from the pixel value of the pixel (21) closest to the block boundary (1) in the corresponding line (22) of pixels (21, 23, 25, 27). The resulting deblocking filter has good low-pass characteristics and is efficient for reducing blocking artifact.

2. 发明授权

EP2396966B1 BLOCK NOISE DETECTION AND FILTERING 有权转让
公开(公告)号：EP2396966B1
公开(公告)日：2018-09-05
申请号：EP10741672.9
申请日：2010-02-10
申请人： Lattice Semiconductor Corporation
发明人： ADAMS, Dale, Richard , THOMPSON, Laurence, A.
IPC分类号： H04N7/24 , H04N5/21 , H04N19/176 , H04N19/14 , H04N19/80 , H04N19/117 , H04N19/86 , G06T5/10 , G06T5/00
CPC分类号： G06T5/10 , G06T5/002 , G11B20/00007 , H04N19/117 , H04N19/136 , H04N19/865
摘要： Systems and methods for block noise detection and filtering are disclosed. One embodiment includes, computing difference magnitudes in pixel values for adjacent pixels in the image. The difference magnitudes can include horizontal difference magnitudes for horizontally adjacent pixels and vertical difference magnitudes for vertically adjacent pixels. One embodiment further includes using normalized sums of the difference magnitudes to determine a set of noise characteristics of the block noise and a set of image characteristics of the image and configuring inputs to the block noise filter using the set of noise and image characteristics.

3. 发明公开

EP3293975A1 DEVICE AND METHOD FOR ENTROPY ENCODING AND DECODING 审中-公开
标题翻译： ENTROPY编码和解码的装置和方法
公开(公告)号：EP3293975A1
公开(公告)日：2018-03-14
申请号：EP16844580.7
申请日：2016-07-25
申请人： Samsung Electronics Co., Ltd.
发明人： PIAO, Yin-ji , CHOI, Ki-ho
IPC分类号： H04N19/91 , H04N19/105 , H04N19/86 , H04N19/119 , H04N19/44
CPC分类号： H04N19/91 , H04N19/105 , H04N19/119 , H04N19/13 , H04N19/157 , H04N19/18 , H04N19/44 , H04N19/70 , H04N19/865
摘要： An entropy encoding device and method, and an entropy decoding device and method are disclosed. The entropy encoding method comprises the steps of: dividing a transform unit into a plurality of zones, and dividing each of the plurality of zones into sub zones; setting, as the first value, the value of the last zone flag, in which a sub zone including a valid transform coefficient among the plurality of zones is included, and setting, as the second value, the value of a zone flag of the remaining zones; setting, as the first value, the value of a sub zone flag of the divided sub zones having the valid transform coefficient, and setting, as the second value, a value of a sub zone flag of the divided sub zones which do not include the valid transform coefficient; determining a preset coefficient coding scheme among a plurality of coefficient coding schemes on the basis of the zone flag and the sub zone flag; encoding a coefficient included in a sub zone on the basis of the determined coefficient coding scheme; and transmitting data on the zone flag, the sub zone flag, and the encoded coefficient.
摘要翻译：公开了熵编码设备和方法，以及熵解码设备和方法。熵编码方法包括以下步骤：将变换单元划分成多个区域，并将多个区域中的每一个划分为子区域; 将包括多个区域中的包含有效变换系数的子区域的最后区域标志的值设置为第一值，并且将剩余的区域标志的值设置为第二值区; 将具有有效变换系数的分割子区域的子区域标志的值设置为第一值，并且将不包括该分割子区域的子区域标志的值设置为第二值有效变换系数; 基于所述区域标志和所述子区域标志，确定多个系数编码方案中的预设系数编码方案; 基于所确定的系数编码方案对包括在子区中的系数进行编码; 并在区域标志，子区域标志和编码系数上发送数据。

4. 发明公开

EP3231179A1 HIGH PARALLELISM DEPENDENCY PATTERN FOR GPU BASED DEBLOCK 审中-公开
标题翻译：基于GPU的DEBLOCK高并行性依赖模式
公开(公告)号：EP3231179A1
公开(公告)日：2017-10-18
申请号：EP15867163.6
申请日：2015-11-02
申请人： Intel Corporation
发明人： WU, Haihua , GOULD, Julia A.
IPC分类号： H04N19/44 , H04N19/176
CPC分类号： H04N19/436 , H04N19/117 , H04N19/82 , H04N19/86 , H04N19/865
摘要： A thread dependency scheme may significantly reduce the dependency penalty and improve the parallelism efficiency in some embodiments in video compression techniques with relatively high dependencies, such as VP9. One fundamental feature is to split an individual large kernel into multiple, less dependent, smaller kernels, thereby significantly increasing the number of software threads that can potentially run in parallel. Another feature is to define the larger number of thread dependencies (superset of all the dependency candidates for each thread), with the specific thread's spatial position and associated context, and mask out some of the unnecessary thread dependencies.
摘要翻译：在具有较高依赖性的视频压缩技术（例如VP9）中的一些实施例中，线程依赖性方案可以显着减少依赖性惩罚并提高并行性效率。一个基本特征是将单个大内核分割成多个较少依赖的较小内核，从而显着增加可能并行运行的软件线程的数量。另一个功能是定义大量的线程依赖关系（每个线程的所有依赖关系候选的超集），特定线程的空间位置和关联的上下文，并屏蔽掉一些不必要的线程依赖关系。

5. 发明公开

EP2571269A4 IMAGE-FILTERING METHOD AND APPARATUS, AND ENCODING/DECODING METHOD AND APPARATUS USING SAME 有权
标题翻译：图像滤波方法和设备以及加密/解密方法和装置
公开(公告)号：EP2571269A4
公开(公告)日：2015-10-21
申请号：EP11780820
申请日：2011-05-12
申请人： SK TELECOM CO LTD
发明人： SONG JINHAN , LIM JEONGYEON , LEE YUNGLYUL , MOON JOOHEE , KIM HAEKWANG , JEON BYEUNGWOO , HAN JONGKI , KIM DAEYEON , HONG SUNGWOOK
IPC分类号： H04N19/86 , H04N19/61
CPC分类号： H04N19/117 , H04N19/107 , H04N19/119 , H04N19/12 , H04N19/136 , H04N19/157 , H04N19/176 , H04N19/44 , H04N19/61 , H04N19/80 , H04N19/82 , H04N19/86 , H04N19/865

6. 发明公开

EP2229780A4 IN-LOOP FIDELITY ENHANCEMENT FOR VIDEO COMPRESSION 审中-公开
标题翻译：在循环播放增益压缩视频内容
公开(公告)号：EP2229780A4
公开(公告)日：2015-08-05
申请号：EP08859579
申请日：2008-12-12
申请人： MEDIATEK INC
发明人： LEI SHAW MIN , HUANG YU WEN , GUO XUN
IPC分类号： H04N19/82 , H04N19/86
CPC分类号： H04N19/82 , H04N19/46 , H04N19/61 , H04N19/86 , H04N19/865 , H04N19/91 , H04N19/96
摘要： An encoder for receiving a video frame and performing encoding processes to generate an encoded bitstream includes: a fidelity enhancement block, for performing a fidelity enhancement technique on the video frame utilizing a quad-tree partition, and generating fidelity enhancement information including a parameter associated with the quad-tree partition structure; and an entropy coding block, coupled to the fidelity enhancement block, for encoding the fidelity enhancement information, and embedding the encoded fidelity enhancement information into the encoded bitstream.

7. 发明公开

EP2786342A1 TEXTURE MASKING FOR VIDEO QUALITY MEASUREMENT 有权
标题翻译：纹理面具VIDEOQUALTITÄTSMESSUNG
公开(公告)号：EP2786342A1
公开(公告)日：2014-10-08
申请号：EP12853853.5
申请日：2012-04-23
申请人： Thomson Licensing
发明人： ZHANG, Fan , XIE, Kai , JIANG, Wenfei , CHEN, Zhibo
IPC分类号： G06T5/00
CPC分类号： G06T7/40 , G06T7/0002 , G06T7/13 , G06T7/44 , G06T2207/10016 , G06T2207/20028 , G06T2207/30168 , H04N19/117 , H04N19/14 , H04N19/154 , H04N19/162 , H04N19/172 , H04N19/865
摘要： A particular implementation decomposes an image into a structure component and a texture component. An edge strength map is calculated for the structure component, and a texture strength map is calculated for the texture component. Using the edge strength and the texture strength, texture masking weights are calculated. The stronger the texture strength is, or the weaker the edge strength is, the more distortion can be tolerated by human eyes, and thus, the smaller the texture masking weight is. The local distortions are then weighted by the texture masking weights to generate an overall distortion level or an overall quality metric.

8. 发明公开

EP2769543A1 METHOD OF AND APPARATUS FOR COMPRESSION ENCODING A PICTURE IN A PICTURE SEQUENCE 审中-公开
标题翻译：方法和设备的压缩编码图像中的图像序列
公开(公告)号：EP2769543A1
公开(公告)日：2014-08-27
申请号：EP11785380.4
申请日：2011-11-14
申请人： Telefonaktiebolaget LM Ericsson (Publ)
发明人： BOCK, Alois , CLEWER, David , AMARA, Tarek
IPC分类号： H04N7/26
CPC分类号： H04N19/00169 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/119 , H04N19/126 , H04N19/146 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/46 , H04N19/70 , H04N19/865
摘要： The present invention relates to a method of and apparatus for compression encoding of a picture in a picture sequence. In particular, the invention relates to a method of and apparatus for compression encoding of a picture in a picture sequence so as to maintain a good picture quality while providing compression coding and decoding with low latency. The invention provides a method of compression encoding a picture in a picture sequence in which the pictures in the picture sequence are coded as prediction coded pictures with a single reference picture and have at least two macroblock sets. One set is a refresh set in which the macroblocks are intra-picture coded. The decoded compression coded picture information used for compression coding picture information is decoded without use of a de-blocking filter.

9. 发明公开

EP2754295A1 LOW COMPLEX DEBLOCKING FILTER DECISIONS 有权转让
标题翻译： FILTERENTSCHEIDUNGEN MIT GERINGER KOMPLEXENTBLOCKIERUNG
公开(公告)号：EP2754295A1
公开(公告)日：2014-07-16
申请号：EP12769971.8
申请日：2012-09-06
申请人： Panasonic Corporation
发明人： NARROSCHKE, Matthias , ESENLIK, Semih , WEDI, Thomas
IPC分类号： H04N7/26
CPC分类号： H04N19/865 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/136 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/82 , H04N19/86
摘要： The present invention relates to deblocking filtering, which may be advantageously applied for block-wise encoding and decoding of images or video signals. In particular, the present invention relates to an improved memory management in an automated decision on whether to apply or skip deblocking filtering for a block and to selection of the deblocking filter. The decision is performed on the basis of a segmentation of blocks in such a manner that memory usage is optimized. Preferably, the selection of appropriate deblocking filters is improved so as to reduce computational expense.
摘要翻译：本公开涉及去块滤波，其可以有利地应用于图像或视频信号的块式编码和解码。特别地，本公开涉及在对块应用或跳过去块滤波以及去块滤波器的选择的自动决定中的改进的存储器管理。基于块的分割来执行该决定，使得存储器使用被优化。优选地，改进适当的去块滤波器的选择，以便减少计算费用。

10. 发明公开

EP2534839A4 METHOD FOR PROCESSING IMAGE 审中-公开
标题翻译：图像处理
公开(公告)号：EP2534839A4
公开(公告)日：2014-06-11
申请号：EP10845426
申请日：2010-02-11
申请人： THOMSON LICENSING
发明人： LIU DEBING , CHEN ZHIBO , GU XIAODONG , XU FENG
IPC分类号： H04N19/117 , G06K9/36 , G06T7/00 , G06T7/40 , H04N19/159 , H04N19/176 , H04N19/86
CPC分类号： G06T7/40 , G06T2207/10004 , G06T2207/10016 , G06T2207/20021 , G06T2207/30168 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/86 , H04N19/865
摘要： A method for processing an image divided into blocks of pixels is disclosed. The method comprises the steps of: detecting, for each block, a largest sub-block whose pixels have an equal luminance value; identifying, for each block, if the detected largest sub-block is or is not a natural texture; determining, for each block, a block blockiness level on the basis of the number of pixels within the detected largest sub-block and on the basis of the identification step; and processing the image on the basis of the block blockiness levels.

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