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1. 发明公开

EP3258694A1 INTRA-FRAME CODEC METHOD, CODER AND DECODER 审中-公开
标题翻译：帧内编解码方法，编码器和解码器
公开(公告)号：EP3258694A1
公开(公告)日：2017-12-20
申请号：EP15883829.2
申请日：2015-11-30
申请人： Huawei Technologies Co. Ltd.
发明人： ZENG, Bing , CHEN, Chen , ZHAO, Yin , YANG, Haitao , ZHU, Shuyuan
IPC分类号： H04N19/61 , H04N19/122 , H04N19/124
CPC分类号： H04N19/159 , H04N19/105 , H04N19/122 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/59 , H04N19/593 , H04N19/61 , H04N19/82
摘要： Embodiments of the present invention provide an intra-frame encoding method, an intra-frame decoding method, an encoder, and a decoder. The intra-frame encoding method includes: obtaining reference pixel values of a current picture block; obtaining a predicted value of a first-type pixel in the current picture block according to the reference pixel values of the current picture block by using an intra-frame prediction algorithm, where the current picture block includes the first-type pixel and a second-type pixel, and the second-type pixel is a pixel in the current picture block except the first-type pixel; obtaining residual values of the first-type pixel according to the predicted value of the first-type pixel and an original pixel value of the first-type pixel; obtaining transform coefficients according to the residual values of the first-type pixel; quantizing the transform coefficients to obtain quantized transform coefficients; reconstructing the first-type pixel according to the quantized transform coefficients and the predicted value of the first-type pixel, to obtain a reconstructed value of the first-type pixel; and obtaining a reconstructed value of the second-type pixel according to the reconstructed value of the first-type pixel by using an interpolation method. In the embodiments of the present invention, flexible encoding can be implemented, and encoding efficiency can be improved.
摘要翻译：本发明的实施例提供了一种帧内编码方法，一种帧内解码方法，一种编码器和一种解码器。该帧内编码方法包括：获取当前图片块的参考像素值; 通过帧内预测算法，根据当前图像块的参考像素值，获取当前图像块中第一类像素的预测值，其中，当前图像块包括第一类像素和第二类像素，所述第二类像素为所述当前图像块中除所述第一类像素以外的像素; 根据所述第一类像素的预测值和所述第一类像素的原始像素值，获得所述第一类像素的残差值; 根据所述第一类像素的残差值获得变换系数; 量化变换系数以获得量化的变换系数; 根据量化变换系数和第一类像素的预测值重建第一类像素，得到第一类像素的重构值; 以及利用插值方法根据第一类像素的重构值获得第二类像素的重构值。在本发明的实施例中，可以实现灵活的编码，并且可以提高编码效率。

2. 发明公开

EP3300361A1 DEBLOCKING METHOD AND DEBLOCKING FILTER 有权
标题翻译：去块方法和去块滤波器
公开(公告)号：EP3300361A1
公开(公告)日：2018-03-28
申请号：EP16806532.4
申请日：2016-03-02
申请人： Huawei Technologies Co. Ltd.
发明人： ZENG, Bing , MIAO, Zexiang , CHEN, Chen , ZHU, Shuyuan , ZHAO, Yin , YANG, Haitao
IPC分类号： H04N19/102 , H04N19/117 , H04N19/82 , H04N19/86
CPC分类号： H04N19/86 , H04N19/102 , H04N19/117 , H04N19/137 , H04N19/176 , H04N19/82
摘要： Embodiments of the present invention provide a deblocking filtering method and a deblocking filter. The method includes: determining, according to a current pixel value of a to-be-filtered pixel in a picture block and pixel values of pixels in a first neighbouring partition of the to-be-filtered pixel, a first filtering offset value of the to-be-filtered pixel; performing prediction on the pixel value of the to-be-filtered pixel according to pixel values of pixels in a second neighbouring partition of the to-be-filtered pixel to obtain a prediction value of filtered value of the to-be-filtered pixel; and determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value. In the embodiments of the present invention, the actual filtered value is obtained according to the additional prediction value of filtered value in combination with the current pixel value and the first filtering offset value. In this way, overall waveform smoothness of a filtered signal can be improved.
摘要翻译：本发明的实施例提供去块滤波方法和去块滤波器。该方法包括：根据图像块中的待滤波像素的当前像素值和待滤波像素的第一相邻分区中的像素的像素值，确定所述待滤波像素的第一滤波偏移值待过滤像素; 根据所述待滤波像素的第二相邻分区中的像素的像素值对所述待滤波像素的像素值进行预测，得到所述待滤波像素的滤波值的预测值; 根据当前像素值，第一滤波偏移值和滤波值的预测值，确定待滤波像素的实际滤波值。在本发明实施例中，根据滤波值附加预测值结合当前像素值和第一滤波偏移值，得到实际滤波值。以这种方式，可以改善滤波信号的整体波形平滑度。

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