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1. 发明公开

EP3319317A1 VIDEO ENCODING AND DECODING METHOD AND DEVICE 有权
标题翻译：视频编码和解码方法和装置
公开(公告)号：EP3319317A1
公开(公告)日：2018-05-09
申请号：EP15899310.5
申请日：2015-07-30
申请人： Huawei Technologies Co., Ltd. , University of Science and Technology of China
发明人： CHEN, Fangdong , LIN, Sixin , LI, Houqiang , LI, Li
IPC分类号： H04N19/124 , H04N19/176 , H04N19/58 , H04N19/14 , H04N19/139 , H04N19/192
CPC分类号： H04N19/58 , H04N19/124 , H04N19/139 , H04N19/14 , H04N19/172 , H04N19/176 , H04N19/192
摘要： An image encoding and decoding method, and a video encoding and decoding method and apparatus are disclosed. The image encoding method includes: obtaining a first statistical characteristic of previous K frames of images of a video sequence; determining a first background frame; determining, according to the first statistical characteristic, a QP used for encoding the first background frame; encoding the first background frame according to the QP, to obtain a first background long-term reference frame; and encoding the (K+1) th frame of image of the video sequence to the (K+L) th frame of image of the video sequence according to the first background long-term reference frame. When encoding is performed on the (K+1) th frame of image of the video sequence to the (K+L) th frame of image of the video sequence, the used QP for encoding the background long-term reference frame is determined according to the first statistical characteristic related to video content of the previous K frames of images. This improves overall video encoding quality.
摘要翻译：公开了一种图像编码和解码方法，以及一种视频编码和解码方法和装置。该图像编码方法包括：获得视频序列的前K帧图像的第一统计特征; 确定第一背景帧; 根据所述第一统计特征确定用于对所述第一背景帧进行编码的QP; 根据所述QP对所述第一背景帧进行编码，得到第一背景长期参考帧; 以及根据第一背景长期参考帧将视频序列的图像的第（K + 1）帧编码为视频序列的图像的第（K + L）帧。当对视频序列的图像的第（K + 1）帧对视频序列的图像的第（K + L）帧执行编码时，根据用于对背景长期参考帧进行编码的所使用的QP 到与先前的K帧图像的视频内容有关的第一统计特性。这提高了总体视频编码质量。

2. 发明公开

EP3306932A1 METHOD FOR ENCODING AND DECODING REFERENCE IMAGE, ENCODING DEVICE, AND DECODING DEVICE 审中-公开
标题翻译：对参考图像进行编码和解码的方法，编码设备和解码设备
公开(公告)号：EP3306932A1
公开(公告)日：2018-04-11
申请号：EP16820792.6
申请日：2016-07-01
申请人： Huawei Technologies Co., Ltd. , University of Science and Technology of China
发明人： WU, Feng , CHEN, Fangdong , LI, Houqiang , LV, Zhuoyi , YANG, Haitao
IPC分类号： H04N19/46
CPC分类号： H04N19/176 , H04N19/179 , H04N19/46 , H04N19/55 , H04N19/573 , H04N19/58 , H04N19/61 , H04N19/91
摘要： The present invention provides a reference image encoding method, including: encoding a to-be-encoded sequence, to obtain a reconstructed image of a first reference image and a reconstructed image of a second reference image; determining whether a local area in the second reference image is suitable for updating a corresponding area or a related area in the first reference image; determining whether the corresponding area or the related area in the first reference image is updated; when the corresponding area or the related area in the first reference image is not updated, and it is determined that the local area in the second reference image is suitable for updating the corresponding area or the related area in the first reference image, replacing a pixel value of the corresponding area or the related area in the first reference image with a pixel value of the local area in the second reference image; and compiling, into the bitstream, reference image update information used to determine whether the local area in the second reference image is used to update the corresponding area or the related area in the first reference image.
摘要翻译：本发明提供了一种参考图像编码方法，包括：对待编码序列进行编码，得到第一参考图像和第二参考图像的重构图像的重构图像; 确定第二参考图像中的局部区域是否适合于更新第一参考图像中的对应区域或相关区域; 确定第一参考图像中的相应区域或相关区域是否被更新; 当第一参考图像中的对应区域或相关区域未被更新，并且确定第二参考图像中的局部区域适合于更新第一参考图像中的对应区域或相关区域时，将所述第一参考图像中的对应区域或相关区域的值与所述第二参考图像中的所述局部区域的像素值进行比较; 以及将用于确定第二参考图像中的局部区域是否用于更新第一参考图像中的对应区域或相关区域的参考图像更新信息编码到比特流中。

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