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1. 发明公开

EP4243414A1 DECODING AND ENCODING BASED ON ADAPTIVE INTRA-FRAME REFRESHING MECHANISM 审中-实审
公开(公告)号：EP4243414A1
公开(公告)日：2023-09-13
申请号：EP22770372.5
申请日：2022-03-10
申请人： Hangzhou Hikvision Digital Technology Co., Ltd.
发明人： WEI, Liang , CHEN, Fangdong , WANG, Li
IPC分类号： H04N19/159
摘要： Disclosed are a decoding method based on an adaptive intra-frame refreshing mechanism, an encoding method based on an adaptive intra-frame refresh mechanism, and a related device, which belong to the field of video encoding and decoding. In the embodiments of the present application, an adaptive intra-frame video refreshing extension number and virtual boundary location mark information are newly added to extended data in a code stream of the current frame. In this way, since virtual boundary location mark information can indicate the location of a virtual boundary, and the virtual boundary is at least used for distinguishing between a refreshed area and a non-refreshed area in the current frame, when dividing the refreshed area of the current frame, an encoding terminal can arbitrarily set the virtual boundary on the basis of actual demands, and indicate the location of the virtual boundary by means of the virtual boundary location mark information, thereby effectively improving the flexibility of area division.

2. 发明公开

EP3913917A1 METHODS FOR PERFORMING ENCODING AND DECODING, DECODING END AND ENCODING END 有权
公开(公告)号：EP3913917A1
公开(公告)日：2021-11-24
申请号：EP20769784.8
申请日：2020-03-09
申请人： Hangzhou Hikvision Digital Technology Co., Ltd.
发明人： CAO, Xiaoqiang , CHEN, Fangdong , WANG, Li
IPC分类号： H04N19/13 , H04N19/103 , H04N19/159
摘要： The present disclosure relates to the field of audio and video techniques. Provided are methods for performing encoding and decoding, a decoding end and an encoding end. The method comprises: acquiring encoded data of a current block; acquiring, from the encoded data, an index of a transform kernel pair associated with the current block, wherein adaptive binary arithmetic decoding is performed on a first bit of a binarized codeword corresponding to the index of the transform kernel pair on the basis of a context model; and determining the transform kernel pair corresponding to the current block according to the index of the transform kernel pair, wherein the transform kernel pair comprises a horizontal transform kernel and a vertical transform kernel. The present disclosure facilitates enhancing encoding and decoding performance.

3. 发明公开

EP4152750A1 ENCODING AND DECODING METHOD AND APPARATUS, AND DEVICE THEREFOR 审中-实审
公开(公告)号：EP4152750A1
公开(公告)日：2023-03-22
申请号：EP21834647.6
申请日：2021-06-24
申请人： Hangzhou Hikvision Digital Technology Co., Ltd.
发明人： SUN, Yucheng , CAO, Xiaoqiang , CHEN, Fangdong , WANG, Li
IPC分类号： H04N19/176
摘要： Provided by the present application are an encoding and decoding method and apparatus, and a device therefor. The method comprises: acquiring weight prediction angles and weight configuration parameters; configuring reference weight values for surrounding positions outside of a current block according to the weight configuration parameters; determining surrounding matching positions pointed to by pixel positions from the surrounding positions outside of the current block according to the weight prediction angles; determining a target weight value of the pixel positions according to a reference weight value associated with the surrounding matching positions, and determining an associated weight value of the pixel positions according to the target weight value of the pixel positions; determining a first predicted value of the pixel positions according to first target motion information, and determining a second predicted value of the pixel positions according to second target motion information; determining a weighted prediction value of the pixel positions according to the first predicted value, the target weight value, the second predicted value and the associated weight value; and determining a weighted prediction value of the current block according to weighted prediction values of all pixel positions. The prediction accuracy is improved by means of the present application.

4. 发明公开

EP3905695A1 VIDEO ENCODING, AND VIDEO DECODING 审中-公开
公开(公告)号：EP3905695A1
公开(公告)日：2021-11-03
申请号：EP19901742.7
申请日：2019-12-02
申请人： Hangzhou Hikvision Digital Technology Co., Ltd.
发明人： YE, Shurui , WANG, Li
IPC分类号： H04N19/593
摘要： The disclosure provides a video coding method and a video coding apparatus and a video decoding method and a video decoding apparatus. The video coding method includes: when determining that a current block is coded in intra block copy prediction mode, carrying first indication information and second indication information in bitstream data corresponding to the current block by a video coder, wherein the first indication information specifies that a prediction mode of the current block is intra prediction, the second indication information specifies that the current block is coded in intra block copy prediction mode; and sending the bitstream data with the first indication information and the second indication information by the video coder. In this way, efficiency of a video decoder to know that a data block is coded in intra block copy prediction mode may be improved by using the video coding method, and consistence between syntax and semantics when prediction coding/decoding the data block in intra block copy prediction mode may be ensured.

5. 发明公开

EP4333429A1 DECODING METHOD AND APPARATUS, CODING METHOD AND APPARATUS, DEVICE, AND STORAGE MEDIUM 审中-实审
公开(公告)号：EP4333429A1
公开(公告)日：2024-03-06
申请号：EP22831623.8
申请日：2022-06-06
申请人： Hangzhou Hikvision Digital Technology Co., Ltd.
发明人： CAO, Xiaoqiang , CHEN, Fangdong , WANG, Li
IPC分类号： H04N19/103 , H04N19/44 , H04N19/51
摘要： Decoding methods and apparatuses, coding methods and apparatuses, devices and machine-readable storage media are provided. In an example of the decoding method, for a received bitstream, by parsing a motion information index value of a skip mode or a direct mode of a current coding unit, a candidate list of the skip mode or the direct mode may be constructed, and determining a prediction mode of the current coding unit, thus, motion compensation can be performed on the current coding unit according to motion information of the current coding unit acquired from the prediction mode of the current coding unit. The motion information index value of the skip mode or the direct mode of the current coding unit is obtained by parsing according to the number of motion vector angle prediction candidate motion information and the number of inter-prediction candidate historical motion vector prediction information.

6. 发明公开

EP3633599A1 IMAGE DISTORTION CORRECTION METHOD AND DEVICE AND ELECTRONIC DEVICE 有权
公开(公告)号：EP3633599A1
公开(公告)日：2020-04-08
申请号：EP18806140.2
申请日：2018-04-16
申请人： Hangzhou Hikvision Digital Technology Co., Ltd.
发明人： PU, Shiliang , ZHOU, Lulu , WANG, Li , WU, Xiaoyang , XIE, Di
IPC分类号： G06T5/00
摘要： Embodiments of the present application provide a method, apparatus, and electronic device for eliminating distortion of a distorted image. Side information components of a distorted image are generated. The distorted image is resulted from image processing on an original image. Side information components represent distortion features of the distorted image with respect to original image. Distorted image color components of the distorted image and the side information components are input into a pre-established convolutional neural network model for convolution filtering to obtain distortion-eliminated image color components. The convolutional neural network model is obtained through training based on a preset training set. The training set comprises original sample images, distorted image color components of multiple distorted images corresponding to each of the original sample images, and side information components of each of the distorted images. Thereby, a CNN-based distortion elimination process different from related art is provided.

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