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1. CN112040337 - Video watermark adding method and device, video watermark extracting method and device, equipment and storage medium

Office
China
Application Number 202010906543.5
Application Date 01.09.2020
Publication Number 112040337
Publication Date 04.12.2020
Grant Number 112040337
Grant Date 15.04.2022
Publication Kind B
IPC
H04N 21/8358
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
83Generation or processing of protective or descriptive data associated with content; Content structuring
835Generation of protective data, e.g. certificates
8358involving watermark
H04N 21/44
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
40Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB ; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronizing decoder's clock; Client middleware
44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs
CPC
H04N 21/8358
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
83Generation or processing of protective or descriptive data associated with content; Content structuring
835Generation of protective data, e.g. certificates
8358involving watermark
H04N 21/44
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
Applicants TENCENT SCIENCE AND TECHNOLOGY (SHENZHEN) LIMITED COMPANY
腾讯科技(深圳)有限公司
Inventors MA HUAGUAN
马华冠
CHEN CHAOHONG
陈朝虹
ZHAO JIE
赵洁
CUI XIAODONG
崔晓东
WANG LIFU
王立福
HUANG WEI
黄维
LIU YICONG
刘译聪
LI XIN
李辛
PAN XIAOXIA
潘晓霞
Agents 北京三高永信知识产权代理有限责任公司 11138
Title
(EN) Video watermark adding method and device, video watermark extracting method and device, equipment and storage medium
(ZH) 视频的水印添加和提取方法、装置、设备及存储介质
Abstract
(EN) The invention discloses a video watermark adding method and device, a video watermark extracting method and device, equipment and a storage medium. The methods are applied to the field of video editing. The adding method comprises the following steps: acquiring a target image frame in video data; performing time-frequency conversion on the target image frame to obtain target frequency domain data,wherein the target frequency domain data comprises a matrix composed of frequency domain coefficients; modifying the frequency domain coefficients in the target frequency domain data according to watermark data to obtain watermark frequency domain data; performing time-frequency reverse conversion on the watermark frequency domain data to obtain a watermark image frame; and synthesizing watermarkvideo data according to the watermark image frame. According to the method, the robustness of the watermark can be improved.
(ZH) 本申请公开了一种视频的水印添加和提取方法、装置、设备及存储介质,所述方法应用于视频编辑领域。所述方法包括:获取视频数据中的目标图像帧;对所述目标图像帧进行时频转换得到目标频域数据,所述目标频域数据包括由频域系数组成的矩阵;根据水印数据修改所述目标频域数据中的所述频域系数,得到水印频域数据;对所述水印频域数据进行时频逆转换得到水印图像帧;根据所述水印图像帧合成水印视频数据。该方法可以提高水印的鲁棒性。
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