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公开(公告)号：EP3770854A1
公开(公告)日：2021-01-27
申请号：EP19861095.8
申请日：2019-06-28
发明人： ZHANG, Hao , NIU, Zhiwei
摘要： Embodiments of this application disclose a target tracking method and apparatus, a device, and a medium. The method includes: obtaining, by a server, a first video stream, and performing the following data processing for each video frame in the first video stream: performing, by the server, detection according to a target detection model and a current video frame, to obtain candidate regions in the current video frame; performing, by the server, extraction according to a feature extraction model and the candidate regions, to obtain a deep feature corresponding to each candidate region; calculating, by the server, a feature similarity corresponding to the each candidate region according to the deep feature corresponding to the each candidate region and a deep feature of a target detected in a previous video frame; and finally determining, by the server based on the feature similarity corresponding to the each candidate region, the target detected in the current video frame. Target detection is performed in a range of the current video frame by using the target detection model, and target tracking is performed based on the deep feature, so that occurrence of cases such as a tracking drift or losing a tracking target can be effectively prevented, to ensure the accuracy of target tracking.
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公开(公告)号：EP3767960A1
公开(公告)日：2021-01-20
申请号：EP19870081.7
申请日：2019-06-06
发明人： ZHANG, Hao , WANG, Jianguang , MA, Xuerui , WANG, Liang , ZHAI, Haichang , LIAO, Nianbo
IPC分类号： H04N21/2343 , H04N21/4402 , H04N19/587
摘要： A video transcoding method and device, and a storage medium are disclosed in embodiments of the present disclosure. The method includes the following steps: obtaining a video sequence in source video data, and obtaining a source video frame in the video sequence, the source video data including a plurality of video sequences arranged in a sequence arrangement order; obtaining a first ratio of a sum of absolute transformed differences of an initial frame in the video sequence to a bit rate of the video sequence, and adjusting a quantization parameter of the source video frame based on the first ratio; encoding the source video frame based on an adjusted quantization parameter to obtain a target video frame, and replacing the source video frame with the target video frame to obtain a video sequence after the replacement; and adding the video sequence after the replacement to target video data according to the sequence arrangement order.
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3.发明公开
公开(公告)号：EP2736199A1
公开(公告)日：2014-05-28
申请号：EP12861371.8
申请日：2012-12-27
发明人： ZHENG, Zhihao , ZHANG, Hao
IPC分类号： H04L12/58
CPC分类号： H04L51/18 , G06Q10/10 , H04L12/1827 , H04L51/04 , H04L51/08 , H04L51/22 , H04L67/20 , H04L67/42
摘要： Disclosed is a method for prompting dynamic information about a contact person. The method comprises: obtaining dynamic information about a contact person of a user; and displaying the dynamic information about the contact person in an instant messaging chat window of the user. Also disclosed is a device for prompting dynamic information about a contact person. After applying the method, the dynamic updated information about a contact person can be displayed in an instant messaging chat window of a user. Thus, when chatting with the contact person, the user can see a message about dynamic updated information about the contact person in the interactive chatting mode promptly. The user can obtain information and filter information more conveniently and with a shorter delay, thereby facilitating good communication between the user and the contact person and improving the user experience.
摘要翻译： 本发明公开了用于提示有关联系人的动态信息的方法。 该方法包括：获取关于用户的联系人的动态信息; 并在用户的即时消息聊天窗口中显示有关联系人的动态信息。 所以光盘游离缺失是引发了人们的联系人动态信息的设备。 应用该方法后，可以在用户的即时消息聊天窗口中显示在大约一个联系人的动态更新的信息。 因此，当与联系人聊天，用户可以看到一个关于关于联系人的互动聊天模式及时动态更新的信息消息。 用户可以获取信息和筛选信息更方便，用更短的延迟，从而促进用户和联系人，并改善用户体验之间的良好沟通。
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