Method and device for detecting video lens category and method and device for updating database
A detection method and database technology, which are applied in the fields of electronic digital data processing, digital data information retrieval, special data processing applications, etc., can solve the problems of incomplete visual feature data of advertising lenses, inaccurate results, and undetected advertisements.
Active Publication Date: 2020-02-18
BEIJING QIYI CENTURY SCI & TECH CO LTD
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Problems solved by technology
[0006] After the video website detects the advertising shots in the input video stream, people find that there are still some advertisements that have not been detected. It can be seen that the visual feature data of the advertising shots stored in the advertising shot visual feature database of the prior art is incomplete. Applying such The results of ad detection by the database are not accurate enough
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[0103] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0104] In order to solve the problems in the prior art, the embodiments of the present invention provide a method and device for detecting the category of video shots and a method and device for updating a visual feature database.
[0105] In the following, a detection method for a video shot category is firstly introduced.
[0106] figure 1 A schematic flowchart of a detection method for a video shot category provided by an embodiment of the present inventio...
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The embodiment of the invention provides a video shot category detection method and device and a database updating method and device. The detection method comprises the steps that an established visual characteristic database is used for detecting an input video stream, and a category label sequence with a shot as a unit is obtained, wherein the category label comprises a film title, a tail leader, an advertisement and a common program shot label, and visual characteristics of film title, tail leader and advertisement categories and corresponding category labels are stored in the visual characteristic database; the category label sequence is traversed, the category label sequence is corrected according to arrangement position features of different categories of labels and / or length features of different types of shots in the category label sequence, and a corrected category label sequence is obtained; the corrected category label sequence is determined as a detection result. By means of the methods and devices, the shots of different categories can be detected more accurately.
Description
technical field [0001] The present invention relates to the technical field of updating a visual feature database, in particular to a method and device for detecting the type of video footage and a method and device for updating a database. Background technique [0002] At present, the detection of video shot categories is mainly used to remove advertising shots in videos. Specifically, the video website needs to put the received live TV program on the website for users to watch. However, there are a large number of advertising shots in the live TV video, which leads to poor user experience. Therefore, it is necessary to detect the advertising shots in the live TV video to further remove the advertising shots. [0003] In the prior art, a passive detection method is usually used to detect the type of video shot, and the process mainly includes the following steps: First, a visual feature database needs to be established in advance, which includes the visual features of the ...
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IPC IPC(8): G06F16/783
CPCG06F16/7837
Inventor 刘楠
Owner BEIJING QIYI CENTURY SCI & TECH CO LTD