WO2014082353A1 - 一种识别频道的方法及装置 - Google Patents

一种识别频道的方法及装置 Download PDF

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Publication number
WO2014082353A1
WO2014082353A1 PCT/CN2012/086801 CN2012086801W WO2014082353A1 WO 2014082353 A1 WO2014082353 A1 WO 2014082353A1 CN 2012086801 W CN2012086801 W CN 2012086801W WO 2014082353 A1 WO2014082353 A1 WO 2014082353A1
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Prior art keywords
logo
video screenshot
video
channel
screenshot
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PCT/CN2012/086801
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English (en)
French (fr)
Inventor
李鹏
陆承恩
孙熙
高鹏程
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北京酷云互动科技有限公司
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Publication of WO2014082353A1 publication Critical patent/WO2014082353A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65Transmission of management data between client and server
    • H04N21/658Transmission by the client directed to the server
    • H04N21/6581Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/237Communication with additional data server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream

Definitions

  • the present invention relates to the field of computer and image processing technologies, and in particular, to a method and apparatus for identifying a channel. Background technique
  • Smart TV is a new TV product with a fully open platform and an operating system that allows customers to install and uninstall various application software while continuing to enhance and upgrade their functions while enjoying ordinary TV content. Smart TVs continue to give customers a rich and personalized experience.
  • Smart TV will implement various application services such as network search, IP (Internet Protocol) TV, BBTV Net Vision (a program content brand), video on demand (VOD), digital music, online news, network video telephony and so on.
  • IP Internet Protocol
  • BBTV Net Vision a program content brand
  • VOD video on demand
  • the TV is becoming the third information access terminal after the computer and mobile phone, and the user can access the information he needs at any time; the TV will also become a smart device to realize cross-platform search between TV, network and program; Smart TV It will also be an "entertainment center" where users can search for TV channels, record TV shows, play satellite and cable TV shows, and network video.
  • Embodiments of the present invention provide a method and apparatus for identifying a channel, which are used to enable a television terminal to obtain channel information.
  • a method for identifying a channel comprising the steps of: sending a video screenshot to a server, instructing a server to perform channel analysis according to a video screenshot; and receiving channel information sent by the server.
  • the server is made aware of the video content currently played on the TV terminal side, thereby determining the channel information that is played. In this way, the television terminal can obtain channel information from the server, thereby implementing push of other applications and the like.
  • the method before the sending the video screenshot to the server, the method further comprises the steps of: obtaining a plurality of video screenshots according to the preset time interval and the continuous screenshot.
  • the server can be analyzed based on multiple video screenshots to improve the accuracy of the analysis.
  • the step of sending a video screenshot to the server comprises: sending a video screenshot to the server after determining that the channel has changed.
  • the television terminal transmits the video screenshot only after the channel changes, and does not need to transmit in real time, thereby reducing the amount of data transmission.
  • the step of determining the channel change comprises: analyzing the color of the logo area of the video screenshot, and determining whether the channel changes according to the change of the color.
  • This embodiment provides an implementation manner for specifically determining whether a channel changes.
  • a method for identifying a channel comprising the steps of: receiving a screenshot of a video sent by a television terminal; analyzing the logo in the video screenshot to determine a logo in the video screenshot; determining and analyzing the correspondence according to the correspondence between the logo and the channel information
  • the channel information corresponding to the station logo; the determined channel information is sent to the television terminal.
  • the server side analyzes the channel information and sends it to the TV terminal side, so that the current terminal information can be obtained by the television terminal side.
  • the step of analyzing the logo in the video screenshot comprises at least one of the following steps: performing a logo analysis on a plurality of corner regions of the video screenshot; and analyzing a plurality of non-overlapping logos in the video screenshot; Analyze multiple overlapping logos in a video screenshot.
  • Analysis of the logos in regional and special cases can improve the accuracy and efficiency of the analysis.
  • the step of determining the logo in the video screenshot includes: determining a plurality of logos The main station logo of the current channel can be identified. The situation where multiple logos exist at the same time is usually because one channel is rebroadcasting another channel's program, so the channel of the broadcast program is the current real channel, that is, the main channel, so it needs to be identified.
  • the step of analyzing the logo in the video screenshot comprises: analyzing the logo according to the color of the logo area of the video screenshot.
  • This embodiment provides an implementation of a specific analysis.
  • a method of identifying a channel comprising the following steps:
  • the channel information corresponding to the analyzed station logo is determined.
  • the step of analyzing the logo in the video screenshot includes at least one of the following steps:
  • a television terminal for identifying a channel comprising:
  • a sending module configured to send a video screenshot to the server, instructing the server to perform channel analysis according to the video screenshot
  • the receiving module is configured to receive channel information sent by the server.
  • the television terminal further includes: a screenshot module, configured to continuously capture screenshots according to preset time intervals, and obtain multiple video screenshots.
  • the sending module sends a video screenshot to the server after determining that the channel changes.
  • the television terminal further includes: an analysis module, configured to analyze a color of the logo area of the video screenshot, and determine whether the channel changes according to the change of the color.
  • a server that identifies a channel including:
  • a receiving module configured to receive a video screenshot sent by the television terminal;
  • the analysis module is configured to analyze the logo in the video screenshot to determine the logo in the video screenshot;
  • the query module is configured to determine, according to the correspondence between the logo and the channel information, the channel information corresponding to the analyzed logo;
  • a sending module configured to send the determined channel information to the television terminal.
  • the analysis module has at least one of the following functions:
  • the analysis module determines a main logo of the plurality of logos that can identify the current channel. .
  • the analysis module analyzes the station logo according to the color of the logo area of the video screenshot.
  • FIG. 1 is a flow chart of a main method for identifying a channel on a television terminal side according to an embodiment of the present invention
  • FIG. 2A is a flowchart of a detailed method for identifying a channel on a television terminal side according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for identifying a channel on a server side according to an embodiment of the present invention
  • FIG. 1 is a flow chart of a main method for identifying a channel on a television terminal side according to an embodiment of the present invention
  • FIG. 2A is a flowchart of a detailed method for identifying a channel on a television terminal side according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for identifying a channel on a server side according to an embodiment of the present invention
  • FIG. 1 is a flow chart of a main method for identifying a channel on a television terminal side according to an embodiment of the present invention
  • FIG. 2A is a
  • FIG. 4 is a flowchart of a detailed method for identifying a channel on a server side according to an embodiment of the present invention
  • FIG. 5 is a main structural diagram of a television terminal according to an embodiment of the present invention
  • FIG. 6 is a detailed structural diagram of a television terminal according to an embodiment of the present invention
  • FIG. 7 is a structural diagram of a server in an embodiment of the present invention. detailed description
  • the server by sending a video screenshot to the server, the server is informed of the video content currently played by the television terminal side, thereby determining the channel information played by the server. In this way, the television terminal can obtain channel information from the server, thereby implementing push of other applications and the like.
  • Step 101 Send a video screenshot to the server, and instruct the server to perform channel division according to the video screenshot.
  • Step 102 Receive channel information sent by the server.
  • the channel information in this embodiment includes: channel identification information such as a channel identifier and a frequency band.
  • the video terminal side needs to obtain a video screenshot, and the specific obtaining manner is various, such as obtaining a video screenshot in real time. Or, take consecutive screenshots based on preset time intervals to get multiple video screenshots.
  • the preset time interval is 0.1 second, 1 second, and so on.
  • the number of video screenshots obtained continuously is N, and the preferred range of N is 100 ⁇ 200.
  • the television terminal side does not need to send a video screenshot to the server when the channel does not change, and sends a video screenshot to the server after each channel change, such as continuously sending N video screenshots. This will reduce the number of screenshots sent.
  • the pixel feature of the surrounding area and the logo of the logo in the K screenshot are obtained, and the pixel feature is used as the training sample to train the model.
  • Row training, training model can be specifically used vector machine (SVM) model.
  • SVM vector machine
  • the pixel feature can be represented by a color histogram.
  • the television terminal side can use the training model to determine whether the channel changes. That is, the newly obtained video screenshot is input into the training model, and the pixel feature of the video screenshot is matched with the feature set in the training model. If the matching similarity exceeds the preset threshold, the output value is true, that is, If the pixel value relationship between the station logo and the surrounding area does not change, it is determined that the channel has not changed, otherwise the channel is determined to change.
  • Step 201 The TV terminal performs video capture. At this point you need to get at least two video screenshots.
  • Step 202 The television terminal analyzes the color of the logo area of the video screenshot.
  • Step 203 The television terminal determines whether the channel changes. If yes, proceed to step 204. Otherwise, proceed to step 201.
  • Step 204 The television terminal sends a screenshot of the video after the channel change to the server.
  • Step 205 The server determines corresponding channel information according to the received video screenshot.
  • Step 206 The television terminal receives the channel information sent by the server.
  • the TV terminal can also locally identify and analyze the logo, and then determine the channel information, without sending a screenshot of the video to the server.
  • the process is as follows, see Figure 2B:
  • Step 211 Obtain a video screenshot.
  • Step 212 Analyze the logo in the video screenshot to determine the logo in the video screenshot.
  • Step 213 Determine channel information corresponding to the analyzed station logo according to the correspondence between the station logo and the channel information.
  • Step 301 Receive a video screenshot sent by a television terminal.
  • Step 302 Analyze the logo in the video screenshot to determine the logo in the video screenshot.
  • Step 303 Determine channel information corresponding to the analyzed station logo according to the correspondence between the station logo and the channel information.
  • Step 304 Send the determined channel information to the television terminal.
  • the server side analysis of the logo in the video screenshot includes many aspects, such as analyzing the corner area of the video cut, and the corner area is the most likely area of the logo. Analysis of this part of the area can improve the efficiency of the analysis, and reduce the interference of the unrelated area on the analysis, and improve the accuracy of the analysis.
  • one channel broadcasts a program of another channel, so that multiple logos may appear in one video screenshot, and multiple logos may overlap without overlapping, which involves analyzing multiple logos, determining Among the plurality of logos, the main logo of the current channel can be identified, that is, the logo of the channel of the broadcast program is identified.
  • the identification of the logo in each case is based on the training model.
  • the process of constructing a training model is as follows:
  • K screenshots are taken as training samples for each TV station, and L pictures without any channel icons are taken as training samples for the "No Station" scene.
  • the labellist is the label information corresponding to the feature list. If the feature belongs to the station label t, the label is 1 , and if not, the label is 0. In this way, N models related to the logo and a logo-free scene recognition model can be trained.
  • the training model can be obtained by the above method, and then the training model can be used to capture the video.
  • the logo is analyzed.
  • the specific method is as follows:
  • svm_model represents the training model used
  • feature represents the extracted feature
  • Step 401 The server receives a video screenshot sent by the television terminal.
  • Step 402 The server performs color analysis on the image of the corner area in the video screenshot to obtain color analysis data.
  • Step 403 The server adds the color analysis data to the preset training model.
  • Step 404 The server determines whether there is a logo by using the training model, and analyzes a plurality of logo conditions to determine the logo. In particular, determine the main station logo.
  • Step 405 The server determines, according to the correspondence between the preset station logo and the channel information, the channel information corresponding to the obtained logo.
  • Step 406 The server sends the determined channel information to the television terminal.
  • the process is mainly implemented by a television terminal and a server.
  • the internal structure and functions of the two devices are described below.
  • the television terminal in this embodiment includes: a sending module 501 and a receiving module 502.
  • the television terminal may specifically have a video for a television (especially a smart TV), a computer, a mobile terminal, etc. Playback device.
  • the sending module 501 is configured to send a video screenshot to the server, instructing the server to perform channel analysis according to the video screenshot.
  • the sending module 501 sends a video screenshot to the server after determining that the channel has changed.
  • the receiving module 502 is configured to receive channel information sent by the server.
  • the information interaction between the television terminal and the server can be realized by wireless internet.
  • the television terminal further includes a screenshot module 503 and an analysis module 504, as shown in FIG.
  • the screenshot module 503 is configured to continuously capture screenshots according to preset time intervals to obtain multiple video screenshots.
  • the analysis module 504 is configured to analyze the color of the logo area of the video screenshot, and determine whether the channel changes according to the change of the color.
  • the server in this embodiment includes: a receiving module 701, an analyzing module 702, a querying module 703, and a sending module 704.
  • the receiving module 701 is configured to receive a video screenshot sent by the television terminal.
  • the analysis module 702 is configured to analyze the logo in the video screenshot to determine the logo in the video screenshot.
  • the query module 703 is configured to determine channel information corresponding to the analyzed station logo according to the correspondence between the station logo and the channel information.
  • the sending module 704 is configured to send the determined channel information to the television terminal.
  • the analysis module 702 has at least one of the following functions: performing tabular analysis on multiple corner regions of the video screenshot; analyzing multiple non-overlapping logos in the video screenshot; Overlapping logos are analyzed.
  • the analysis module 702 determines that the plurality of logos can identify The main station logo of the current channel.
  • the analysis module 702 analyzes the station logo according to the color of the logo area of the video screenshot.
  • the server by sending a video screenshot to the server, the server is made aware of the video content currently played by the television terminal side, thereby determining the channel information that is played. In this way, the TV terminal can be served The server obtains channel information, and then pushes other applications.
  • This embodiment is particularly suitable for the case where a new channel is present, and only the records in the server need to be updated.
  • the TV terminal detects the channel change and sends a video screenshot to the server, the corresponding channel information can be obtained from the server, especially the channel information of the new channel, and the TV terminal does not need to be upgraded on a large scale, and the amount of modification is small.
  • the television terminal further determines whether a channel change occurs through a preset training model, and sends a video screenshot when the change occurs to reduce the amount of data transmission.
  • the server can accurately analyze the logos in various situations through the preset training model, and can improve the analysis efficiency.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • a computer-usable storage medium including but not limited to disk storage and optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

本申请公开了一种识别频道的方法,用于实现使电视终端获知频道信息。电视终端侧的方法包括:向服务器发送视频截图,指示服务器根据视频截图进行频道分析;接收服务器发送的频道信息。服务器侧的方法包括:接收电视终端发送的视频截图;对视频截图中的台标进行分析,确定视频截图中的台标;根据台标与频道信息的对应关系,确定分析出的台标对应的频道信息;将确定的频道信息发送给电视终端。本申请还公开了用于实现所述方法的装置。

Description

一种识别频道的方法及装置 本申请要求在 2012年 11月 30 日 提交中 国专利局、 申请号为 201210507292.9、 发明名称为"一种识别频道的方法及装置"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及计算机及图像处理技术领域,尤其涉及一种识别频道的方法 及装置。 背景技术
智能电视, 是具有全开放式平台, 搭载了操作系统, 顾客在欣赏普通电 视内容的同时, 可自行安装和卸载各类应用软件, 持续对功能进行扩充和升 级的新电视产品。 智能电视能够不断给顾客带来丰富的个性化体验。
目前智能电视的到来, 顺应了电视机 "高清化"、 "网络化"、 "智能化"的趋 势。 当 PC (个人计算机)早就智能化, 手机和平板也在大面积智能化的情况 下, TV (电视)这一块屏幕不会逃过 IT (信息技术) 巨头的法眼, 一定也会 走向智能化。 所谓真正的智能电视, 应该具备能从网络、 AV (音视频)设备、 PC等多种渠道获得节目内容, 通过简单易用的整合式操作界面, 简易操作将 消费者最需要的内容在大屏幕上清晰地展现。 智能电视将实现网络搜索、 IP (互联网协议 )电视、 BBTV网视通(一个节目内容品牌)、视频点播(VOD)、 数字音乐、 网络新闻、 网络视频电话等各种应用服务。 电视机正在成为继计 算机、 手机之后的第三种信息访问终端, 用户可随时访问自己需要的信息; 电视机也将成为一种智能设备, 实现电视、 网络和程序之间跨平台搜索; 智 能电视还将是一个"娱乐中心", 用户可以搜索电视频道、 录制电视节目、 能够 播放卫星和有线电视节目以及网络视频。
本申请的发明人发现, 很多智能电视的上的应用, 都是基于频道信息, 所以获得频道信息是应用的关键, 目前尚未发现识别频道的解决方案。 发明内容
本发明实施例提供一种识别频道的方法及装置, 用于实现使电视终端获 知频道信息。
一种识别频道的方法, 包括以下步骤: 向服务器发送视频截图, 指示服 务器根据视频截图进行频道分析; 接收服务器发送的频道信息。 本实施例中 通过向服务器发送视频截图, 来使服务器获知电视终端侧当前播放的视频内 容, 从而确定其播放的频道信息。 这样, 电视终端便可从服务器处获得频道 信息, 进而实现其它应用的推送等。
优选的, 向服务器发送视频截图之前还包括步骤: 根据预设的时间间隔 连续截图, 获得多个视频截图。 获得多个视频截图后, 可使服务器根据多个 视频截图进行分析, 从而提高分析的准确度。
优选的, 向服务器发送视频截图的步骤包括: 在确定频道发生变化后, 向服务器发送视频截图。 本实施例中电视终端只在频道发生变化后发送视频 截图, 而不需要实时发送, 减少数据传输量。
优选的, 确定频道发生变化的步骤包括: 对视频截图的台标区域的颜色 进行分析, 根据颜色的变化判断频道是否发生变化。 本实施例提供一种具体 判断频道是否变化的实现方式。
一种识别频道的方法, 包括以下步骤: 接收电视终端发送的视频截图; 对视频截图中的台标进行分析, 确定视频截图中的台标; 根据台标与频道信 息的对应关系, 确定分析出的台标对应的频道信息; 将确定的频道信息发送 给电视终端。 服务器侧收到视频截图后进行分析, 从而确定频道信息并发送 给电视终端侧, 使得电视终端侧可获知当前频道信息。
优选的, 对视频截图中的台标进行分析的步骤至少包括下列步骤之一: 对视频截图的多个边角区域进行台标分析; 对视频截图中的多个不重叠的台 标进行分析; 对视频截图中的多个重叠的台标进行分析。 本实施例中对典型 区域和特殊情况下的台标进行分析, 可提高分析的准确度和效率。 优选的, 对视频截图中的多个不重叠的台标进行分析, 或对视频截图中 的多个重叠的台标进行分析时, 确定视频截图中的台标的步骤包括: 确定多 个台标中能够标识当前频道的主台标。 多个台标同时存在的情况通常是因为 一个频道在转播另一个频道的节目, 所以转播节目的频道才是当前真正的频 道, 即主频道, 因此需要进行识别。
优选的, 对视频截图中的台标进行分析的步骤包括: 根据视频截图的台 标区域的颜色, 对台标进行分析。 本实施例提供一种具体分析的实现方式。
一种识别频道的方法, 包括以下步骤:
获得视频截图;
对视频截图中的台标进行分析, 确定视频截图中的台标;
根据台标与频道信息的对应关系, 确定分析出的台标对应的频道信息。 对视频截图中的台标进行分析的步骤至少包括下列步骤之一:
对视频截图的多个边角区域进行台标分析;
对视频截图中的多个不重叠的台标进行分析;
对视频截图中的多个重叠的台标进行分析。
一种识别频道的电视终端, 包括:
发送模块, 用于向服务器发送视频截图, 指示服务器根据视频截图进行 频道分析;
接收模块, 用于接收服务器发送的频道信息。
所述电视终端还包括: 截图模块, 用于根据预设的时间间隔连续截图, 获得多个视频截图。
优选的, 发送模块在确定频道发生变化后, 向服务器发送视频截图。 所述电视终端还包括: 分析模块, 用于对视频截图的台标区域的颜色进 行分析, 根据颜色的变化判断频道是否发生变化。
一种识别频道的服务器, 包括:
接收模块, 用于接收电视终端发送的视频截图; 分析模块, 用于对视频截图中的台标进行分析, 确定视频截图中的台标; 查询模块, 用于根据台标与频道信息的对应关系, 确定分析出的台标对 应的频道信息;
发送模块, 用于将确定的频道信息发送给电视终端。
优选的, 分析模块至少具有下列功能之一:
对视频截图的多个边角区域进行台标分析;
对视频截图中的多个不重叠的台标进行分析;
对视频截图中的多个重叠的台标进行分析。
优选的, 对视频截图中的多个不重叠的台标进行分析, 或对视频截图中 的多个重叠的台标进行分析时, 分析模块确定多个台标中能够标识当前频道 的主台标。
优选的, 分析模块根据视频截图的台标区域的颜色, 对台标进行分析。 本发明的其它特征和优点将在随后的说明书中阐述, 并且, 部分地从说 明书中变得显而易见, 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。
下面通过附图和实施例, 对本发明的技术方案做进一步的详细描述。
附图说明
附图用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与本 发明的实施例一起用于解释本发明, 并不构成对本发明的限制。 在附图中: 图 1为本发明实施例中电视终端侧识别频道的主要方法流程图; 图 2A为本发明实施例中电视终端侧识别频道的详细方法流程图; 图 2B为本发明实施例中电视终端侧独立识别频道的方法流程图; 图 3为本发明实施例中服务器侧识别频道的主要方法流程图;
图 4为本发明实施例中服务器侧识别频道的详细方法流程图;
图 5为本发明实施例中电视终端的主要结构图; 图 6为本发明实施例中电视终端的详细结构图;
图 7为本发明实施例中服务器的结构图。 具体实施方式
以下结合附图对本发明的优选实施例进行说明, 应当理解, 此处所描述 的优选实施例仅用于说明和解释本发明, 并不用于限定本发明。
本实施例中通过向服务器发送视频截图, 来使服务器获知电视终端侧当 前播放的视频内容, 从而确定其播放的频道信息。 这样, 电视终端便可从服 务器处获得频道信息, 进而实现其它应用的推送等。
参见图 1 , 本实施例中电视终端侧识别频道的主要方法流程如下: 步骤 101 : 向服务器发送视频截图, 指示服务器根据视频截图进行频道分 步骤 102: 接收服务器发送的频道信息。
本实施例中频道信息包括: 频道标识、 频段等与频道有关的信息。
在步骤 101之前, 电视终端侧需要获得视频截图, 具体获得方式有多种, 如实时获得视频截图。 或者, 根据预设的时间间隔连续截图, 获得多个视频 截图。预设的时间间隔为 0.1秒级、 1秒级等。连续获得的视频截图数量为 N, N的较佳取值范围为 100~200。
较佳的, 电视终端侧在频道未发生变化时不需要向服务器发送视频截图, 每次频道变化后, 向服务器发送视频截图, 如连续发送 N张视频截图。 这样 可以减少发送视频截图的数量。
电视终端侧具体判断频道是否发生变化的方式有多种, 如对视频截图的 台标区域的颜色进行分析, 根据颜色的变化判断频道是否发生变化, 其中台 标区域包括视频截图中的四角区域。
电视终端侧具体判断频道是否发生变化的过程如下:
由于台标在多个视频截图中其像素值都是不变的, 获得 K张截图中台标 周边区域与台标的像素特征, 并利用该像素特征作为训练样本对训练模型进 行训练, 训练模型可具体釆用向量机(SVM )模型。 其中, 像素特征可釆用 颜色直方图表示。
获得了训练模型之后, 电视终端侧便可利用该训练模型判断频道是否发 生变化。 即, 将新获得的视频截图输入到训练模型中, 将视频截图的像素特 征与训练模型中的特征集合进行匹配, 若匹配的相似度超过预设的门限值, 则输出值为真, 即台标与周围区域的像素值关系未发生变化, 则确定频道未 发生变化, 否则确定频道发生变化。
下面通过一个详细实施例来介绍电视终端侧识别频道的过程。
参见图 2A, 本实施例中电视终端侧识别频道的详细方法流程如下: 步骤 201 : 电视终端进行视频截图。 此时至少需要获得两张视频截图。 步骤 202: 电视终端对视频截图的台标区域的颜色进行分析。
步骤 203: 电视终端判断频道是否发生变化, 若是, 则继续步骤 204, 否 则继续步骤 201。
步骤 204: 电视终端将频道变化后的视频截图发送给服务器。
步骤 205: 服务器根据收到的视频截图确定相应的频道信息。
步骤 206: 电视终端接收服务器发送的频道信息。
电视终端也可以本地进行台标的识别和分析, 进而确定频道信息, 不需 要将视频截图发送给服务器。 其过程如下, 参见图 2B所示:
步骤 211 : 获得视频截图。
步骤 212: 对视频截图中的台标进行分析, 确定视频截图中的台标。 步骤 213: 根据台标与频道信息的对应关系, 确定分析出的台标对应的频 道信息。
以上介绍了电视终端侧的实现过程, 相应的, 服务器侧也有所改进, 下 面对服务器侧的实现过程进行介绍。
参见图 3 , 本实施例中服务器侧识别频道的主要方法流程如下: 步骤 301 : 接收电视终端发送的视频截图。
步骤 302: 对视频截图中的台标进行分析, 确定视频截图中的台标。 步骤 303: 根据台标与频道信息的对应关系, 确定分析出的台标对应的频 道信息。
步骤 304: 将确定的频道信息发送给电视终端。
其中, 服务器侧对视频截图中的台标的分析包括很多方面, 如对视频截 图的边角区域进行分析, 边角区域是台标最可能出现的区域。 对这部分区域 进行分析, 可提高分析的效率, 并且减少无关区域对分析的干扰, 提高分析 的准确度。
以及, 可能存在一个频道转播另一个频道的节目的情况, 这样就可能在 一个视频截图中出现多个台标, 多个台标可能重叠可能不重叠, 则涉及到对 多个台标的分析, 确定多个台标中能够标识当前频道的主台标, 即识别出转 播节目的频道的台标。
对各种情况下的台标识别, 均是基于训练模型来实现。 构造训练模型的 过程如下:
假如有 N个电视台, 对每个电视台截取 K张截图作为训练样本, 同时另 外取 L张不包含任何频道图标的图作为 "无台标" 场景的训练样本。
由于台标在视频截图中的位置基本不变, 因此, 对每个频道的 K张图进 行叠加, 取像素平均值, 基本上可以确定每个频道的台标的位置。 以每个台 标 t的中心位置为中心, 取一块矩形区域 R(t)。
对 N个频道, 训练 N+1个模型 (包括一个无台标模型), 假设训练模型 为 M(t), 则对于频道 N(t)所对应的模型 M(t), 对所有的 N*K+L 张图片, 根 据 N(t)对应的矩形区域 R(t)截取图片的子图 S(i), 然后提取特征, 用支持向量 机( svm )进行训练。 如下面的函数所示。
svm model = svm_train(featurelist, labellist);
labellist是特征 list (列表)所对应的 label (标签 )信息, 如果该特征属 于台标 t, 则 label为 1 , 如果不是则 label为 0。 这样可训练出 N个与台标相 关的模型和 1个无台标场景识别模型。
通过上述方法可获得训练模型, 之后便可通过该训练模型对视频截图中 的台标进行分析。 具体方式如下:
对于一张输入的视频截图, 根据每个模型, 提取特征, 输入到以下预测 函数中。
[Predict— label, probability] = svm_predict(svm— model, feature)
其中, svm— model 表示釆用的训练模型, feature 表示提取的特征, svm_predict表示向量机预测函数。 若函数返回: predict— label == 1 , 则表示预 测为当前模型, 如果 predict— label == 0, 则表示不为当前模型, probablility为 置信概率。 最后, 取 predict— label为 1且置信概率最高的模型所对应的台标为 预测的台标。
对于多个台标叠加、 一个台可能有多种台标的情形, 只需要把对应的情 形也作为训练样本, 标记出这种场景下应该识别为的主台标, 进行上述模型 训练即可。
下面通过一个典型实施例来详细介绍服务器侧识别频道的实现过程。 参见图 4, 本实施例中服务器侧识别频道的详细方法流程如下: 步骤 401 : 服务器接收电视终端发送的视频截图。
步骤 402: 服务器对视频截图中的边角区域的图像进行颜色分析,得到颜 色分析数据。
步骤 403: 服务器将颜色分析数据加入到预设的训练模型。
步骤 404: 服务器通过训练模型进行是否有台标的分析, 以及多个台标情 况的分析, 确定台标。 尤其是确定主台标。
步骤 405: 服务器根据预设的台标与频道信息的对应关系, 确定获得的台 标对应的频道信息。
步骤 406: 服务器将确定的频道信息发送给电视终端。
通过以上描述了解了识别频道的方法实现过程, 该过程主要由电视终端 和服务器实现, 下面对这两个设备的内部结构和功能进行介绍。
参见图 5 , 本实施例中电视终端包括: 发送模块 501和接收模块 502。 电 视终端可具体为电视机(尤其是智能电视机)、 计算机、 移动终端等具有视频 播放功能的设备。
发送模块 501 用于向服务器发送视频截图, 指示服务器根据视频截图进 行频道分析。 较佳的, 发送模块 501 在确定频道发生变化后, 向服务器发送 视频截图。
接收模块 502用于接收服务器发送的频道信息。
电视终端与服务器之间的信息交互可通过无线互联网方式实现。
较佳的, 电视终端还包括截图模块 503和分析模块 504, 参见图 6所示。 截图模块 503用于根据预设的时间间隔连续截图, 获得多个视频截图。 分析模块 504用于对视频截图的台标区域的颜色进行分析, 根据颜色的 变化判断频道是否发生变化。
参见图 7 , 本实施例中服务器包括: 接收模块 701、 分析模块 702、 查询 模块 703和发送模块 704。
接收模块 701用于接收电视终端发送的视频截图。
分析模块 702用于对视频截图中的台标进行分析, 确定视频截图中的台 标。
查询模块 703 用于根据台标与频道信息的对应关系, 确定分析出的台标 对应的频道信息。
发送模块 704用于将确定的频道信息发送给电视终端。
较佳的, 分析模块 702至少具有下列功能之一: 对视频截图的多个边角 区域进行台标分析; 对视频截图中的多个不重叠的台标进行分析; 对视频截 图中的多个重叠的台标进行分析。
本实施例中较佳的, 对视频截图中的多个不重叠的台标进行分析, 或对 视频截图中的多个重叠的台标进行分析时, 分析模块 702确定多个台标中能 够标识当前频道的主台标。 其中, 分析模块 702根据视频截图的台标区域的 颜色, 对台标进行分析。
本实施例中通过向服务器发送视频截图, 来使服务器获知电视终端侧当 前播放的视频内容, 从而确定其播放的频道信息。 这样, 电视终端便可从服 务器处获得频道信息, 进而实现其它应用的推送等。 本实施例尤其适用于出 现新频道的情况, 只需更新服务器中的记录。 电视终端在发现频道变化后向 服务器发送视频截图, 便可从服务器处获得相应的频道信息, 尤其是新频道 的频道信息, 不需要对电视终端进行大规模的升级, 改动量较少。 本实施例 中电视终端还通过预设的训练模型判断是否发生频道变化, 在发生变化时才 发送视频截图, 以减少数据传输量。 服务器通过预设的训练模型可较准确的 分析出多种情况下的台标, 并且可提高分析效率。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或 计算机程序产品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本发明可釆用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器和光学存储器等 )上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。 发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种识别频道的方法, 其特征在于, 包括以下步骤:
向服务器发送视频截图, 指示服务器根据视频截图进行频道分析; 接收服务器发送的频道信息。
2、 如权利要求 1所述的方法, 其特征在于, 向服务器发送视频截图之前 还包括步骤: 根据预设的时间间隔连续截图, 获得多个视频截图。
3、 如权利要求 1所述的方法, 其特征在于, 向服务器发送视频截图的步 骤包括: 在确定频道发生变化后, 向服务器发送视频截图。
4、 如权利要求 3所述的方法, 其特征在于, 确定频道发生变化的步骤包 括: 对视频截图的台标区域的颜色进行分析, 根据颜色的变化判断频道是否 发生变化。
5、 一种识别频道的方法, 其特征在于, 包括以下步骤:
接收电视终端发送的视频截图;
对视频截图中的台标进行分析, 确定视频截图中的台标;
根据台标与频道信息的对应关系, 确定分析出的台标对应的频道信息; 将确定的频道信息发送给电视终端。
6、 如权利要求 5所述的方法, 其特征在于, 对视频截图中的台标进行分 析的步骤至少包括下列步骤之一:
对视频截图的多个边角区域进行台标分析;
对视频截图中的多个不重叠的台标进行分析;
对视频截图中的多个重叠的台标进行分析。
7、 如权利要求 6所述的方法, 其特征在于, 对视频截图中的多个不重叠 的台标进行分析, 或对视频截图中的多个重叠的台标进行分析时, 确定视频 截图中的台标的步骤包括: 确定多个台标中能够标识当前频道的主台标。
8、 如权利要求 5所述的方法, 其特征在于, 对视频截图中的台标进行分 析的步骤包括: 根据视频截图的台标区域的颜色, 对台标进行分析。
9、 一种识别频道的方法, 其特征在于, 包括以下步骤:
获得视频截图;
对视频截图中的台标进行分析, 确定视频截图中的台标;
根据台标与频道信息的对应关系, 确定分析出的台标对应的频道信息。
10、 如权利要求 9 所述的方法, 其特征在于, 对视频截图中的台标进行 分析的步骤至少包括下列步骤之一:
对视频截图的多个边角区域进行台标分析;
对视频截图中的多个不重叠的台标进行分析;
对视频截图中的多个重叠的台标进行分析。
11、 一种识别频道的电视终端, 其特征在于, 包括:
发送模块, 用于向服务器发送视频截图, 指示服务器根据视频截图进行 频道分析;
接收模块, 用于接收服务器发送的频道信息。
12、 如权利要求 11所述的电视终端, 其特征在于, 还包括: 截图模块, 用于根据预设的时间间隔连续截图, 获得多个视频截图。
13、 如权利要求 11所述的电视终端, 其特征在于, 发送模块在确定频道 发生变化后, 向服务器发送视频截图。
14、 如权利要求 13所述的电视终端, 其特征在于, 还包括: 分析模块, 用于对视频截图的台标区域的颜色进行分析, 根据颜色的变化判断频道是否 发生变化。
15、 一种识别频道的服务器, 其特征在于, 包括:
接收模块, 用于接收电视终端发送的视频截图;
分析模块, 用于对视频截图中的台标进行分析, 确定视频截图中的台标; 查询模块, 用于根据台标与频道信息的对应关系, 确定分析出的台标对 应的频道信息;
发送模块, 用于将确定的频道信息发送给电视终端。
16、 如权利要求 15所述的服务器, 其特征在于, 分析模块至少具有下列 功能之一:
对视频截图的多个边角区域进行台标分析;
对视频截图中的多个不重叠的台标进行分析;
对视频截图中的多个重叠的台标进行分析。
17、 如权利要求 16所述的服务器, 其特征在于, 对视频截图中的多个不 重叠的台标进行分析, 或对视频截图中的多个重叠的台标进行分析时, 分析 模块确定多个台标中能够标识当前频道的主台标。
18、 如权利要求 15所述的服务器, 其特征在于, 分析模块根据视频截图 的台标区域的颜色, 对台标进行分析。
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