WO2017128655A1 - 一种视频水印处理的方法及装置 - Google Patents

一种视频水印处理的方法及装置 Download PDF

Info

Publication number
WO2017128655A1
WO2017128655A1 PCT/CN2016/091568 CN2016091568W WO2017128655A1 WO 2017128655 A1 WO2017128655 A1 WO 2017128655A1 CN 2016091568 W CN2016091568 W CN 2016091568W WO 2017128655 A1 WO2017128655 A1 WO 2017128655A1
Authority
WO
WIPO (PCT)
Prior art keywords
watermark
watermarking
module
video
policy
Prior art date
Application number
PCT/CN2016/091568
Other languages
English (en)
French (fr)
Inventor
陈尚松
吴迪
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2017128655A1 publication Critical patent/WO2017128655A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8358—Generation of protective data, e.g. certificates involving watermark

Definitions

  • the present invention relates to the field of video processing technologies, and in particular, to a video watermark processing method and apparatus.
  • High-Definition High-Definition
  • FHD Full High-Definition
  • UHD Ultra High-Definition
  • High-resolution video has gradually entered the public eye and quickly promoted. Due to the high cost of high-quality video production, copyright protection has formed an industry consensus and continues to strengthen. Organizations such as Movie Labs have developed security specifications in which video output to end devices must be protected with High-bandwidth Digital Content Protection (HDCP) technology.
  • HDCP High-bandwidth Digital Content Protection
  • Digital watermarking is a commonly used protection technology. Digital watermarking is the addition of certain digital information to data multimedia, such as image, sound and video streams, to achieve document authenticity, copyright protection and other functions.
  • TEE Trusted Execution Environment
  • RVM Digital Rights Management
  • REE Application-rich open runtime environment
  • TEE is a trusted and secure operating environment.
  • the software and hardware resources in which it runs are secure and trusted, and the application running in TEE is called Trusted Application (TA).
  • TA Trusted Application
  • REE is a rich application system running environment. It runs a lot of software and hardware resources and is open to applications, so it is also not safe.
  • a video playing application module is included on the REE side, which is responsible for acquiring a video code stream, and transmitting a watermarking watermarking strategy and a video code stream to the TEE side.
  • the TEE side includes Digital Rights Management (DRM) module and display
  • DRM Digital Rights Management
  • the driving module, the watermark marking circuit and the video display circuit are shown.
  • the DRM module is configured to decrypt the watermark policy, and the watermarking policy is configured by the display driver module to the watermarking circuit.
  • the DRM module controls the watermarking circuit to open the watermark switch by the display driving module, and the watermarking strategy is When no watermark is applied, the DRM module controls the watermark marking circuit to turn off the watermark switch through the display driver module.
  • the DRM module is also used to receive a video stream and transmit the video stream to a video display circuit.
  • the display driver module executes a display driver to ensure video stream output of the video display circuit. After the video stream output by the video display circuit reaches the watermark marking circuit, the watermark marking circuit configures watermarking according to the watermarking strategy of the DRM module.
  • the watermark marking circuit When the watermark switch is turned on, the watermark marking circuit will watermark the video stream after receiving the video stream. When the watermark switch is turned off, the watermark marking circuit does not watermark the video stream after receiving the video stream, wherein the module included in the TEE is TA.
  • the DRM module controls a plurality of watermark marking circuits to turn on or off the watermark switch.
  • each watermark marking circuit applies the same watermark to the received video stream, and the watermark processing The method is single.
  • the embodiment of the present invention provides a video watermark processing method, which can apply different watermark information to different video streams, thereby improving security.
  • Embodiments of the present invention also provide corresponding devices.
  • a first aspect of the present invention provides a video watermark processing method, which is applied to a processor of a video terminal device, which may be a terminal device such as a set top box, a digital television, a personal computer, and a mobile phone, and the processor includes a safe operating environment TEE.
  • the N watermark marking circuits in the TEE are respectively used to receive N video streams, and N is an integer greater than 1.
  • the video watermark processing method includes:
  • a watermarking circuit receives one video stream in the N video stream, and each of the video streams in the N video stream respectively includes different watermarking strategies; for example, the video stream 0 includes the watermarking strategy A, and the video stream 1 includes the watermarking strategy.
  • B and video stream 2 include a watermark policy C;
  • a printing mark circuit determines the watermark information corresponding to the watermarking strategy in the received local video stream according to the correspondence between the pre-established watermarking policy and the watermark information
  • a watermarking circuit applies the watermark information corresponding to the current video stream to the video stream.
  • a method for video watermark processing determines watermark information for the video stream for a watermark policy in the video stream, thereby adding different watermark information to different video streams, and increasing the type of watermark information. Increased security.
  • the processor further includes an application-rich open operating environment REE
  • the REE includes a video playback application module
  • the TEE further includes N DRM modules for digital rights management DRM.
  • video tagging module
  • the first possible implementation manner further includes:
  • Each DRM module separately receives a single video stream in the N video streams transmitted by the video playback application module;
  • the video tagging module obtains a watermark policy corresponding to the identifier of each DRM module for the single channel video stream transmitted from each DRM module according to the correspondence between the identifier of the pre-established DRM module and the watermark policy, and obtains the N channel video stream. .
  • the video stream received by the DRM module does not include a watermarking policy
  • the video marking module implements a watermarking strategy for each single video stream according to the correspondence between the identifier of the pre-established DRM module and the watermarking policy, thereby implementing the watermarking strategy.
  • Different video streams can have different watermarking strategies, which increases the variety of watermarking strategies.
  • the second possible implementation manner before each DRM module separately receives a single video stream transmitted by the video playing application module, the second possible implementation manner is further include:
  • Each DRM module receives a different watermarking strategy transmitted by the video playback application module
  • the video tagging module establishes a correspondence between the identifier of the DRM module and the watermarking policy according to the watermarking policy transmitted by each DRM module.
  • the DRM module receives the watermark policy before receiving the video stream, thereby ensuring that the video tagging module can establish the correspondence between the identifier of the DRM module and the watermarking policy, thereby ensuring that the video tagging module can be a different video.
  • Different watermarking strategies on the stream tag are possible.
  • the watermark Watermark module for watermark policy configuration is also included in the TEE.
  • the third possible implementation manner further includes:
  • the Watermark module obtains different watermarking strategies from each DRM module, and respectively configures the watermarking policy set composed of different watermarking policies into each of the N watermarking circuits;
  • Each watermarking circuit configures corresponding watermark information for each watermarking policy in the watermarking policy set, and establishes a correspondence relationship between the watermarking policy and the watermarking information.
  • the Watermark module separately configures the watermarking policy set to each watermarking circuit, so that each watermarking circuit can establish a correspondence between each watermarking policy and the watermarking information in the watermarking policy set, which not only ensures each The video stream can be marked with different watermark information, and when the video stream suddenly changes the watermark marking circuit, the corresponding relationship between each watermarking strategy and the watermark information in the printing policy set can be correctly determined according to the watermark marking circuit after switching.
  • the watermark information ensures the accuracy of the watermark information when a sudden switch occurs.
  • the watermark policy set formed by different watermark policies in the Watermark module is respectively configured to each watermark marking circuit in the N watermark marking circuits.
  • the fourth possible implementation also included:
  • the Watermark module sets the priority for each watermarking policy
  • the Watermark module separately configures the watermark policy set composed of different watermark policies to each watermark marking circuit in the N watermark marking circuits, and specifically includes:
  • the Watermark module respectively configures a watermark policy set composed of different watermark policies with priorities to each of the N watermark marking circuits;
  • a watermarking circuit applies the watermark information corresponding to the current video stream to the video stream, including:
  • a watermarking circuit determines a watermarking strategy with the highest priority among the at least two watermarking strategies, and applies the watermark information corresponding to the highest priority watermarking strategy to the video stream.
  • the watermark information corresponding to the watermark policy with the highest priority can be ensured in the video stream, thereby improving the security of the watermark protection.
  • the TEE also includes a display driver module, and the Watermark module respectively configures a watermark policy set composed of different watermark policies to each watermark marking circuit, including:
  • the Watermark module separately configures the watermark policy set composed of different watermark policies to each watermark marking circuit through the display driver module.
  • a second aspect of the present invention provides a video watermark processing method, which is applied to a processor of a video terminal device, where the processor includes an application-rich open running environment REE and a trusted secure operating environment TEE, and the EE includes a video playing application module.
  • the TEE further includes a plurality of DRM modules for digital rights management DRM, a watermark Watermark module for watermark policy configuration, and a plurality of watermark marking circuits;
  • Each DRM module receives a plurality of different watermark policies sent by the video playback application module;
  • the Watermark module determines the highest priority watermarking strategy among the plurality of different watermarking policies, and configures the highest priority watermarking policy to each watermarking circuit;
  • the watermark marking circuit applies the watermark information corresponding to the highest priority watermarking strategy to the received video stream.
  • the video watermark processing method provided by the second aspect of the present invention adds watermark information corresponding to the watermarking strategy with the highest priority to each video stream, thereby greatly improving the security of the watermark protection.
  • a third aspect of the present invention provides a device for video watermark processing, which is configured to implement the functions of the method provided by the above first aspect, implemented by hardware/software, and the hardware/software includes a unit corresponding to the above function. .
  • a fourth aspect of the present invention provides a computer storage medium storing the program of the video watermark processing of the first aspect or any of the alternative implementations of the first aspect.
  • FIG. 1 is a schematic diagram of an embodiment of a watermark processing architecture in a processor in the prior art
  • FIG. 2 is a block diagram of a watermark processing architecture in a processor of a video terminal device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of another embodiment of a watermark processing architecture in a processor of a video terminal device according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another embodiment of a watermark processing architecture in a processor of a video terminal device according to an embodiment of the present invention.
  • the embodiments of the present invention provide a video watermark processing method, which can add different watermark information to different video streams, thereby improving security.
  • Embodiments of the present invention also provide corresponding devices. The details are described below separately.
  • the video terminal device provided by the embodiment of the present invention may be a terminal device such as a set top box, a digital television, a personal computer, and a mobile phone.
  • the apparatus for video watermark processing in the embodiment of the present invention may be a processor in a video terminal device.
  • an embodiment of a processor in a video terminal device for video watermarking processing includes:
  • the REE includes a video playback application (Player) module.
  • the TEE includes a watermark for watermark policy configuration.
  • Watermark module, Video mark module, multiple DRM modules for Digital Rights Management (DRM) and multiple Watermark marking circuits for example: DRM module in Figure 2 (A) DRM module (B) and DRM module (C) three DRM modules, Watermark0 circuit, Watermark1 circuit, Watermark2 circuit and Watermark3 circuit four Watermark circuits, and TEE can also include Display Driver module and more Video display circuit, for example: Video corresponding to Watermark0 circuit Display0 circuit, Video Display1 circuit corresponding to Watermark1 circuit, Video Display2 circuit corresponding to Watermark2 circuit, Video Display3 circuit corresponding to Watermark3 circuit, each Watermark circuit corresponds to a Video Display circuit, and the video output from the Video Display circuit flows to The corresponding Watermark circuit is watermarked.
  • the above three DRM modules and four Watermark circuits are only illustrated by the scenario shown in FIG. 2.
  • there may be M Watermark circuits N DRM modules may have N, and M and N are integers greater than 1. And M is not less than N.
  • the Watermark circuit and the Video Display circuit are realized by hardware. Multiple Watermark circuits and Video Display circuits can be set during production.
  • the DRM module is implemented by a software program and can be dynamically configured according to the actual number of video streams. DRM module, each DRM module will correspond to a Watermark circuit and Video Display. Therefore, from Figure 2, there are 4 channels of Watermark circuit and Video Display circuit, 3 DRM modules, 3 video streams, watermark1 circuit and Video Display1.
  • the circuit can provide a watermark service for the newly added DRM module when there is a new DRM module.
  • the N Watermark circuits are respectively used to receive one video stream in the N video streams, and each of the video streams respectively includes different watermark strategies;
  • the Watermark circuit is configured to determine the watermark information corresponding to the watermarking strategy in the received local video stream according to the correspondence between the pre-established watermarking policy and the watermark information;
  • the watermark circuit is configured to apply the watermark information corresponding to the local video stream to the local video stream.
  • each DRM module receives the protection strategy of the corresponding video stream from the Player module before receiving the video stream from the Player module.
  • the protection policy includes a watermark policy, and may also include other protection policies, such as keys and certificates. Etc., the embodiment of the present invention focuses on the processing of the watermark, so only And watermarking strategy.
  • the watermarking strategy may include the size of the watermark and the description information of the watermark pattern, and the like.
  • each DRM module may be the same or different. Generally, the watermarking strategies of the DRM modules are different. Each DRM module typically receives a watermark policy, but it is also possible to receive two or more watermarking policies.
  • each DRM module After receiving the watermark policy, each DRM module transmits the received watermark policy to the Watermark module.
  • the Watermark module is configured to acquire the different watermark policies from each DRM module, and configure a watermark policy set composed of the different watermark policies to each watermark marking circuit;
  • Each Watermark circuit is configured to configure corresponding watermark information for each watermark policy in the watermark policy set, and establish a correspondence between the watermark policy and the watermark information.
  • all the watermark policies acquired by the Watermark module can be understood as a watermark policy set, and the Watermark module configures the watermark policy set to each Watermark circuit separately.
  • the watermark policy set may include three watermark strategies: a watermark policy A, a watermark policy B, and a watermark policy C.
  • Each Watermark circuit configures corresponding watermark information for each watermark policy in the watermark policy set, that is, establishes a correspondence between the watermark policy and the watermark information.
  • the process of establishing the correspondence between the watermarking policy and the watermark information may be to match the watermark information preset by the Watermark circuit according to the description information of the watermarking strategy, for example, the watermarking strategy is a lotus pattern, and the square side length is 2 mm, which may be stored from the pre-stored The watermark information of the square lotus pattern with a side length of 2 mm is matched in the watermark information, and then the correspondence between the two is established.
  • Each Watermark circuit establishes a correspondence between each watermark policy and corresponding watermark information in the watermark policy set.
  • the correspondence between the watermarking strategy and the corresponding watermark information can be understood by referring to Table 1.
  • Table 1 only uses watermarking strategy A, watermarking strategy B and watermarking strategy C as examples.
  • each Watermark circuit will be based on the watermark.
  • the watermark policy actually included in the policy set is established in the form shown in Table 1.
  • Watermarking strategy Watermark information Watermarking strategy A (2 mm, pattern is lotus) 2 mm lotus pattern Watermarking strategy B (3 mm, pattern is rabbit) 3 mm rabbit pattern Watermarking strategy C (4 mm, pattern is the character avatar) 4 mm character avatar pattern
  • each of the DRM modules is further configured to separately receive different watermark policies transmitted by the video playing application module before receiving the single video stream transmitted by the video playing application module, respectively.
  • the Video mark module is configured to establish a correspondence between an identifier of the DRM module and a watermark policy according to the watermarking policy transmitted by each DRM module.
  • the Video mark module also obtains a watermark policy from each DRM module and establishes a correspondence between the identifier of the DRM module and the corresponding watermark policy, for example, from the DRM module (A), the DRM module (B), and the DRM module ( C)
  • the watermarking strategy A, the watermarking strategy B and the watermarking strategy C are respectively obtained, and the correspondence between the watermarking strategy as shown in Table 2 and the identifier of the corresponding DRM module can be established.
  • Watermarking strategy ID of the DRM module Watermarking strategy A DRM(A) Watermarking strategy B DRM(B) Watermarking strategy C DRM(C)
  • Table 2 is only an enumeration description of the scenario shown in FIG. 2.
  • TRM modules are included in the TEE or multiple watermark policies are included in each DRM module, the form is established according to the actual scenario. Correspondence between the displayed watermarking strategy and the identity of the DRM module.
  • Each DRM module is configured to separately receive a single video stream transmitted by the video playing application module;
  • the video tagging module is configured to mark, on the single-channel video stream transmitted from each DRM module, an identifier of each DRM module according to a correspondence between an identifier of a pre-established DRM module and a watermark policy. Corresponding watermarking strategy, the multi-channel video stream is obtained.
  • each DRM module is also used to receive the video stream transmitted by the Player module, if The video stream of each DRM module is understood to be a video stream.
  • DRM module A
  • DRM module B
  • DRM module C
  • the Player module sends Three video streams, which can be sent simultaneously by the Player module, can be different video content on the same screen in the Picture In Picture (PIP) screen.
  • PIP Picture In Picture
  • the three-way video stream flows into the Video mark module from the DRM module (A), the DRM module (B), and the DRM module (C), and the Video mark module according to the correspondence between the watermark policy established above and the identifier of the DRM module. Mark each video stream with a corresponding watermark policy.
  • the Video mark module can The watermarking strategy A is marked in video stream 0, the watermarking policy B is marked in video stream 1, and the watermarking policy C is marked in video stream 2.
  • the Watermark3 circuit receives the video stream 0 and determines that the watermark policy is the watermark policy A.
  • the watermark information corresponding to the watermark policy A is determined to be a 2 mm lotus pattern from the correspondence between the watermark policy and the watermark information shown in Table 1, for example. Then, the Watermark3 circuit block puts watermark information of the 2 mm lotus pattern for the video stream 0.
  • the Watermark0 circuit receives the video stream 1 and determines that the watermark policy is the watermark policy B. Then, the watermark information corresponding to the watermark policy B is determined to be a 3 mm rabbit pattern from the correspondence between the watermark policy and the watermark information shown in Table 1, for example. Then, the Watermark0 circuit puts the watermark information of the 3 mm rabbit pattern into the video stream 1.
  • the Watermark2 circuit receives the video stream 2 and determines that the watermark policy is the watermark policy C. Then, the corresponding watermark information is determined as a 4 mm character avatar pattern from the correspondence between the watermark policy and the watermark information shown in Table 1, for example, Watermark 2
  • the circuit block is watermarked for the video stream 2 with a 4 mm character avatar pattern.
  • Marking the watermarking strategy in the video stream not only ensures that the corresponding video stream is marked with corresponding watermark information, but also avoids the case where the video stream suddenly switches the watermarking circuit to mistype the watermark information.
  • the Watermark3 circuit will always print the watermark information of the video stream 0 is 2 mm lotus pattern, if on the screen The video content of the video content is switched, and the video content of the main window is switched to the content of the video stream 1.
  • the video stream 1 needs to print the watermark information by the Watermark3 circuit, and the Watermark3 circuit prints the watermark information for the video stream 0 before. Always a 2 mm lotus pattern. If the watermarking strategy is changed to the watermarking strategy B when reading the watermarking strategy of video stream 1, then the new watermarking information is determined to be a 3 mm rabbit pattern, and the video stream 1 is 3 mm. The watermark information of the rabbit pattern avoids the wrong watermark situation.
  • the Watermark module is further configured to set a priority for each watermark policy before configuring the watermark policy set formed by the different watermark policies to the watermark marking circuits, and specifically for setting a priority
  • the set of watermark policies formed by the different watermark policies are respectively configured to the watermark marking circuits;
  • the watermarking policy A has the highest priority
  • the watermarking policy B has the lower priority
  • the watermarking strategy C has the lowest priority
  • each Watermark circuit determines the highest priority watermarking policy for the received video stream when watermarking the received video stream, and applies the highest priority watermark to the received video stream. Watermark information corresponding to the policy.
  • the watermark information corresponding to the watermarking strategy A is marked.
  • the watermarking strategy in the video stream 2 is the watermarking strategy C, but Watermark2
  • the module will still paste the watermark information of the 2 mm lotus pattern corresponding to the watermarking strategy A for the video stream 2.
  • Another priority usage scheme is: when the video stream received by the Watermark circuit includes at least two watermark policies, determining a watermark policy with the highest priority among the at least two watermark policies for the received video stream, And the watermark information corresponding to the highest priority watermarking policy is marked for the received video stream.
  • the Watermark circuit determines that the watermarking policy A has a higher priority than the watermarking policy B, and the Watermark circuit applies the watermarking strategy A to the received video stream. Watermark information. If video stream 0 contains watermark policy B and watermark strategy In C, the Watermark circuit determines that the watermarking policy B has a higher priority than the watermarking policy C, and the Watermark circuit applies the watermark information corresponding to the watermarking policy B to the received video stream.
  • the Watermark module is specifically configured to separately configure, by the display driving module, a watermark policy set composed of the watermark policies to each watermark marking circuit.
  • a watermarking strategy is written in a video stream, and different methods may be provided by different DRM vendors, and a corresponding reading function is provided. In this way, each DRM vendor can also be isolated from each other.
  • the video terminal device of the watermark processing provided by the embodiment of the present invention can support complex scenarios such as PIP, and the multi-channel video stream has different watermarking strategies, and ensures a one-to-one correspondence, thereby improving the security of the video stream.
  • Each watermarking strategy and video stream binding can ensure that the watermarking strategy is accurate and conforms to the interests of the content protection vendor.
  • an embodiment of a method for video watermark processing is applied to a processor of a video terminal device, where the processor includes a TEE and a REE, and the REE includes a Player module, where the TEE includes The Watermark module, the Video mark module, the N DRM modules, and the N Watermark circuits configured by the watermark policy can receive at least N video streams with N DRM modules, and N is an integer greater than 1.
  • Figure 4 has DRM module (1), DRM module covered and DRM module (N), N DRM modules, Watermark0 circuit, Watermark1 circuit, Watermark extended circuit and WatermarkN circuit, N Watermark circuits,
  • the TEE can also include a Display Driver module and a plurality of Video Display circuits, each of which corresponds to a Video Display circuit, and the video stream displayed on the Video Display circuit is watermarked in the corresponding Watermark circuit.
  • the Player module, each DRM module, Video mark module, Display Driver module and Watermark module can all be implemented by a program, that is, the processor calls a program stored in the memory to implement the functions of these modules.
  • Both the Watermark circuit and the Video Display circuit can be implemented by hardware logic circuits.
  • One watermark marking circuit for the N watermark marking circuits is N watermark marking circuits
  • a watermarking circuit is configured to receive one video stream in the N video streams, where each of the N video streams includes different watermarking strategies;
  • a printing mark circuit is used for determining the correspondence between the watermarking strategy and the watermark information according to the pre-established watermarking Determining the watermark information corresponding to the watermarking strategy in the received video stream;
  • a watermark marking circuit is configured to apply the watermark information corresponding to the local video stream to the local video stream.
  • the video stream received in the Watermark circuit is transmitted by the Video mark module, but the source of the N video stream is transmitted by the video playback application module in the REE to each DRM module, and each DRM module receives the video
  • the video playback application module transmits a single video stream, and then each DRM module transmits each single video stream to the Video mark module, and the Video mark module is based on the correspondence between the identifier of the pre-established DRM module and the watermark policy.
  • the watermark policy corresponding to the identifier of each DRM module is sent to the single video stream that is sent by each DRM module, and the N video streams received by the N Watermark circuits are obtained.
  • the two correspondences are mentioned in the above description, one is the correspondence between the watermark policy and the watermark information, and the other is the correspondence between the identifier of the DRM module and the watermarking strategy.
  • the two correspondences are not pre-stored in In the Watermark circuit and the Video mark module, it is built by the Watermark circuit and the Video mark module before receiving the video stream.
  • each DRM module Before receiving the single-channel video stream transmitted by the video playing application module, each DRM module separately receives different watermarking policies transmitted by the video playing application module; the Video mark module transmits according to each DRM module.
  • the watermarking strategy establishes a correspondence between the identifier of the DRM module and the watermarking policy.
  • the watermark module acquires the different watermarking policies from each of the DRM modules, and respectively configures the watermarking policy set formed by the different watermarking policies into each watermarking circuit; the respective watermarking circuits are the watermarking strategies Each watermark policy in the set configures corresponding watermark information, and establishes a correspondence between the watermark policy and the watermark information.
  • the Watermark module separately configures the watermark policy set composed of the different watermark policies before the watermark marking circuits, and may also set a priority for each watermarking policy, and then the Watermark module will set the priority.
  • the set of watermarking policies formed by the different watermarking policies are respectively configured to the watermark marking circuits; when the local video stream includes at least two watermarks In the policy, the watermarking circuit that receives the video stream determines a watermarking policy with the highest priority among the at least two watermarking policies, and applies the watermarking information corresponding to the watermarking policy with the highest priority to the local video stream. .
  • the method for the video watermark processing provided by the embodiment of the present invention can be understood by referring to the description of the device for the video watermark processing in FIG. 2 and FIG. 3, and details are not repeatedly described herein.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: ROM, RAM, disk or CD.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

本发明公开了一种视频水印处理的方法，应用于视频终端设备的处理器，处理器包括可信任的安全运行环境TEE，TEE中的N个水印标记电路用于分别接收N路视频流，N为大于1的整数，针对N个水印标记电路中的一个水印标记电路，视频水印处理的方法包括：一个水印标记电路接收N路视频流中的一路视频流，N路视频流中的各路视频流分别包含不同的水印策略，根据预先建立的水印策略与水印信息的对应关系，确定接收到的本路视频流中水印策略所对应的水印信息；为本路视频流打上本路视频流对应的水印信息。本发明实施例还提供相应的视频水印处理的方法，可以为不同的视频流加入不同的水印信息，增加了水印信息的种类，提高了安全性。

Description

一种视频水印处理的方法及装置
本申请要求于2016年1月28日提交中国专利局、申请号为201610058788.0、发明名称为“一种视频水印处理的方法及装置”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
本发明涉及视频处理技术领域，具体涉及一种视频水印处理的方法及装置。
背景技术
随着视频编解码技术的演进以及人们对更高品质视觉画面的不断追求，高清(High-Definition，HD)、全高清(Full High-Definition，FHD)和超高清(Ultra High-Definition，UHD)等高分辨率视频已经逐渐走进公众视野并迅速推广。由于高品质的视频制作成本高昂，版权保护已形成业界共识并不断加强。以电影实验室(Movie Labs)为代表的组织已制定出相应的安全规范，其中对终端设备的视频输出必须采用高带宽数字内容保护(High-bandwidth Digital Content Protection，HDCP)技术进行保护。
在HDCP技术中，数字水印是一种常用的保护技术。数字水印是向数据多媒体，例如：图像、声音和视频流中添加某些数字信息以达到文件真伪鉴别、版权保护等功能。
全球平台(Global Platform)标准协会针对数字版权管理(Digital Rights Management，DRM)解决方案在处理器中定义了可信任的安全运行环境(Trusted Execution Environment，TEE)和应用丰富的开放运行环境(Rich Execution Environment，REE)两个运行环境。TEE是一个可信任的安全运行环境，运行其中的软硬件资源都是安全可信的，并且运行在TEE中的应用称为可信应用(Trusted Application，TA)。REE是丰富的应用系统运行环境，运行其中的软硬件资源非常多并且对应用程序开放，因而也是不安全的。
参阅图1，现有视频播放水印处理技术中，在REE侧包括视频播放应用模块，负责获取视频码流，并传送是否打水印的水印策略和视频码流给TEE侧。TEE侧包括数字版权管理(Digital Rights Management，DRM)模块、显 示驱动模块、水印标记电路和视频显示电路。其中，DRM模块用于解密水印策略，并通过显示驱动模块将水印策略配置给水印标记电路，在水印策略为打水印时，DRM模块通过显示驱动模块控制水印标记电路打开水印开关，在水印策略为不打水印时，DRM模块通过显示驱动模块控制水印标记电路关闭水印开关。DRM模块还用于接收视频流，并将视频流传输给视频显示电路。显示驱动模块在视频显示电路接收到视频流时，执行显示驱动程序，确保视频显示电路的视频流输出。视频显示电路输出的视频流到达水印标记电路后，水印标记电路按照DRM模块的水印策略配置打水印。在水印开关打开时，则水印标记电路在接收到视频流后，就会为该视频流打上水印。在水印开关关闭时，水印标记电路在接收到视频流后，不会为该视频流打水印，其中，TEE中包括的模块即为TA。
上述现有技术提供的水印处理流程中，DRM模块控制多个水印标记电路打开或关闭水印开关，在水印开关处于打开状态时，每个水印标记电路对接收的视频流打上同一种水印，水印处理方式单一。
发明内容
为了解决现有技术中水印处理单一的问题，本发明实施例提供一种视频水印处理的方法，可以为不同的视频流打上不同的水印信息，从而提高了安全性。本发明实施例还提供了相应的装置。
本发明第一方面提供一种视频水印处理的方法，应用于视频终端设备的处理器，该视频终端设备可以是机顶盒、数字电视、个人计算机和手机等终端设备，该处理器包括安全运行环境TEE，该TEE中的N个水印标记电路用于分别接收N路视频流，N为大于1的整数，针对N个水印标记电路中的一个水印标记电路，视频水印处理的方法包括：
一个水印标记电路接收N路视频流中的一路视频流，N路视频流中的各路视频流分别包含不同的水印策略；例如：视频流0中包含水印策略A、视频流1中包含水印策略B和视频流2中包含水印策略C；
一个印标记电路根据预先建立的水印策略与水印信息的对应关系，确定接收到的本路视频流中水印策略所对应的水印信息
一个水印标记电路为本路视频流打上本路视频流对应的水印信息。
本发明第一方面提供的一种视频水印处理的方法，针对视频流中的水印策略为该视频流确定水印信息，从而可以为不同的视频流加入不同的水印信息，增加了水印信息的种类，提高了安全性。
结合第一方面，在第一种可能的实现方式中，处理器还包括应用丰富的开放运行环境REE，REE中包括视频播放应用模块，TEE中还包括N个用于数字版权管理DRM的DRM模块和视频标记模块，
在一个水印标记电路接收N路视频流中的一路视频流之前，第一种可能的实现方式还包括：
每个DRM模块分别接收视频播放应用模块传输来的N路视频流中的单路视频流；
视频标记模块根据预先建立的DRM模块的标识和水印策略的对应关系，为从每个DRM模块传输来的单路视频流标记上与每个DRM模块的标识对应的水印策略，得到N路视频流。
该可选的实现方式，DRM模块接收到的视频流是不包含水印策略的，视频标记模块根据预先建立的DRM模块的标识和水印策略的对应关系为各单视频流打上水印策略，从而实现了不同的视频流可以具有不同的水印策略，从而增加了水印策略的种类。
结合第一方面第一种可能的实现方式，在第二种可能的实现方式中，在每个DRM模块分别接收视频播放应用模块传输来的单路视频流之前，第二种可能的实现方式还包括：
每个DRM模块分别接收视频播放应用模块传输来的不同的水印策略；
视频标记模块根据每个DRM模块传输来的水印策略，建立DRM模块的标识和水印策略的对应关系。
该可选的实现方式，DRM模块在接收视频流前，先接收水印策略，从而确保了视频标记模块可以建立DRM模块的标识和水印策略的对应关系，进而确保了视频标记模块可以为不同的视频流标记上不同的水印策略。
结合第一方面第一种或第二种可能的实现方式，在第三种可能的实现方式 中，TEE中还包括用于水印策略配置的水印Watermark模块，第三种可能的实现方式还包括：
Watermark模块从每个DRM模块获取不同的水印策略，并将不同的水印策略所组成的水印策略集合分别配置到N个水印标记电路中的每水印标记电路；
每个水印标记电路为水印策略集合中的每个水印策略配置对应的水印信息，建立水印策略与水印信息的对应关系。
该可选的实现方式，Watermark模块将水印策略集合分别配置到各水印标记电路，从而使每个水印标记电路都可以建立水印策略集合中每个水印策略与水印信息的对应关系，不仅保证了各视频流可以打上不同的水印信息，而且在视频流突然发生水印标记电路切换时，也可以根据在切换后的水印标记电路上根据印策略集合中每个水印策略与水印信息的对应关系打上正确的水印信息，确保了突然发生切换时，水印信息的准确性。
结合第一方面第三种可能的实现方式，在第四种可能的实现方式中，在Watermark模块将不同的水印策略所组成的水印策略集合分别配置到N个水印标记电路中的每水印标记电路之前，第四种可能的实现方式还包括：
Watermark模块为每个水印策略设置优先级；
Watermark模块将不同的水印策略所组成的水印策略集合分别配置到N个水印标记电路中的每水印标记电路，具体包括：
Watermark模块将设置有优先级的不同的水印策略所组成的水印策略集合分别配置到N个水印标记电路中的每水印标记电路；
一个水印标记电路为本路视频流打上本路视频流对应的水印信息，包括：
当本路视频流中包含至少两个水印策略时，一个水印标记电路确定至少两个水印策略中优先级最高的水印策略，并为本路视频流打上优先级最高的水印策略对应的水印信息。
该可选的实现方式，当视频流中包含至少两个水印策略时，可以确保视频流中打上优先级最高的水印策略对应的水印信息，从而提高了水印保护的安全度。
结合第一方面第一种或第三种可能的实现方式，在第五种可能的实现方式 中，TEE中还包括显示驱动模块，Watermark模块将不同的水印策略所组成的水印策略集合分别配置到各水印标记电路，包括：
Watermark模块通过显示驱动模块将不同的水印策略所组成的水印策略集合分别配置到各水印标记电路。
本发明第二方面提供一种视频水印处理的方法，应用于视频终端设备的处理器，处理器包括应用丰富的开放运行环境REE和可信任的安全运行环境TEE，EE中包括视频播放应用模块，TEE中还包括多个用于数字版权管理DRM的DRM模块、用于水印策略配置的水印Watermark模块和多个水印标记电路；
各DRM模块接收视频播放应用模块发送的多个不同的水印策略；
Watermark模块确定多个不同的水印策略中优先级最高的水印策略，并将优先级最高的水印策略配置给各水印标记电路；
水印标记电路为接收到的视频流打上优先级最高的水印策略对应的水印信息。
本发明第二方面所提供的视频水印处理的方法，为每个视频流都打上优先级最高的水印策略对应的水印信息，大大提高了水印保护的安全性。
本发明第三方面提供一种视频水印处理的装置，该视频水印处理的装置被配置实现上述第一方面提供的方法的功能，由硬件/软件实现，其硬件/软件包括与上述功能相应的单元。
本发明第四方面提供一种计算机存储介质，该计算机存储介质存储有上述第一方面或第一方面任一可选的实现方式的视频水印处理的程序。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术中处理器中水印处理架构的一实施例示意图；
图2是本发明实施例中视频终端设备的处理器中水印处理架构的一实施例 示意图；
图3是本发明实施例中视频终端设备的处理器中水印处理架构的另一实施例示意图；
图4是本发明实施例中视频终端设备的处理器中水印处理架构的另一实施例示意图。
具体实施方式
本发明实施例提供本发明实施例提供一种视频水印处理的方法，可以为不同的视频流加入不同的水印信息，从而提高了安全性。本发明实施例还提供了相应的装置。以下分别进行详细说明。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供的视频终端设备可以是机顶盒、数字电视、个人计算机和手机等终端设备。
本发明实施例中用于本发明实施例视频水印处理的装置可以是视频终端设备中的处理器。
参阅图2，本发明实施例提供的用于本发明实施例视频水印处理的视频终端设备中的处理器一实施例包括：
可信任的安全运行环境(Trusted Execution Environment，TEE)和应用丰富的开放运行环境(Rich Execution Environment，REE)，REE中包括视频播放应用(Player)模块，TEE中包括用于水印策略配置的水印(Watermark)模块、视频标记(Video mark)模块、多个用于数字版权管理(Digital Rights Management，DRM)的DRM模块和多个水印(Watermark)标记电路，例如：图2中有DRM模块(A)、DRM模块(B)和DRM模块(C)三个DRM模块，有Watermark0电路、Watermark1电路、Watermark2电路和Watermark3电路四个Watermark电路，而且，TEE中还可包括显示驱动(Display Driver)模块和多个视频显示(Video Display)电路，例如：与Watermark0电路对应的Video  Display0电路，与Watermark1电路对应的Video Display1电路，与Watermark2电路对应的Video Display2电路，与Watermark3电路对应的Video Display3电路，每个Watermark电路都会对应一个Video Display电路，在Video Display电路输出的视频流到对应的Watermark电路打水印。其中，Player模块、每个DRM模块、Video mark模块、Display Driver模块和Watermark模块都可以依靠程序来实现。Watermark电路和Video Display电路都可以通过硬件逻辑电路来实现。
上述的三个DRM模块和四个Watermark电路只是结合图2所示的场景做的举例说明，实际上，Watermark电路可以有M个，DRM模块可以有N个，M和N都是大于1的整数，且M不小于N。
需要说明的是，Watermark电路和Video Display电路是靠硬件实现的，生产时可以设置多个Watermark电路和Video Display电路，DRM模块是靠软件程序实现的，可以根据实际的视频流的数量需求动态配置DRM模块，每个DRM模块会对应一个Watermark电路和Video Display，所以，从图2上看Watermark电路和Video Display电路有4路，DRM模块有3个，视频流有3个，watermark1电路和Video Display1电路可以在有新增DRM模块时，为该新增DRM模块提供水印服务。
Watermark电路在视频流进行水印处理的过程中，N个Watermark电路用于分别接收N路视频流中的一路视频流，各路视频流中分别包含不同的水印策略；
针对N个Watermark电路中的任意一个Watermark电路，都可以执行如下过程：
Watermark电路用于根据预先建立的水印策略与水印信息的对应关系，确定接收到的本路视频流中水印策略所对应的水印信息；
Watermark电路用于为所述本路视频流打上所述本路视频流对应的水印信息。
实际上，每个DRM模块在从Player模块接收视频流之前，会从Player模块先接收对应视频流的保护策略，保护策略中会包含水印策略，当然也可以包括其他保护策略，如密钥和证书等，本发明实施例侧重对水印的处理，所以只涉 及水印策略。
水印策略可以包括水印的大小和水印图案的描述信息等。
每个DRM模块接收的水印策略可以相同，也可以不同，通常情况下各DRM模块的水印策略是不同的。每个DRM模块通常会接收到一个水印策略，但也有可能接收到两个或多个水印策略。
每个DRM模块接收到水印策略后，会将接收到的水印策略传输给Watermark模块。
Watermark模块用于从所述每个DRM模块获取所述不同的水印策略，并将所述不同的水印策略所组成的水印策略集合分别配置到每个水印标记电路；
每个Watermark电路用于为所述水印策略集合中的每个水印策略配置对应的水印信息，建立所述水印策略与水印信息的对应关系。
也就是说，可以将Watermark模块获取到的所有水印策略理解为是一个水印策略集合，Watermark模块将该水印策略集合分别配置到每个Watermark电路。如图2中，有三个DRM模块，则水印策略集合中会至少有三个水印策略，例如水印策略集合可以包括水印策略A、水印策略B和水印策略C三个水印策略。
每个Watermark电路会为水印策略集合中每个水印策略配置相应的水印信息，也就是建立水印策略与水印信息的对应关系。建立水印策略与水印信息的对应关系的过程可以是根据水印策略的描述信息去匹配Watermark电路预先设置的水印信息，例如：水印策略为荷花图案，正方形边长2毫米，则可以从预先存储的多个水印信息中匹配到边长2毫米的正方形荷花图案的水印信息，然后建立两者的对应关系。
每个Watermark电路都会建立水印策略集合中每个水印策略和相应水印信息的对应关系。水印策略和相应水印信息的对应关系可以参阅表1进行理解。当然，表1只是以水印策略A、水印策略B和水印策略C三个水印策略为例进行说明，当水印策略集合中包含更多的水印策略或者其他水印策略时，每个Watermark电路都会根据水印策略集合中实际包含的水印策略建立形式上如表1所示的对应关系。
表1：水印策略和水印信息的对应关系
水印策略 水印信息
水印策略A(2毫米、图案是荷花) 2毫米的荷花图案
水印策略B(3毫米、图案是兔子) 3毫米的兔子图案
水印策略C(4毫米、图案是人物头像) 4毫米的人物头像图案
另外，所述每个DRM模块还用于在分别接收所述视频播放应用模块传输来的单路视频流之前，分别接收所述视频播放应用模块传输来的不同的水印策略；
所述Video mark模块用于根据所述每个DRM模块传输来水印策略，建立所述DRM模块的标识和水印策略的对应关系。
也就是说，Video mark模块也会从每个DRM模块获取水印策略，并建立DRM模块的标识与相应水印策略的对应关系，例如：从DRM模块(A)、DRM模块(B)和DRM模块(C)分别获取到水印策略A、水印策略B和水印策略C，则可以建立如表2所示的水印策略和对应的DRM模块的标识的对应关系。
表2：水印策略和DRM模块的标识的对应关系
水印策略 DRM模块的标识
水印策略A DRM(A)
水印策略B DRM(B)
水印策略C DRM(C)
当然表2只是结合图2所示的场景做的列举说明，当TEE中包含更多个DRM模块或者每个DRM模块中包含多个水印策略时，则会根据实际场景建立形式上如表2所示的水印策略和DRM模块的标识的对应关系。
每个DRM模块用于分别接收所述视频播放应用模块传输来的单路视频流；
所述视频标记模块用于根据预先建立的DRM模块的标识和水印策略的对应关系，为从所述每个DRM模块传输来的所述单路视频流标记上与所述每个DRM模块的标识对应的水印策略，得到所述多路视频流。
也就是说，每个DRM模块还用于接收Player模块传输来的视频流，如果将 每个DRM模块的视频流理解为是一路视频流，则如图2中所示，有DRM模块(A)、DRM模块(B)和DRM模块(C)三个DRM模块，则表示Player模块发送了三路视频流，这三路视频流可以是Player模块同时发送的，可以是画中画(Picture In Picture，PIP)屏幕中同一屏幕中的不同视频内容。
三路视频流从DRM模块(A)、DRM模块(B)和DRM模块(C)三个DRM模块流入Video mark模块，Video mark模块会根据上述建立的水印策略和DRM模块的标识的对应关系，为每路视频流标记上对应的水印策略。
例如：当DRM模块(A)传输来的是时频流0、DRM模块(B)传输来的是时频流1，以及DRM模块(C)传输来的是视频流2，则Video mark模块可以在视频流0中标记上水印策略A、在视频流1中标记上水印策略B和在视频流2中标记上水印策略C。
Watermark3电路接收到视频流0，确定其中的水印策略为水印策略A，则可以从例如表1所示的水印策略和水印信息的对应关系中确定水印策略A对应的水印信息为2毫米荷花图案，则Watermark3电路块为视频流0打上2毫米荷花图案的水印信息。
Watermark0电路接收到视频流1，确定其中的水印策略为水印策略B，则可以从例如表1所示的水印策略和水印信息的对应关系中确定水印策略B对应的水印信息为3毫米兔子图案，则Watermark0电路为视频流1打上3毫米兔子图案的水印信息。
Watermark2电路接收到视频流2，确定其中的水印策略为水印策略C，则可以从例如表1所示的水印策略和水印信息的对应关系中确定对应的水印信息为4毫米人物头像图案，则Watermark2电路块为视频流2打上4毫米人物头像图案的水印信息。
在视频流中标记上水印策略，不仅可以确保为各路视频流打上相应的水印信息，而且，还可以避免当视频流突然切换了水印标记电路打错水印信息的情况。
例如：屏幕上同时有3个不同的视频内容，若主窗口播放的是视频流0，则Watermark3电路给视频流0一直打印的水印信息是2毫米荷花图案，若屏幕上的 视频内容发生了窗口切换，主窗口的视频内容切换成了视频流1的内容，则如图3所示，视频流1需要由Watermark3电路打印水印信息，Watermark3电路之前为视频流0打印的水印信息一直是2毫米荷花图案，若在读取视频流1的水印策略时，发现水印策略变成了水印策略B，则确定新的水印信息为3毫米的兔子图案，则为视频流1打上3毫米的兔子图案的水印信息，避免了打错水印的情况。
Watermark模块还用于在将所述不同的水印策略所组成的水印策略集合分别配置到所述各水印标记电路之前，为所述每个水印策略设置优先级，并具体用于将设置有优先级的所述不同的水印策略所组成的水印策略集合分别配置到所述各水印标记电路；
当所述本路视频流中包含至少两个水印策略时，确定所述至少两个水印策略中优先级最高的水印策略，并为所述本路视频流打上所述优先级最高的水印策略对应的水印信息。
例如：水印策略A的优先级最高，水印策略B的优先级次之，水印策略C的优先级最低。
这样，每个Watermark电路在为接收到的视频流打水印信息时，会为接收到的视频流确定优先级最高的水印策略，并为接收到的所述视频流打上所述优先级最高的水印策略对应的水印信息。
也就是说，当水印策略A的优先级最高时，不管视频流中的水印策略是什么，都会打上水印策略A对应的水印信息，例如：视频流2中的水印策略为水印策略C，但Watermark2模块还是会为视频流2打上水印策略A对应的2毫米荷花图案的水印信息。
另外一种优先级的使用方案是：当Watermark电路接收到的视频流中包含至少两个水印策略时，为接收到的视频流确定所述含至少两个水印策略中优先级最高的水印策略，并为接收到的所述视频流打上所述优先级最高的水印策略对应的水印信息。
例如：当视频流0中包含水印策略A和水印策略B时，Watermark电路确定水印策略A的优先级高于水印策略B，则Watermark电路为接收到的所述视频流打上所述水印策略A对应的水印信息。若视频流0中包含水印策略B和水印策略 C时，Watermark电路确定水印策略B的优先级高于水印策略C，则Watermark电路为接收到的所述视频流打上所述水印策略B对应的水印信息。
所述Watermark模块具体用于通过所述显示驱动模块将所述各水印策略所组成的水印策略集合分别配置到每个水印标记电路。
本发明实施例中在视频流中写入水印策略，可以由不同的DRM厂商提供不同的方法，并提供对应的读取函数。这样各个DRM厂商互相之间也可以做到隔离。
本发明实施例提供的水印处理的视频终端设备可以很好的支持PIP等复杂场景，做到多路视频流有不同的水印策略，并保证一一对应关系，提高了视频流的安全性高，各水印策略和视频流绑定，可以保证水印策略准确，符合内容保护厂商利益。
参阅图4，本发明实施例提供的视频水印处理的方法的一实施例应用于视频终端设备的处理器，处理器包括TEE和REE，所述REE中包括Player模块，所述TEE中包括用于水印策略配置的Watermark模块、Video mark模块、N个DRM模块和N个Watermark电路，有N个DRM模块即可以接收至少N个视频流，N都为大于1的整数。例如：图4中有DRM模块(1)、DRM模块(…)和DRM模块(N)，N个DRM模块，有Watermark0电路、Watermark1电路、Watermark(…)电路和WatermarkN电路，N个Watermark电路，而且，TEE中还可包括Display Driver模块和多个Video Display电路，每个Watermark电路都会对应一个Video Display电路，在Video Display电路显示的视频流要在对应的Watermark电路打水印。其中，Player模块、每个DRM模块、Video mark模块、Display Driver模块和Watermark模块都可以依靠程序来实现，即由处理器调用存储器中存储的程序来实现这些模块的功能。Watermark电路和Video Display电路都可以通过硬件逻辑电路来实现。
针对所述N个水印标记电路中的一个水印标记电路；
一个水印标记电路用于接收所述N路视频流中的一路视频流，所述N路视频流中的各路视频流分别包含不同的水印策略；
一个印标记电路用于根据预先建立的水印策略与水印信息的对应关系，确 定接收到的本路视频流中水印策略所对应的水印信息；
一个水印标记电路用于为所述本路视频流打上所述本路视频流对应的水印信息。
实际上，在Watermark电路中接收的视频流是Video mark模块传输来的，但N路视频流的源头是REE中的视频播放应用模块传输给每个DRM模块的，每个DRM模块分别接收所述视频播放应用模块传输来的单路视频流，然后每个DRM模块将各单路视频流传输给Video mark模块，Video mark模块根据预先建立的DRM模块的标识和水印策略的对应关系，为从所述每个DRM模块传输来的所述单路视频流标记上与所述每个DRM模块的标识对应的水印策略，得到所述N个Watermark电路接收的N路视频流。
在上述描述中提及了两个对应关系，一个是水印策略与水印信息的对应关系，另一个是DRM模块的标识和水印策略的对应关系，实际上，这两个对应关系并不是预先存储在Watermark电路和Video mark模块中的，而是在接收视频流前由Watermark电路和Video mark模块建立的。
建立DRM模块的标识和水印策略的对应关系的过程如下：
每个DRM模块分别接收所述视频播放应用模块传输来的单路视频流之前，会分别接收所述视频播放应用模块传输来的不同的水印策略；Video mark模块根据所述每个DRM模块传输来水印策略，建立所述DRM模块的标识和水印策略的对应关系。
建立水印策略与水印信息的对应关系的过程如下：
Watermark模块从所述每个DRM模块获取所述不同的水印策略，并将所述不同的水印策略所组成的水印策略集合分别配置到各水印标记电路；所述各个水印标记电路为所述水印策略集合中的每个水印策略配置对应的水印信息，建立所述水印策略与水印信息的对应关系。
另外，Watermark模块将所述不同的水印策略所组成的水印策略集合分别配置到所述各水印标记电路之前，还可以为所述每个水印策略设置优先级，然后，Watermark模块将设置有优先级的所述不同的水印策略所组成的水印策略集合分别配置到所述各水印标记电路；当所述本路视频流中包含至少两个水印 策略时，所述接收到视频流的水印标记电路确定所述至少两个水印策略中优先级最高的水印策略，并为所述本路视频流打上所述优先级最高的水印策略对应的水印信息。
本发明实施例提供的视频水印处理的方法可以参阅图2和图3部分视频水印处理的装置的描述进行理解，本处不再重复赘述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
以上对本发明实施例所提供的视频水印处理的方法以及装置，进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 一种视频水印处理的方法，其特征在于，所述方法应用于视频终端设备的处理器，所述处理器包括可信任的安全运行环境TEE，所述TEE中的N个水印标记电路用于分别接收N路视频流，所述N为大于1的整数，针对所述N个水印标记电路中的一个水印标记电路，所述方法包括：
    所述一个水印标记电路接收所述N路视频流中的一路视频流，所述N路视频流中的各路视频流分别包含不同的水印策略；
    所述一个印标记电路根据预先建立的水印策略与水印信息的对应关系，确定接收到的本路视频流中水印策略所对应的水印信息；
    所述一个水印标记电路为所述本路视频流打上所述本路视频流对应的水印信息。
  2. 根据权利要求1所述的方法，其特征在于，所述处理器还包括应用丰富的开放运行环境REE，所述REE中包括视频播放应用模块，所述TEE中还包括N个用于数字版权管理DRM的DRM模块和视频标记模块，
    所述一个水印标记电路接收所述N路视频流中的一路视频流之前，所述方法还包括：
    每个DRM模块分别接收所述视频播放应用模块传输来的所述N路视频流中的单路视频流；
    所述视频标记模块根据预先建立的DRM模块的标识和水印策略的对应关系，为从所述每个DRM模块传输来的所述单路视频流标记上与所述每个DRM模块的标识对应的水印策略，得到所述N路视频流。
  3. 根据权利要求2所述的方法，其特征在于，所述每个DRM模块分别接收所述视频播放应用模块传输来的单路视频流之前，所述方法还包括：
    所述每个DRM模块分别接收所述视频播放应用模块传输来的不同的水印策略；
    所述视频标记模块根据所述每个DRM模块传输来的水印策略，建立所述DRM模块的标识和水印策略的对应关系。
  4. 根据权利要求2或3所述的方法，其特征在于，所述TEE中还包括用于 水印策略配置的水印Watermark模块，所述方法还包括：
    所述Watermark模块从所述每个DRM模块获取所述不同的水印策略，并将所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路；
    所述每个水印标记电路为所述水印策略集合中的每个水印策略配置对应的水印信息，建立所述水印策略与水印信息的对应关系。
  5. 根据权利要求4所述的方法，其特征在于，所述Watermark模块将所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路之前，所述方法还包括：
    所述Watermark模块为所述每个水印策略设置优先级；
    所述Watermark模块将所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路，具体包括：
    所述Watermark模块将设置有优先级的所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路；
    所述一个水印标记电路为所述本路视频流打上所述本路视频流对应的水印信息，包括：
    当所述本路视频流中包含至少两个水印策略时，所述一个水印标记电路确定所述至少两个水印策略中优先级最高的水印策略，并为所述本路视频流打上所述优先级最高的水印策略对应的水印信息。
  6. 一种视频水印处理的装置，其特征在于，所述装置包括可信任的安全运行环境TEE，所述TEE中的N个水印标记电路用于分别接收N路视频流，所述N为大于1的整数，针对所述N个水印标记电路中的一个水印标记电路，所述装置包括：
    所述一个水印标记电路用于接收所述N路视频流中的一路视频流，所述N路视频流中的各路视频流分别包含不同的水印策略；
    所述一个印标记电路用于根据预先建立的水印策略与水印信息的对应关系，确定接收到的本路视频流中水印策略所对应的水印信息；
    所述一个水印标记电路用于为所述本路视频流打上所述本路视频流对应 的水印信息。
  7. 根据权利要求6所述的装置，其特征在于，所述装置还包括应用丰富的开放运行环境REE，所述REE中包括视频播放应用模块，所述TEE中还包括N个用于数字版权管理DRM的DRM模块和视频标记模块，
    每个DRM模块用于分别接收所述视频播放应用模块传输来的所述N路视频流中的单路视频流；
    所述视频标记模块用于根据预先建立的DRM模块的标识和水印策略的对应关系，为从所述每个DRM模块传输来的所述单路视频流标记上与所述每个DRM模块的标识对应的水印策略，得到所述N路视频流。
  8. 根据权利要求7所述的装置，其特征在于，
    所述每个DRM模块还用于在分别接收所述视频播放应用模块传输来的单路视频流之前，分别接收所述视频播放应用模块传输来的不同的水印策略；
    所述视频标记模块用于根据所述每个DRM模块传输来的水印策略，建立所述DRM模块的标识和水印策略的对应关系。
  9. 根据权利要求7或8所述的装置，其特征在于，所述TEE中还包括用于水印策略配置的水印Watermark模块，
    所述Watermark模块用于从所述每个DRM模块获取所述不同的水印策略，并将所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路；
    所述每个水印标记电路用于为所述水印策略集合中的每个水印策略配置对应的水印信息，建立所述水印策略与水印信息的对应关系。
  10. 根据权利要求9所述的装置，其特征在于，
    所述Watermark模块还用于在将所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路之前，为所述每个水印策略设置优先级，并具体用于将设置有优先级的所述不同的水印策略所组成的水印策略集合分别配置到所述N个水印标记电路中的每水印标记电路；
    所述一个水印标记电路具体用于当所述本路视频流中包含至少两个水印策略时，确定所述至少两个水印策略中优先级最高的水印策略，并为所述本路 视频流打上所述优先级最高的水印策略对应的水印信息。
PCT/CN2016/091568 2016-01-28 2016-07-25 一种视频水印处理的方法及装置 WO2017128655A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610058788.0 2016-01-28
CN201610058788.0A CN105721951B (zh) 2016-01-28 2016-01-28 一种视频水印处理的方法及装置

Publications (1)

Publication Number Publication Date
WO2017128655A1 true WO2017128655A1 (zh) 2017-08-03

Family

ID=56154401

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/091568 WO2017128655A1 (zh) 2016-01-28 2016-07-25 一种视频水印处理的方法及装置

Country Status (2)

Country Link
CN (1) CN105721951B (zh)
WO (1) WO2017128655A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11455757B2 (en) 2017-12-19 2022-09-27 Samsung Electronics Co., Ltd. Method and apparatus for reconstruction of original images from modified images

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105721951B (zh) * 2016-01-28 2018-12-25 华为技术有限公司 一种视频水印处理的方法及装置
CN106454182A (zh) * 2016-10-26 2017-02-22 维沃移动通信有限公司 一种视频生成方法及移动终端

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102842309A (zh) * 2008-03-14 2012-12-26 弗劳恩霍夫应用研究促进协会 将水印嵌入信息表示中的嵌入器、检测信息表示中的水印的检测器和方法
CN104079952A (zh) * 2014-07-09 2014-10-01 上海风格信息技术股份有限公司 一种嵌入标号水印的音视频传输流及其监测方法
EP2933745A1 (en) * 2014-04-14 2015-10-21 Samsung Electronics Co., Ltd Method and apparatus for downloadable DRM in a trusted execution environment
CN105208462A (zh) * 2015-09-23 2015-12-30 中国传媒大学 视频数字水印处理方法及执行该方法的视频数字水印系统
CN105721951A (zh) * 2016-01-28 2016-06-29 华为技术有限公司 一种视频水印处理的方法及装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860997B1 (en) * 1997-02-24 2008-12-10 Nec Corporation Digital data encode system
CA2260094C (en) * 1999-01-19 2002-10-01 Nec Corporation A method for inserting and detecting electronic watermark data into a digital image and a device for the same
DE60033500T2 (de) * 1999-11-23 2007-11-08 Koninklijke Philips Electronics N.V. Wasserzeicheneinbettung und -detektion
EP2797334A1 (en) * 2013-04-26 2014-10-29 Nagravision S.A. Method and device to embed watermark in uncompressed video data

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102842309A (zh) * 2008-03-14 2012-12-26 弗劳恩霍夫应用研究促进协会 将水印嵌入信息表示中的嵌入器、检测信息表示中的水印的检测器和方法
EP2933745A1 (en) * 2014-04-14 2015-10-21 Samsung Electronics Co., Ltd Method and apparatus for downloadable DRM in a trusted execution environment
CN104079952A (zh) * 2014-07-09 2014-10-01 上海风格信息技术股份有限公司 一种嵌入标号水印的音视频传输流及其监测方法
CN105208462A (zh) * 2015-09-23 2015-12-30 中国传媒大学 视频数字水印处理方法及执行该方法的视频数字水印系统
CN105721951A (zh) * 2016-01-28 2016-06-29 华为技术有限公司 一种视频水印处理的方法及装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11455757B2 (en) 2017-12-19 2022-09-27 Samsung Electronics Co., Ltd. Method and apparatus for reconstruction of original images from modified images

Also Published As

Publication number Publication date
CN105721951B (zh) 2018-12-25
CN105721951A (zh) 2016-06-29

Similar Documents

Publication Publication Date Title
RU2595263C1 (ru) Способ медийного взаимодействия, устройство и система осуществления конференц-связи в многопоточном режиме
CN106303430B (zh) 浏览器中无插件播放实时监控的方法
CN111031368B (zh) 多媒体播放方法、装置、设备及存储介质
US10728613B2 (en) Method and apparatus for content insertion during video playback, and storage medium
CN103841389B (zh) 一种视频播放方法及播放器
JP6398489B2 (ja) 情報処理プログラム、情報処理方法、及び情報処理装置
WO2017128655A1 (zh) 一种视频水印处理的方法及装置
TW201521432A (zh) 透過ｈｄｍｉ發送顯示管理元數據
WO2015139547A1 (zh) 一种设置应用场景的方法、设备和系统
US20170195617A1 (en) Image processing method and electronic device
US9826572B2 (en) Wireless enhanced projector
JP2016525317A5 (zh)
CN103888832A (zh) 一种播放终端接入数据源切换的处理方法和装置
WO2020233263A1 (zh) 音频处理方法及电子设备
WO2020030958A1 (zh) 一种添加水印的方法、装置、设备/终端/服务器以及存储介质
CN109992264A (zh) 窗口管理方法
CN108882055A (zh) 视频直播方法及系统、合成视频流的方法及装置
CN105577622B (zh) 为数字标牌分配用户分组的方法、装置和数字标牌系统
US20170161875A1 (en) Video resolution method and apparatus
US20130259444A1 (en) Method of managing multiple wireless video traffic and electronic device thereof
WO2017113817A1 (zh) 一种利用数字指纹技术保护视频的方法及装置
KR20130137147A (ko) 오디오/비디오 소스로부터의 오디오 및 비디오 스트림을 복수의 오디오/비디오 싱크로 매핑하기 위한 시스템 및 방법
US20160373685A1 (en) Video Controller, Playback Controller and Display System
CN104869457A (zh) 显示器、显示装置、播放器、播放装置及播放显示系统
WO2017000803A1 (zh) 一种实现应用的方法及业务控制器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16887533

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16887533

Country of ref document: EP

Kind code of ref document: A1