CN108551582A - Image and video data identification method and system - Google Patents

Abstract

The invention discloses an image and video data identification method and system. The method includes: for each image, when it is collected and generated, by reading local information to form the image's identification information, the The identity information includes at least image generation time, generation location, generation equipment, and digital signature; image encoding is performed on the identity information, the encoded image data contains the image identity information, and the unique identity of the image is obtained. Image ID. For video data, a video ID card describing video sequence information is formed from the image ID information of the key frame. The present invention designs a unique ID card for image and video data, and provides uniqueness, authority and security for image encoding and other processing, channel transmission and decoding reconstruction, time-space synchronization fusion analysis, traceability and anti-tampering, etc. , universal and private meta-information.

Description

Image and video data identification method and system

technical field

The present invention relates to a method and system for identification of image and video data, specifically, a method and system for identification of image and video data itself.

Background technique

According to the definition of the "Electronic Signature Law of the People's Republic of China", "an electronic signature refers to the data contained in electronic form in a data message and attached to identify the identity of the signatory and to indicate that the signatory approves the content." A means of authentication.

After searching the existing technologies, it is found that although there are already a large number of technologies related to data signatures, they all focus on verifying electronic signatures. There are few systems for identifying and authenticating image and video data itself. Although a small number of patent applications for generating data signatures for image data have been retrieved at present, their formation methods, methods, purposes and corresponding functions are completely different.

Such as Chinese patent application number: CN201110240715.0, patent name: a device and method for similarity judgment of multiple images based on digital signature; application number: CN201310039144.3, patent name: image file digital signature, and repeated image file judgment Methods and Apparatus. Both of the technologies disclosed in these two patents generate digital signatures through image feature extraction. In terms of purpose, the purpose of the two patent applications is to make similar judgments on multiple images, lacking time and location information for image acquisition, and unable to meet the requirements of video images. The application of data in the fields of associative storage, fusion analysis, traceability and anti-tampering.

Contents of the invention

Aiming at the current image and video data lacking a unique identity similar to an ID card, which restricts the application of video image data in the fields of associative storage, fusion analysis, traceability and anti-tampering, etc., the present invention defines a standardized identity information for video images to form The image ID card I2D or video ID card VID containing information such as data generation time, place, generator, and digital signature is used as a unique and standardized identity for image and video data. With this ID card, images and videos provide elements with uniqueness, authority, security, universality and privacy in terms of encoding processing, channel transmission and decoding reconstruction, time-space synchronization fusion analysis, traceability and anti-tampering. information.

In order to achieve the above object, the present invention adopts the following technical solutions.

According to a first aspect of the present invention, a method for identifying image data is provided, including:

Image identification generation step: obtain the information when each image is collected, and form the image identification (Image Identification, referred to as I2D), the identification information includes at least image generation time t, generation location p, generation equipment (MAC )ip, digital signature s;

Image encoding step: image encoding is performed on the identity mark, the encoded image data contains the image identity information, and an image identification card (Image Identification, I2D for short) is obtained as the unique identity mark of the image.

Preferably, the image generation time t and generation position p are obtained with globally unified timing and positioning information through the acquisition device's own GPS or Beidou timing positioning module, or other similar devices and modules when the image is collected and generated, As the generation time and location information of the device when collecting the current frame image.

Preferably, the generation device ip is obtained by reading the MAC information of the collection device when the image is collected and generated.

Preferably, the digital signature s is obtained based on the chain rule by using the verification code of the previous frame image and the image content of the current frame to carry out hash coding, and then encrypt the hash code. Further, specific operations can be adopted: send the HASH value of the previous image and the current collected image data into a HASH algorithm function to calculate the HASH value of this string of data; use the own private key to encrypt the HASH value, Get the encrypted HASH value as the digital signature of the image.

Preferably, the encoding step: pack the identity into a standard tag (Tag) information according to the grammatical requirements of the image encoding format, and perform image encoding as a part of the image header information.

According to a second aspect of the present invention, a method for identifying video data is provided, including:

Video ID generation step: select key frame in video sequence, generate the image identification information of key frame in described video sequence, form a video identity card (Video Identification) describing video sequence information by the image identification information of described key frame , referred to as VID);

The video ID card includes two parts of information:

Part of it is video generation information, including at least generation time t _s and end time t _e , generation location p, generation device (MAC) ip, and digital signature s;

The other part is the image ID card (I2D) information in the sequence, that is, all key frames in this sequence (frames containing image ID card (I2D) information), and the image ID card (I2D) information is listed one by one in order of appearance time The key frame is an image frame at a certain time interval, or an intra-frame coding frame I frame in the video coding standard IPPP coding structure;

Video coding step: the above two parts of information are video coded, and the coded video data includes the video ID (VID) information of the video.

Preferably, the video ID card, wherein the image ID card in sequence (I2D) information lists the frame sequence number of each key frame, the generation time in I2D and the digital signature.

Preferably, in the video encoding step, the two parts of information of the video ID card are packaged into a video encoding stream (such as a PS stream for storage or a TS stream for transmission) according to the grammatical requirements of the video encoding format. A standard tag (Tag) information in , is used as a part of the video code stream header information for video encoding.

According to a third aspect of the present invention, an image data identification system is provided, including:

Image identification generation module: this module obtains information when each image is collected, and forms the image identification information (Image Identification, referred to as I2D), and the identity identification includes at least image generation time t, generation location p, generation equipment ( MAC) ip, digital signature s;

Image encoding module: image-encodes the identity mark generated by the identity mark generation module, the encoded image data contains the identity mark information of the image, and realizes the identity mark of the image through the encoded image data.

Preferably, the image identity generation module includes:

Image time and position module: used to obtain the image generation time t and generation position p. When the image is collected and generated, the time service and positioning module with GPS or Beidou, or other similar devices and modules can be used to obtain global unified time service and positioning. Information, as the generation time and location information of the device when collecting the current frame image;

Image generation device information module: used to obtain the generation device ip, which is obtained by reading the MAC information of the collection device when the image is collected and generated;

Image digital label module: used to provide digital signature s generation function, said digital signature s is based on the chain rule, using the verification code of the previous frame image and the content of this frame image to carry out hash coding, and then encrypt the hash code to obtain .

More preferably, in the digital label module, the generation of the digital signature s can adopt specific operations: send the HASH value of the previous image and the current collected image data into a HASH algorithm function, and calculate the HASH of this string of data Value; encrypt the HASH value with your own private key to obtain the encrypted HASH value as the digital signature of the image.

Preferably, the image encoding module packs the identity into a standard tag (Tag) information according to the grammatical requirements of the image encoding format, and performs image encoding as a part of the image header information.

The system further includes an image data storage module and/or an image data module, wherein:

The image data storage module is used to provide the storage function of the image identity identification I2D information;

The image data module is used to provide image data acquisition, reading and storage functions. It is a video acquisition and control unit that provides images and other optical signals to be converted into analog electrical signals, and then converts analog signals into digital signals. Through its output interface and Digital Label module connection.

According to a fourth aspect of the present invention, an identification system for video data is provided, including:

Video ID generation module: this module will form a video ID card describing the video sequence information by the image ID information of key frames in the video sequence, and the video ID card includes two parts of information:

Part of it is video generation information, including at least the generation time t _s of the start frame and the end frame time t _e , the generation location p, the generation device (MAC) ip, and the digital signature s;

The other part is the image ID card (I2D) information in the sequence, that is, the image ID card (I2D) information of all key frames in this sequence are listed one by one according to the order of appearance; key frames are image frames at a certain time interval, or Intra-coded frame I frame in video coding standard IPPP coding structure.

Video encoding module: This module performs video encoding on the above-mentioned two parts of the video ID card information, and the encoded video data includes the video ID card (VID) information of the video.

Correspondingly, the video data identification system further includes a video data storage module and/or a video data module, wherein:

The video data storage module is used to provide the storage function of the video ID card information;

The video data module is used to provide video data acquisition, reading and storage functions, provide images for the video acquisition and control unit, convert optical signals into analog electrical signals, and then convert analog signals into digital signals for digital signatures.

Each module involved in the above-mentioned system of the present invention corresponds to the corresponding steps in the method, and the technology for its realization can also be realized by the method corresponding to the steps in the method.

The present invention is a kind of identification technology of image and video data, which is similar to a citizen's ID card used as the unique identification of each citizen, and video and image data also need an "ID card" for identification. The present invention provides an identification method and system for image and video data, and provides a standard identification information for each image and video, including information such as data generation time, collection location, collection equipment, and digital signature.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention integrates information such as the time, location, generator, and digital signature of images and videos, and uses them as the unique identity identification image ID card for images and video data, providing uniqueness, authority, security, universality, and privacy. Unique metadata, which is conducive to image encoding and other processing, channel transmission and decoding reconstruction, time-space synchronization fusion analysis, traceability and anti-tampering, etc.

Description of drawings

Fig. 1 is a step diagram of an image or video data identification method in an embodiment of the present invention;

Fig. 2 is a schematic diagram of an image or video data identification system in an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

Aiming at the fact that digital signatures are mostly generated based on image features and lack information on image acquisition time, location, and equipment, the identity identification technology for image/video data provided by the present invention, by designing a unique identity identification image for image and video data The ID card generates a unique identity for the image while it is being collected, which is used to provide information such as the time, place, generator, and digital signature of the image.

The present invention is different from an electronic signature, but by designing a unique identity mark for the image and video data as the "identity card" of the video image, the identity mark is generated for the image at the same time as the image is collected, and the time, place, and time of image generation are provided. Generator, digital signature and other meta-information, these information provide uniqueness, authority, security, universality, Privacy meta information.

Shown in Fig. 1 with reference to, a kind of image data identification method may comprise the following steps:

Image identity generation step: For each image, when it is collected and generated, the image identity (Image Identification, referred to as I2D) information is formed by reading information such as the local time position, and the image identity information includes the image generation time 4 types of information such as t, generation location p, generation device (MAC) ip, and digital signature s;

Image coding step: Pack the I2D information into a standard Tag information according to the grammatical requirements of the image coding format, and use it as a part of the image header information to perform image coding, and the coded image data includes the I2D information of the image, namely Image ID.

In some embodiments of the present invention, when the image is collected and generated, the image generation time t and the generated position p information in the I2D are obtained by reading the time and location information locally provided by the acquisition device. Specifically, when a camera captures an image, before encoding or at the same time as encoding, the encoding module reads the local time (including date) and location information of the acquisition device, and generates the time t required for I2D according to the syntax format. , location p information. The provision of local time, date, location and other information can be provided by the GPS, Beidou and other modules attached to the collection device, or the globally unified timing and location information obtained by the collection device through the network.

In some embodiments of the present invention, the generation of the digital signature s in the image ID card in the I2D is based on the chain rule, using the verification code of the previous frame image and the content of this frame image to carry out hash coding, and then the hash code Encrypt to get the signature. Better, it can be realized by the following operations: send the HASH value of the previous image and the current collected image data into a HASH algorithm function, and calculate the HASH value of this string of data; encrypt the HASH with your own private key Value, get the encrypted HASH value as the digital signature of the image.

In some embodiments of the present invention, the I2D information is packaged into a standard Tag information according to the grammatical requirements of the image encoding format, and used as a part of the image header information to perform image encoding. The encoded image data includes the I2D information of the image.

Correspondingly, a video data identification method may include the following steps:

Video ID generation step: select the key frame in the video sequence, generate the image ID information of the key frame in the video sequence, form a video ID card describing the video sequence information by the image ID information of the key frame; key frame The selection can be an image frame at a certain time interval, or an intraframe coded frame I frame similar to MPEG and H.26X series video coding standard IPPP coding structure.

Video coding step: the above two parts of information are video coded, and the coded video data includes the video ID information of the video.

Further, the video identification card (Video Identification, referred to as VID) includes two parts of information:

Part of it is video generation information, including four types of information, including generation time t _s and end time t _e , generation location p, generation device (MAC) ip, and digital signature s;

The other part is the I2D information in the sequence, that is, the I2D information of all key frames containing I2D information in this sequence is listed one by one in order of appearance time, of course, but here it is also possible to list only the frame sequence number and I2D information of each key frame. Generation time and digital signature in .

These two parts of information are packaged into a standard Tag information in a video coded stream (PS stream for storage or TS stream for transmission) according to the grammatical requirements of the video coding format, as part of the video code stream header information, Perform video encoding. The encoded video data includes the VID information of the video.

The image identification information of the key frame is obtained by referring to the above-mentioned identification method of image data.

Referring to Figure 2, an identity identification system for image data includes:

Image ID generation module: For each image, this module reads the local information when it is collected and generated, and obtains the image generation time t, generation location p, generation device (MAC) ip, digital 4 types of information such as signature s;

Image encoding module: image encoding is performed on the identity information generated by the identity identification generation module, the encoded image data contains the image identification information, and the image identification is realized through the encoded image data.

In a preferred embodiment, specifically, the image identity generation module reads from the time position module to obtain image generation time t, generation location p information; reads from the device MAC module to obtain device MAC information; reads from the digital label module Obtain digital label information; package the obtained image generation time t, generation location p, device MAC, and digital label into an image identity I2D, and send it to the image encoding module.

The image identity identification generating module includes:

Image time and location module: used to obtain image generation time information and location information, which can be obtained by reading the local time and location information of the acquisition device when image acquisition is generated; it can be provided by GPS, Beidou and other modules attached to the acquisition device, or it can be Global unified timing and location information obtained by the acquisition equipment through the network;

Image generation device information module: used to obtain the generation device information, which is obtained by reading the MAC information of the collection device when the image is collected and generated; store and provide the MAC information of the current collection device;

Image digital label module: used to provide a digital signature generation function, the digital signature is based on the chain rule, using the verification code of the previous frame image and the image content of this frame to carry out hash coding, and then encrypt the hash code to obtain.

Further, the system may also include an image data module, which is mainly used to store the currently collected raw image data and provide image content information for the digital label module.

Further, the system may also include an image data module, which is used for collecting, reading and storing image data.

In some preferred embodiments, the image digital label module generates the HASH value of the current image by reading the content of the current image data provided by the image data module and the HASH value of the previous frame image stored locally, and encrypts and generates Digital label; in addition, the HASH value of the current image is stored as the HASH value of the previous frame image for the next encryption calculation. Specific implementation: the HASH value of the previous frame image and the content of the current image are formed into a data string, and HASH encoding is performed to obtain a 256-bit HASH value; the current HASH value is encrypted with a private key, and the encrypted HASH value is used as a digital signature.

In the preferred embodiment shown in FIG. 2 , an image data identification system includes: an image encoding module, an identity generation module, an image data module, a time location module, a device MAC module, and a digital label module. in:

The image data module is connected with the digital label module to provide image content information collection, storage and reading functions;

The time and location module is connected to the identity generation module to provide time information and location information collection functions;

The device MAC module is connected to the identity generation module to provide the device MAC address information collection function;

The digital label module is connected to the identity generation module to provide a digital label generation function;

The identity generation module obtains 4 types of information such as generation time t, generation location p, generation device (MAC) ip, and digital signature s from the above-mentioned time position module, equipment MAC module, and digital label module;

The image coding module may also be a main processor, configured to pack the above information according to a syntax format to generate an image identity I2D.

Further, based on the above technology, an identification system for video data includes:

Video ID generation module: this module will form a video ID card describing the video sequence information by the image ID information of key frames in the video sequence, and the video ID card includes two parts of information:

Part of it is video generation information, including at least generation time (collection time of the start frame) information and end time (collection time of the end frame) information, generation location information, generation device information, and digital signature information;

The other part is the image ID card information in the sequence, that is, all key frames containing image ID card information in this sequence, and the image ID card information is listed one by one in order of appearance time;

Video encoding module: This module performs video encoding on the above-mentioned two parts of the video ID card information, and the encoded video data includes the video ID card information of the video.

The image identification information of key frames of the system is formed with reference to the above-mentioned identification method of image data, which will not be repeated here. The block diagram of the identity identification system for video data can be shown in Figure 2. The principles and processes of the two are basically the same, except that one is for image data and the other is for video data.

The above are some preferred designs in the present invention, of course, in other embodiments, the above-mentioned modules may also have other structures. Each of the above-mentioned preferred designs can be used alone, or can be used in any combination under the premise of not conflicting with each other, and the effect will be better when used in combination.

Specifically, in order to better understand the technical solution of the present invention, the above-mentioned method and system of the present invention will be described in detail below, especially the specific preferred technical implementation involved in the above-mentioned steps/modules.

1. By reading the local time and location information of the acquisition device.

Using the image acquisition device, each time an image is collected, the time and position module acquires the image generation time t and generation position p information in the I2D by reading the time and location information locally provided by the acquisition device when the image is collected and generated. Specifically, when a camera captures an image, before encoding or at the same time as encoding, the image encoding module reads the local time (including date) and location information of the acquisition device, and generates the time required for I2D according to the syntax format t, location p information.

The time information refers to the globally unified timing information, which includes two parts: UTC time: hhmmss.ss; month, day, and year——010100～123199. The provision of local time, date, location and other information can be provided by the GPS, Beidou and other modules attached to the collection device, or the globally unified timing and location information obtained by the collection device through the network.

Described location information refers to globally unified positioning information, including two parts: one is hemispheric information: northern and southern hemispheres (N latitude, S south latitude), east and west hemispheres (E east longitude, W west longitude); the other is longitude and latitude information: latitude Format: ddmm.mmmm——0000.00000～8959.9999, longitude format: ddmm.mmmm——00000.0000～17959.9999hhmmss.ss. The provision of local location and other information can be provided by GPS, Beidou and other modules attached to the collection device, or it can be obtained by the collection device through the network and other globally unified timing and location information.

2. By reading the MAC information of the acquisition device.

Using the image acquisition device, each time an image is collected, before encoding or at the same time as encoding, the image encoding module reads the local MAC address of the acquisition device and generates the MAC address information required by I2D according to the syntax format.

3. Generation of digital signature s in image ID card in I2D.

The generation of the digital signature s in the image ID card in the I2D is based on the chain rule, and the HASH value of the previous image and the current collected image data are sent to a HASH algorithm function to calculate the HASH of this string of data Value; encrypt the HASH value with your own private key to obtain the encrypted HASH value as the digital signature of the image.

Using the chain rule to generate a digital signature mainly has the following functions:

(1) Calculate the data of any length, including: the HASH value of the previous image, and the current collected image data to obtain a fixed-length Hash value. The generated HASH value is irreversible, that is, the original value cannot be calculated only through the HASH value. image.

(2) Any tampering of the image will lead to a completely different Hash value, and since the digital signature is an encrypted Hash value, the key must be cracked at the same time for tampering with the image, which reduces the feasibility.

(3) In addition, since the Hash value will be calculated by inputting the Hash value of the next picture as the file header, the HASH value and the next picture are used as a block, and each picture is connected to the next picture through its HASH value The images are linked, similar to the blockchain technology, the tampering of a single picture will cause all subsequent Hash values to be inconsistent, increasing the difficulty of tampering.

4. Pack the I2D information into a standard Tag information according to the grammatical requirements of the image encoding format, and perform image encoding as a part of the image header information. The generated I2D information is transmitted to the image coding module, and becomes the unique identification image ID card of the image data.

The encoded image data includes the I2D information of the image. As a preferred embodiment, the encoding can pack the I2D information into a Tag according to the following syntax format (including but not limited to the syntax format):

For video sequences, VID is generated by I2D and sent to the video encoding module.

For a video sequence, the image ID I2D of the generated key frame is used to extract the video generation time t _s and end time t _e , the generation location p, the generation device (MAC) ip, etc., and pack and generate the video identity VID. The encoded video image data includes the VID and I2D information of the video image.

As can be seen from the description of the foregoing embodiments, the present invention:

(1) The generated identity includes additional information about the time, location, and creator of the image, providing reliable information for image encoding, channel transmission, decoding and reconstruction, spatio-temporal fusion analysis, and source tracing.

(2) The generated identity includes a digital signature, which has a tamper-proof function and guarantees the authenticity of the image.

(3) Generate a video ID card for the video, which provides reliable information for video encoding, channel transmission, decoding and reconstruction, and source tracing.

To sum up, the present invention designs a unique identity identification image ID card for image and video data, and generates a unique identity identification for it at the same time as the image is collected, and the identification is used to provide the time, place, generator, digital signature, etc. These information provide unique, authoritative, secure, universal, and private meta-information for image encoding and other processing, channel transmission and decoding reconstruction, time-space synchronization fusion analysis, traceability, and tamper-proofing.

It should be noted that the steps in the image and video data identification method provided by the present invention can be implemented by using the corresponding modules, devices, units, etc. in the image and video data identification system. Personnel can refer to the technical solution of the system to implement the steps of the method, that is, the embodiments in the system can be understood as preferred examples for implementing the method, and will not be repeated here.

Those skilled in the art know that, in addition to realizing the system provided by the present invention and its various devices in a purely computer-readable program code mode, the system provided by the present invention and its various devices can be completely programmed with logic gates, logic gates, The same functions can be realized in the form of switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system provided by the present invention and its various devices can be considered as a hardware component, and the devices included in it for realizing various functions can also be regarded as the structure in the hardware component; Means for implementing various functions can be regarded as either a software module implementing a method or a structure within a hardware component.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims (14)

1. a kind of identity method of image data, which is characterized in that including：

Image identity identifies generation step：Information when obtaining each width Image Acquisition forms the identification information of the image, institute Identification information is stated including at least image generation times information, generation location information, generation facility information, digital signature letter Breath；

Image editing method：The identification information is subjected to image coding, the image data after coding contains the image Identification information obtains the image identity card of the unique identity of the image.

2. the identity method of image data according to claim 1, it is characterised in that：With following one or more Feature：

Described image generated time information generates location information, and GPS or north are carried by collecting device when Image Acquisition is generated The global time service locating module of bucket or other global time service positioning devices and module, the time service for having the whole world unified of acquisition and fixed Position information, as generated time of the equipment when acquire this frame image, generation location information；

The generation facility information passes through the MAC information acquisitions of reading collecting device when Image Acquisition generates；

The digital signature information is to be based on chain rule, is breathed out using the identifying code of previous frame image, this frame picture material Uncommon coding, then Hash codes are encrypted to obtain.

3. the identity method of image data according to claim 2, it is characterised in that：The digital signature information, Refer to：By the HASH values of a upper sub-picture and current acquisition image data, HASH algorithmic functions are sent into, this is calculated The HASH values of string data；Using the private key encryption HASH values of we, encrypted HASH values are obtained, the number label as image Name.

4. according to the identity method of claim 1-3 any one of them image datas, it is characterised in that：Described image is compiled Code step：By the identity according to the grammar request of coding format, it is packaged as the label information of a standard, as A part for picture header information carries out image coding.

5. a kind of identity method of video data, it is characterised in that：Including：

Video identity generation step：Key frame in video sequence is selected, the image of key frame in the video sequence is generated Identification information is formed the video identity of a description Video sequence information by the image identity identification information of the key frame Card；

The video identity card includes two parts information：

A part is that video generates information, includes at least and generates starting frame time information and terminate frame time information, generate place Information generates facility information, digital signature information；

Another part is that image identity demonstrate,proves information, i.e., all key frames in this sequence in sequence, and the key frame is comprising image The picture frame of ID card information, image identity card information are listed one by one by time of occurrence sequencing；

Video coding step：Above-mentioned two parts information carries out Video coding, the video data after coding contains the video Video ID card information.

6. the identity method of video data according to claim 5, it is characterised in that：The video identity card, Image identity card information lists the generated time sum number in the number of frames of each key frame, image identity card information in middle sequence Word is signed；Key frame is the picture frame of intervals or the interior volume of frame in video encoding standard IPPP coding structures Code frame I frames.

7. the identity method of video data according to claim 5, it is characterised in that：The Video coding step, By two parts information of the video identity card according to the grammar request of video code model, it is packaged as a Video coding code stream In a standard tag information carry out Video coding as a part for video code flow header.

8. a kind of identity system of image data, it is characterised in that：Including：

Image identity identifier generation module：Information when obtaining each width Image Acquisition forms the identification information of the image, institute Identification information is stated including at least image generation times information, generation location information, generation facility information, digital signature letter Breath；

Image coding module：The identity that the identity generation module is generated carries out image coding, after coding Image data contain the identification information of the image, the identity of image is realized by the image data after the coding Mark.

9. the identity system of image data according to claim 8, it is characterised in that：Described image identity is given birth to Include at module：

Image temporal position module：For obtaining image generation times information, generating location information, lead to when Image Acquisition generates It crosses collecting device and carries GPS or Big Dipper whole world time service locating module or other global time service positioning devices and module, the tool of acquisition There is the unified time service and location information in the whole world, as generated time of the equipment when acquire this frame image, generation location information；

Image forming apparatus information module：Facility information is generated for obtaining, is set when Image Acquisition is generated by reading acquisition Standby MAC information acquisitions；

Image digitization label model：For providing digital signature systematic function, the digital signature is to be based on chain rule, is utilized The identifying code of previous frame image, this frame picture material carry out Hash coding, then are encrypted to obtain to Hash codes.

10. the identity system of image data according to claim 8, it is characterised in that：The digital label module, By the HASH values of a upper sub-picture and current acquisition image data, HASH algorithmic functions are sent into, this string data is calculated HASH values；Using the private key encryption HASH values of we, encrypted HASH values, the digital signature as image are obtained.

11. the identity system of image data according to claim 8, it is characterised in that：Described image coding module, By the identity according to the grammar request of coding format, it is packaged as the label information of a standard, as image head A part for information carries out image coding.

12. according to the identity system of claim 8-11 any one of them image datas, it is characterised in that：The system Further comprise image data memory module and/or image data module, wherein：

Image data memory module, the store function for providing image identity identification information；

Image data module, acquisition, reading and store function for providing image data.

13. a kind of identity system of video data, it is characterised in that：Including：

Video identity generation module：The module forms one by by the image identity identification information of key frame in video sequence The video identity card of a description Video sequence information, the video identity card includes two parts information：

A part is that video generates information, includes at least and generates starting frame time information and terminate frame time information, generate place Information generates facility information, digital signature information；

Another part is that image identity demonstrate,proves information, i.e., all key frames in this sequence in sequence, and the key frame is comprising image The picture frame of ID card information, image identity card information are listed one by one by time of occurrence sequencing；

Video encoding module：Module video identity card two parts information described above carries out Video coding, the video after coding Data are to contain the video ID card information of the video.

14. the identity system of video data according to claim 13, it is characterised in that：The body of the video data Part mark system further comprises video data memory module and/or video data module, wherein：

Video data memory module, the store function for providing video ID card information；

Video data module, acquisition, reading and store function for providing video data are video acquisition and control unit Image is provided, converts optical signals to analog electrical signal, then analog signal is switched into digital signal, is used for digital signature.