CN105119893A - Video encryption transmission method based on H.264 intra-frame coding mode - Google Patents
Video encryption transmission method based on H.264 intra-frame coding mode Download PDFInfo
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- CN105119893A CN105119893A CN201510418461.5A CN201510418461A CN105119893A CN 105119893 A CN105119893 A CN 105119893A CN 201510418461 A CN201510418461 A CN 201510418461A CN 105119893 A CN105119893 A CN 105119893A
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- rns
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- nal unit
- rtp
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention relates to an image processing method, especially relates to a video encryption transmission method based on an H.264 intra-frame coding mode, and belongs to the technical field of communication. The method comprises the following steps: performing RNS coding on an original video frame image by an RNS (residue number system) coding module to obtain RNS coding data, encapsulating, by an NAL encapsulation module, the data after the RNS coding into an NAL unit, and encapsulating, by an RTP encapsulation module, the NAL unit into an RTP packet. Video image data encryption transmission is achieved through the method.
Description
Technical field
The present invention relates to a kind of method of video image processing, particularly a kind of video-encryption transmission method of H.264 intra-frame encoding mode, belongs to communication technical field.
Background technology
Irregular or the low-down situation of quantization parameter for picture material, H.264 a kind of intra-frame encoding mode I_PCM is provided, in this mode, the pixel value of the direct transmitting image of encoder, and without prediction, conversion and entropy code, accurately can express pixel value, and higher for these two kinds of special circumstances I_PCM code efficiencies.In particular cases video data is encrypted to the demand of transmission for some, the present invention proposes a kind of method of video image processing, can realize the encryption to video image when not changing pixel precision.
Summary of the invention
The object of the invention is: provide a kind of method of video image processing, more particularly a kind of video-encryption transmitting video image processing method based on H.264 intra-frame encoding mode, can realize the encrypted transmission of video image effectively.
For realizing the object of the present invention, be achieved by the following technical solutions:
A kind of image processing method, comprises the following steps:
The first step: RNS (remainder number system) coding module carries out RNS coding to original video two field picture, obtains RNS coded data;
Second step: the data encapsulation after RNS coding is become NAL unit by NAL package module;
3rd step: this NAL unit is packaged into RTP bag by RTP package module;
4th step: RTP bag is carried out Internet Transmission based on Real-time Transport Protocol by transport module;
5th step: receiver module receives RTP bag;
6th step: RTP parsing module resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
7th step: NAL parsing module, resolves NAL unit, obtains RNS coded data;
8th step: this RNS coded data of RNS decoding module decodes obtains the video frame images reduced.
A kind of image processing system, comprises with lower module:
RNS (remainder number system) coding module, carries out RNS coding to original video two field picture, obtains RNS coded data;
NAL package module, the data encapsulation after being encoded by RNS becomes NAL unit;
RTP package module, is packaged into RTP bag by this NAL unit;
Transport module, carries out Internet Transmission by RTP bag based on Real-time Transport Protocol;
Receiver module, receives RTP bag;
RTP parsing module, resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
NAL parsing module, resolves NAL unit, obtains RNS coded data;
RNS decoder module, this RNS coded data of decoding obtains the video frame images reduced.
A kind of image processing method, comprises the following steps:
The first step: RNS (remainder number system) coding module carries out RNS coding to original video two field picture, obtains RNS coded data;
Second step: the data encapsulation after RNS coding is become NAL unit by NAL package module;
3rd step: this NAL unit is packaged into RTP bag by RTP package module.
A kind of image processing method, comprises the following steps:
The first step: RTP parsing module resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
Second step: NAL parsing module, resolves NAL unit, obtains RNS coded data;
3rd step: this RNS coded data of RNS decoding module decodes obtains the video frame images reduced.
A kind of video image processing system, comprises with lower module:
RNS (remainder number system) coding module, carries out RNS coding to original video two field picture, obtains RNS coded data;
NAL package module, the data encapsulation after being encoded by RNS becomes NAL unit;
RTP package module, is packaged into RTP bag by this NAL unit;
A kind of image processing system, comprises with lower module:
RTP parsing module, resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
NAL parsing module, resolves NAL unit, obtains RNS coded data;
RNS decoder module, this RNS coded data of decoding obtains the video frame images reduced.
Accompanying drawing explanation
Fig. 1 is the entire block diagram of image processing method of the present invention;
Fig. 2 is transmitting terminal image procossing schematic diagram;
Fig. 3 is receiving terminal image procossing schematic diagram.
Embodiment
In order to realize the encrypted transmission of video image, RNS coding module is introduced for video image Pixel Information, select (2n-1) 2n (2n+1) module, the binary numeral characterizing pixel is converted to the RNS numerical value of remainder number system (RNS), transmitting through H.264 agreement again, realizing the encryption to video image when not changing pixel precision.After resolving H.264 procotol, obtain the RNS data characterizing pixel value at receiving terminal, then by RNS decoder module, RNS data are converted to binary pixel value, thus obtain original video frame image information.
As Figure 1-3, the present invention includes following steps:
The first step: RNS (remainder number system) coding module carries out RNS coding to original video two field picture, obtains RNS coded data.Concrete is: select (2n-1) 2n (2n+1) module, binary pixel values is converted to the RNS numerical value of remainder number system (RNS), in this system, the binary numeral X of represent pixel value is meeting X ∈ [0, (2n-1) * 2n* (2n+1)) condition under, n gets the minimum value satisfied condition.
Data encapsulation after RNS coding is become NAL unit (being called for short NALUnit, NALU or NAL unit: network abstraction layer unit) by second step: NAL (network abstract layer NAL:NetworkAbstractionLayer) package module.
This NAL unit is packaged into RTP bag by the 3rd step: RTP (RTP) package module.
4th step: RTP bag is carried out Internet Transmission based on Real-time Transport Protocol by transport module.
5th step: receiver module receives RTP bag.
6th step: RTP parsing module resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit.
7th step: NAL parsing module, resolves NAL unit, obtains RNS coded data.
8th step: this RNS coded data of RNS decoding module decodes obtains the video frame images reduced.
By above method, view data processes before being transmitted, achieves data encryption technology losslessly.
Claims (6)
1. an image processing method, comprises the following steps:
The first step: RNS (remainder number system) coding module carries out RNS coding to original video two field picture, obtains RNS coded data;
Second step: the data encapsulation after RNS coding is become NAL unit by NAL package module;
3rd step: this NAL unit is packaged into RTP bag by RTP package module;
4th step: RTP bag is carried out Internet Transmission based on Real-time Transport Protocol by transport module;
5th step: receiver module receives RTP bag;
6th step: RTP parsing module resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
7th step: NAL parsing module, resolves NAL unit, obtains RNS coded data;
8th step: this RNS coded data of RNS decoding module decodes obtains the video frame images reduced.
2. an image processing system, comprises with lower module:
RNS (remainder number system) coding module, carries out RNS coding to original video two field picture, obtains RNS coded data;
NAL package module, the data encapsulation after being encoded by RNS becomes NAL unit;
RTP package module, is packaged into RTP bag by this NAL unit;
Transport module, carries out Internet Transmission by RTP bag based on Real-time Transport Protocol;
Receiver module, receives RTP bag;
RTP parsing module, resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
NAL parsing module, resolves NAL unit, obtains RNS coded data;
RNS decoder module, this RNS coded data of decoding obtains the video frame images reduced.
3. an image processing method, comprises the following steps:
The first step: RNS (remainder number system) coding module carries out RNS coding to original video two field picture, obtains RNS coded data;
Second step: the data encapsulation after RNS coding is become NAL unit by NAL package module;
3rd step: this NAL unit is packaged into RTP bag by RTP package module.
4. an image processing method, comprises the following steps:
The first step: RTP parsing module resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
Second step: NAL parsing module, resolves NAL unit, obtains RNS coded data;
3rd step: this RNS coded data of RNS decoding module decodes obtains the video frame images reduced.
5. an image processing system, comprises with lower module:
RNS (remainder number system) coding module, carries out RNS coding to original video two field picture, obtains RNS coded data;
NAL package module, the data encapsulation after being encoded by RNS becomes NAL unit;
RTP package module, is packaged into RTP bag by this NAL unit.
6. an image processing system, comprises with lower module:
RTP parsing module, resolves RTP bag according to Real-time Transport Protocol, resolves to NAL unit;
NAL parsing module, resolves NAL unit, obtains RNS coded data;
RNS decoder module, this RNS coded data of decoding obtains the video frame images reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510418461.5A CN105119893A (en) | 2015-07-16 | 2015-07-16 | Video encryption transmission method based on H.264 intra-frame coding mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510418461.5A CN105119893A (en) | 2015-07-16 | 2015-07-16 | Video encryption transmission method based on H.264 intra-frame coding mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600616A (en) * | 2018-11-27 | 2019-04-09 | 西安汇明科技发展有限责任公司 | A kind of code stream packaging method based on H.264 video compression standard |
Citations (3)
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|---|---|---|---|---|
| CN1035372A (en) * | 1987-10-12 | 1989-09-06 | 索尼公司 | In residue system, be used to encode and the method and apparatus of decoding data |
| US20100189182A1 (en) * | 2009-01-28 | 2010-07-29 | Nokia Corporation | Method and apparatus for video coding and decoding |
| CN103414957A (en) * | 2013-07-30 | 2013-11-27 | 广东工业大学 | Method and device for synchronization of audio data and video data |
-
2015
- 2015-07-16 CN CN201510418461.5A patent/CN105119893A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035372A (en) * | 1987-10-12 | 1989-09-06 | 索尼公司 | In residue system, be used to encode and the method and apparatus of decoding data |
| US20100189182A1 (en) * | 2009-01-28 | 2010-07-29 | Nokia Corporation | Method and apparatus for video coding and decoding |
| CN103414957A (en) * | 2013-07-30 | 2013-11-27 | 广东工业大学 | Method and device for synchronization of audio data and video data |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600616A (en) * | 2018-11-27 | 2019-04-09 | 西安汇明科技发展有限责任公司 | A kind of code stream packaging method based on H.264 video compression standard |
| CN109600616B (en) * | 2018-11-27 | 2022-11-04 | 西安汇明科技发展有限责任公司 | Code stream packaging method based on H.264 video compression standard |
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Application publication date: 20151202 |
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