CN103037144A - Encrypted digital video equipment - Google Patents
Encrypted digital video equipment Download PDFInfo
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- CN103037144A CN103037144A CN 201110303398 CN201110303398A CN103037144A CN 103037144 A CN103037144 A CN 103037144A CN 201110303398 CN201110303398 CN 201110303398 CN 201110303398 A CN201110303398 A CN 201110303398A CN 103037144 A CN103037144 A CN 103037144A
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- video
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- tampering
- encryption
- video equipment
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Abstract
The invention discloses anti-tampering digital video equipment based on digital watermark technology. The anti-tampering digital video equipment comprise a system master computer, a high-definition digital gathering card, a high-definition digital camera, and digital encryption and tampering frame detecting software of the digital encryption. The encryption digital video equipment have the function of tampering resistance of a video, guarantee integrity and realness of gathered video data, and can carry out rapid video tampering detection and location algorithms for tampered videos.
Description
Affiliated technical field
The present invention relates to a kind of enciphered digital video recording equipment, video is encrypted processing, and detect the frame figure that distorts.
Background technology
At present, people can utilize digital device making, processing and the digital information products such as storage video, image easily.These digital products were very likely just copied, shear or the change of malice by illegal in the extremely short time.People's general logarithm word video carries out password encryption, the encryptions such as digital signature.The method that satisfies the level of encryption of whole system by the length that strengthens gradually key becomes more and more unreliable.For the integrality of works, in the former cryptography, generally be to realize by the mode of signing, do not need to use the knowledge of spatial domain and frequency domain.But shortcoming is, when original artwork is used again or when some content changing, can not distinguishes true and false.Encryption method as last only is used in the channel the inside of communication, in case decrypted information just fully expressly.
Summary of the invention
For above problem; the purpose of this invention is to provide a kind of Embedded Application to the special number digital watermark; realize digital video recorder; finish in the process of real-time recording, to finish and prevent the introducing of watermark in continuous video sequence of distorting; and so that the associate feature on this special digital watermark generation time; finish the continuity of video sequence and the picture material completeness check of video sequence, thereby acquisition is to the protective capability of video.
For achieving the above object, the present invention by the following technical solutions: during digital video recorder, carry out embedding algorithm based on original video in the redundancy in wavelet transform territory, improve the robustness that the anti-various videos of watermark are attacked by redundant embedding.In order to increase the fail safe of watermark, reach the effect of encryption, watermark information is carried out the scramble preliminary treatment.At first be that low frequency coefficient to original image one-level wavelet transform partly carries out scramble; Then be check code rcode to be carried out LSB implant front scramble.Choose original video and carry out as a reference watermark detection and extraction, after finding all watermarks that satisfy condition to embed the zone, by comparing, in containing the video of watermark, look for corresponding embedded location, result behind the related operation and predefined value are compared, thereby make the testing result that draws more accurate.
The invention has the beneficial effects as follows that the anti-tamper digital hard disc video recorder based on digital watermark technology has the anti-tamper function of video, has guaranteed integrality and the authenticity of the video data that gathers.This invention can detect any operation that single-frame images pixel value in the video sequence is changed or to the destruction of single-frame images integrality in the video sequence.Anti-tamper DVR is as the evidence taking equipment of police and judicial department, desirable video, the audio collection effect of high definition, high-fidelity not only can be provided, and in gathering video, automatically add fragile digital watermark, for the authenticity of video and the examination work after the generation of distorting provide strong technical guarantee.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples
Fig. 1 is the digital video encryption surface chart
Fig. 2 is that digital video frame detects the interface
Embodiment
Fig. 1 is encrypted video to process the interface, and this interface comprises video display window, preference pattern module, selects video button, encrypts button, stop button, exit button.There are two functions at the encryption interface, and one is the Real-time Collection video, directly is encrypted, and the another one function is to being encrypted processing with the video that gathers.When gathering with encryption to real-time video, in mode module, select first " opening video camera ", then click " preference pattern ", click " encryption " button, will eject a dialog box of selecting to preserve the encrypted video path, selecting paths, point determine, just can recorded video and add watermark processing.To the video of selecting to have recorded, be encrypted when processing, in mode module, select first " opening video file ", then click " preference pattern ", click " encryption " button, will eject a dialog box of selecting to preserve the encrypted video path, select to determine, carry out video-encryption is processed.
Fig. 2 is that the frame of distorting of video detects the interface, and this interface comprises the checking window, distorts the frame display window, opens button, frame checking button, stop, withdrawing from.Distorting in the checking interface, click open button, eject the dialog box of selecting the checking video, select video, click " frame checking " button and verify, in distorting the frame display window, the frame of tamper-indicating, and be kept in the path file of selection, in order to inquire about.If the frame of distorting is arranged, will at the frame of distorting tamper-indicating in the frame display window, if do not distort frame, just can not show.
Claims (3)
1. enciphered digital video recording equipment, apparatus comprises camera and the HD Audio setting of high definition.
2. according to right 1 described device, it is characterized in that: based on the video-encryption interface, adopt the camera of high definition, real-time video is encrypted processing, and preserve encrypted video.
3. according to right 1 described device, it is characterized in that, carry out frame checking detection based on the frame checking interface of distorting of video, locate suspicious frame, and suspicious two field picture is preserved automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110303398 CN103037144A (en) | 2011-10-10 | 2011-10-10 | Encrypted digital video equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110303398 CN103037144A (en) | 2011-10-10 | 2011-10-10 | Encrypted digital video equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103037144A true CN103037144A (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110303398 Pending CN103037144A (en) | 2011-10-10 | 2011-10-10 | Encrypted digital video equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780860A (en) * | 2014-01-28 | 2014-05-07 | 福建伊时代信息科技股份有限公司 | Screen recording method, device and system |
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- 2011-10-10 CN CN 201110303398 patent/CN103037144A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780860A (en) * | 2014-01-28 | 2014-05-07 | 福建伊时代信息科技股份有限公司 | Screen recording method, device and system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130410 |