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CN109660701A - Law-enforcing recorder and whole video-with-audio recording method based on two-dimensional code scanning identification

Publication number

CN109660701A

CN109660701A CN201710933959.4A CN201710933959A CN109660701A CN 109660701 A CN109660701 A CN 109660701A CN 201710933959 A CN201710933959 A CN 201710933959A CN 109660701 A CN109660701 A CN 109660701A

Authority

CN

China

Prior art keywords

code

dimensional code

image

video

dimensional

Prior art date

2017-10-10

Legal status (The legal status 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 status listed.)

Pending

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• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
  • H04N23/50—Constructional details
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
  • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
  • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
  • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
  • G06K7/10881—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices constructional details of hand-held scanners
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
  • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
  • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
  • G06K7/1404—Methods for optical code recognition
  • G06K7/146—Methods for optical code recognition the method including quality enhancement steps
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N5/00—Details of television systems
  • H04N5/76—Television signal recording

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Signal Processing (AREA)
• Multimedia (AREA)
• Electromagnetism (AREA)
• General Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Artificial Intelligence (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Health & Medical Sciences (AREA)
• Quality & Reliability (AREA)
• General Engineering & Computer Science (AREA)
• Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
• Television Signal Processing For Recording (AREA)

Technical field

The invention belongs to equipment technical field of enforcing the law, it is especially a kind of based on two-dimensional code scanning identification law-enforcing recorder and Whole video-with-audio recording method.

Background technique

From generation type, two dimensional code can be divided into two classes:

(1) stack two dimensional code: on the basis of one-dimensional bar code, multiple bar codes being packed together and are encoded, common Coding standard have PDF417 etc.；

In addition be exactly matrix two-dimensional barcode using QR as representative.

(2) matrix two-dimensional code: carrying out the expression of information in a space of matrices by the square of black and white, black The square of color indicates 1, and white square indicates 0, and corresponding combination illustrates a series of information, and common coding standard has QR Code,

Many applications are encoded with QR code at present, decoding, QR code not only information capacity greatly, high reliablity, it is at low cost, Fast response time can also indicate that the kinds of words such as Chinese character and image information, its security and antiforge purpose are strong and very easy to use.

What use was most wide at present is QR code, and QR code is divided into 40 versions, and version 1 is made of 21x21 square, each version Increase by 4 squares, edition 40 is made of 177x177 square.One version of every increase, the storable information content of QR code also with Increase.

Currently, in the market common law-enforcing recorder can only realize take pictures, image, recording, intercommunication, wireless network transmissions etc. Function, the photo of shooting, the resources such as audio-video document, recording file can be centrally stored into acquisition workstation, or storage In the storage equipment unified to one, if needing to call the photo of law-enforcing recorder using unit, audio-video document, recording text Part, can be by calling on acquisition workstation, or the audio-video being uniformly stored in storage equipment is called by WEB mode File.In actual use, the video of law-enforcing recorder can pass through playback picture, sound view directly in law-enforcing recorder Frequency file, recording file mode traveled in the media such as unauthorized internet, wechat, microblogging by random leakage, and let out The resource of dew can not carry out retrospect source by effective means；Photo, audio-video document, the recording file of law-enforcing recorder, one Denier is focused on acquisition workstation or is saved in storage setting, can arbitrarily be handled, copy shearing；Individually operated law enforcement When recorder, video can be leaked by reproduction and can not trace.Law-enforcing recorder in use, since storage card can With hot plug, there is also the hidden danger for being arbitrarily deleted, being modified for the video file being stored in storage card.

Summary of the invention

The problem to be solved in the present invention is to provide a kind of in the replayed section of audio-video document, with audio-video document Unique identification by unique identification information retrospect is held from which after the audio-video document is by reproduction or leakage Method recorder or the law-enforcing recorder based on two-dimensional code scanning identification of operator's leakage.

In order to solve the above technical problems, the scheme that the present invention uses is: should be based on the law enforcement record that two-dimensional code scanning identifies Instrument includes filming apparatus, includes two dimensional code recognition unit, the character string information that image in 2 D code is included for identification；

Two-dimentional code labeling display unit is used for after two-dimensional code scanning identifies successfully, in the view of the display screen of the filming apparatus In frequency preview and recording process, the display screen display identification is successfully marked or is marked successfully by auditory tone cues；

Video recording audio-video document processing unit is associated with for character string information to be carried out uniqueness with video recording audio-video document.

In the above-mentioned technical solutions, since with two dimensional code recognition unit, which can recognize that two dimensional code is wrapped The character string information contained, the character string information that each two dimensional code includes have uniqueness, particularity, specified property, image in 2 D code packet The information contained has user of service, passes through the letter that this image in 2 D code is included in other words using time and law enforcement record event Breath, can trace back to these information；I.e. two dimensional code can form unique correspondence with law-enforcing recorder, in this way, recycling two dimension Code labeling display unit, for when two-dimensional code scanning identifies successfully after, the filming apparatus display screen video preview with In recording process, the display screen display identification is successfully marked or is marked successfully by auditory tone cues；, and pass through video recording Character string information is carried out uniqueness with video recording audio-video document and is associated with by audio-video document processing unit, in the audio-video document quilt Reproduction by unique identification information retrospect is revealed from which law-enforcing recorder or operator after perhaps revealing.

Compared with prior art, since the two dimensional code character string information that includes that each Terminal Type generates has uniqueness, special Property, specified property can be from which law enforcement by character string information retrospect after the audio-video document is by reproduction or leakage Recorder or operator's leakage, therefore have extensive actual demand in the application industry using law enforcement record.

Preferably, the two dimensional code recognition unit has pretreatment subelement and decoding subunit；Wherein, the pretreatment Subelement is used for image zooming-out, and the image in 2 D code that will acquire carries out gray processing processing, reduces data volume；Decoding subunit is used for The extraction of two dimensional code code word, error-correcting decoding and information decoding.

The invention solves another problem be to provide it is a kind of based on two-dimensional code scanning identification whole video-with-audio recording Method.

In order to solve the above technical problems, the whole video-with-audio recording method that should be identified based on two-dimensional code scanning includes following step It is rapid:

(1) image in 2 D code is generated；

(2) identify that the image in 2 D code in the step (1) is being shot after identifying the character string information that two dimensional code includes In the video preview and recording process of the display screen of device, the display screen display identification successfully marks or passes through sound Cue mark success；

(3) character string information uniqueness is carried out with video recording audio-video document to be associated with；

It (4), can two-dimensional code display includes in playback interfaces word when law-enforcing recorder carries out video recording audio-video document playback Symbol string information.

Preferably, the two dimensional code in the step (1) is QRcode two dimensional code.

Preferably, in the step (2), the identification of image in 2 D code includes pretreatment and decoding step；It is wherein described Pre-treatment step method particularly includes:

Step 1: the image in 2 D code that image capture device is obtained carries out gray processing processing, data volume is reduced, it is empty to reduce storage Between and image processing time；

The noise spot introduced when step 2: removing acquisition two-dimensional barcode image using median filtering, reduces noise to subsequent image The interference of processing；

Step 3: bar code identification only needs to obtain depth module information in bar code image, so needing after the filtering pair Image carries out binaryzation, is carried out according to the algorithm that balanced and Otsu global threshold combines to two-dimensional barcode image using adaptive optical Binaryzation removes the influence of bar code image uneven illumination；

Step 4: realizing two-dimensional bar code positioning, the tilt angle and four control vertexs of bar code are obtained, by two-dimensional bar code location Domain is cut into from entire image, is prepared for the rotation and geometric distortion correction of subsequent bar code, and subsequent image processing is reduced Range accelerates image processing speed；

Step 5: image rotation is horizontality by the bar code tilt angle obtained according to the 4th step；

Step 6: realizing the geometry distrotion correction of two-dimensional bar code, the more regular bar code image of a width is obtained；

Step 7: QRcode two dimensional code establishes sampling grid according to the location information of position sensing figure and correction graph, it is The code word extraction of QRcode two dimensional code is ready；

Step 8: the extraction of QRcode two dimensional code code word is sampled to sampling grid crosspoint, dark color is denoted as 0, light color note It is 1, the codeword sequence of QRcode two dimensional code can be obtained；

The decoding step includes the extraction of two dimensional code code word, error-correcting decoding and information decoding.

The present invention also provides a kind of law enforcements based on two-dimensional code scanning identification to record system, includes background application business system System and law-enforcing recorder, the background application operation system has exterior terminal by wireless network connection, in the exterior terminal Upper generation two dimensional code；The law-enforcing recorder includes filming apparatus, further includes having two dimensional code recognition unit, two-dimentional code labeling aobvious Show unit and video recording audio-video document processing unit；

The two dimensional code recognition unit, the character string information that image in 2 D code is included for identification；

The two dimension code labeling display unit, is used for after two-dimensional code scanning identifies successfully, in the display screen of the filming apparatus Video preview and recording process in, display screen display identification successfully label or is marked as by auditory tone cues Function；

The video recording audio-video document processing unit, for character string information and video recording audio-video document to be carried out uniqueness pass Connection.

Preferably, the two dimensional code recognition unit has pretreatment subelement and decoding subunit；Wherein, the pretreatment Subelement is used for image zooming-out, and the image in 2 D code that will acquire carries out gray processing processing, reduces data volume；Decoding subunit is used for The extraction of two dimensional code code word, error-correcting decoding and information decoding.

Detailed description of the invention

It is further described with reference to the accompanying drawing with embodiments of the present invention:

Fig. 1 is that the present invention is based on the easy structure schematic diagrames of the law-enforcing recorder of two-dimensional code scanning identification；

Fig. 2 is the easy structure schematic diagram of the law enforcement record system based on two-dimensional code scanning identification；

Wherein: 1- law-enforcing recorder；2- filming apparatus；3- two dimensional code recognition unit；301- pre-processes subelement；302- solves numeral Unit；4- two dimension code labeling display unit；5- video recording audio-video document processing unit；6- background application operation system；Outside 7- Terminal.

Specific embodiment

As shown in Figure 1, the law-enforcing recorder 1 of the invention based on two-dimensional code scanning identification, includes filming apparatus 2, benefit It can be used for scanning the two-dimensional code image with the camera on filming apparatus 2, further include having two dimensional code recognition unit 3, for identification two The character string information that dimension code image is included, the information that image in 2 D code includes are had user of service, are recorded using time and law enforcement Event passes through the information that this image in 2 D code is included in other words, can trace back to these information；

Two-dimentional code labeling display unit 4, for showing the character string information after the two dimensional code recognition unit 3 identification described In audio-video preview interface captured by filming apparatus 2；

Video recording audio-video document processing unit 5 is associated with for character string information to be carried out uniqueness with video recording audio-video document.

In addition, two dimensional code recognition unit 3 has pretreatment subelement 301 and decoding subunit 302；Wherein, the pre- place It manages subelement 301 and is used for image zooming-out, the image in 2 D code that will acquire carries out gray processing processing, reduces data volume；Solve numeral list Member 302 is for the extraction of two dimensional code code word, error-correcting decoding and information decoding.

It is above-mentioned based on two-dimensional code scanning identification law-enforcing recorder 1 belong to the present invention is based on two-dimensional code scanning identification law enforcement A part of record system, as shown in Fig. 2, be it is of the invention based on two-dimensional code scanning identification law enforcement record system, include Background application operation system 6 and law-enforcing recorder 1, the background application operation system 6 have external whole by wireless network connection End 7.

In the present embodiment, exterior terminal 7 can be smart phone, PC, tablet computer etc., the base in the present embodiment It in the law-enforcing recorder 1 of two-dimensional code scanning identification, is transformed by the bottom master chip to law-enforcing recorder, exploitation increases again Add its function, realizing can be swept using the two-dimension code image that the pick-up lens of law enforcement record generates existing each Terminal Type It retouches, and identifies the character string information that two dimensional code is included.

Specific application method is: logging in law enforcement record system, input law enfrocement official, law enforcement record by exterior terminal 7 Instrument device numbering, the information such as law enforcement time started, so that exterior terminal 7 generates an image in 2 D code, image in 2 D code includes User of service uses time and law enforcement record event；

Specifically based on two-dimensional code scanning identification law enforcement recording method the following steps are included:

(1) image in 2 D code is generated；

(2) identify that the image in 2 D code in the step (1) is being shot after identifying the character string information that two dimensional code includes In the video preview and recording process of the display screen of device, the display screen display identification successfully marks or passes through sound Cue mark success

(3) character string information uniqueness is carried out with video recording audio-video document to be associated with；

It (4), can two-dimensional code display includes in playback interfaces word when law-enforcing recorder carries out video recording audio-video document playback Symbol string information.

Two dimensional code in the step (1) is QRcode two dimensional code.

In the step (2), the identification of image in 2 D code includes pretreatment and decoding step；The wherein pretreatment step Rapid method particularly includes:

Step 1: the image in 2 D code that image capture device is obtained carries out gray processing processing, data volume is reduced, it is empty to reduce storage Between and image processing time；

The noise spot introduced when step 2: removing acquisition two-dimensional barcode image using median filtering, reduces noise to subsequent image The interference of processing；

Step 3: bar code identification only needs to obtain depth module information in bar code image, so needing after the filtering pair Image carries out binaryzation, is carried out according to the algorithm that balanced and Otsu global threshold combines to two-dimensional barcode image using adaptive optical Binaryzation removes the influence of bar code image uneven illumination；

Step 4: realizing two-dimensional bar code positioning, the tilt angle and four control vertexs of bar code are obtained, by two-dimensional bar code location Domain is cut into from entire image, is prepared for the rotation and geometric distortion correction of subsequent bar code, and subsequent image processing is reduced Range accelerates image processing speed；

Step 5: image rotation is horizontality by the bar code tilt angle obtained according to the 4th step；

Step 6: realizing the geometry distrotion correction of two-dimensional bar code, the more regular bar code image of a width is obtained；

Step 7: QRcode two dimensional code establishes sampling grid according to the location information of position sensing figure and correction graph, it is The code word extraction of QRcode two dimensional code is ready；

Step 8: the extraction of QRcode two dimensional code code word is sampled to sampling grid crosspoint, dark color is denoted as 0, light color note It is 1, the codeword sequence of QRcode two dimensional code can be obtained；

The decoding step includes the extraction of two dimensional code code word, error-correcting decoding and information decoding.

After identifying the character string information that two dimensional code includes, it is shown in the audio-video preview interface of law-enforcing recorder, After law-enforcing recorder starts video recording, character string information can be subjected to uniqueness with video recording audio-video document and be associated with.It is holding simultaneously It, can two-dimensional code display includes on video playback interface character string information when method recorder carries out audio-video document playback.By There are uniqueness, particularity, specified property in the character string information that the two dimensional code that each Terminal Type generates includes, therefore in audio-video document Replayed section in, can the unique identification of audio-video document the most can pass through after the audio-video document is by reproduction or leakage Character string information retrospect is revealed from which law-enforcing recorder.

Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention；It is all Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention Within the scope of shield.

1. a kind of law-enforcing recorder based on two-dimensional code scanning identification, includes filming apparatus, which is characterized in that further include having two Tie up code recognition unit, the character string information that image in 2 D code is included for identification；

Two-dimentional code labeling display unit is used for after two-dimensional code scanning identifies successfully, in the view of the display screen of the filming apparatus In frequency preview and recording process, the display screen display identification is successfully marked or is marked successfully by auditory tone cues；

Video recording audio-video document processing unit is associated with for character string information to be carried out uniqueness with video recording audio-video document.

2. the law-enforcing recorder according to claim 1 based on two-dimensional code scanning identification, which is characterized in that the two dimensional code Recognition unit has pretreatment subelement and decoding subunit；Wherein, the pretreatment subelement is used for image zooming-out, will acquire Image in 2 D code carry out gray processing processing, reduce data volume；Decoding subunit for two dimensional code code word extract, error-correcting decoding and Information decoding.

3. a kind of whole video-with-audio recording method based on two-dimensional code scanning identification, which comprises the following steps:

(1) image in 2 D code is generated；

(2) identify that the image in 2 D code in the step (1) is being shot after identifying the character string information that two dimensional code includes In the video preview and recording process of the display screen of device, the display screen display identification successfully marks or passes through sound Cue mark success；

(3) character string information uniqueness is carried out with video recording audio-video document to be associated with；

It (4), can two-dimensional code display includes in playback interfaces word when law-enforcing recorder carries out video recording audio-video document playback Symbol string information.

4. the whole video-with-audio recording method according to claim 3 based on two-dimensional code scanning identification, which is characterized in that institute Stating the two dimensional code in step (1) is QRcode two dimensional code.

5. the whole video-with-audio recording method according to claim 4 based on two-dimensional code scanning identification, which is characterized in that In the step (2), the identification of image in 2 D code includes pretreatment and decoding step；The wherein specific side of the pre-treatment step Method are as follows:

Step 1: the image in 2 D code that image capture device is obtained carries out gray processing processing, data volume is reduced, it is empty to reduce storage Between and image processing time；

The noise spot introduced when step 2: removing acquisition two-dimensional barcode image using median filtering, reduces noise to subsequent image The interference of processing；

Step 3: bar code identification only needs to obtain depth module information in bar code image, so needing after the filtering pair Image carries out binaryzation, is carried out according to the algorithm that balanced and Otsu global threshold combines to two-dimensional barcode image using adaptive optical Binaryzation removes the influence of bar code image uneven illumination；

Step 4: realizing two-dimensional bar code positioning, the tilt angle and four control vertexs of bar code are obtained, by two-dimensional bar code location Domain is cut into from entire image, is prepared for the rotation and geometric distortion correction of subsequent bar code, and subsequent image processing is reduced Range accelerates image processing speed；

Step 5: image rotation is horizontality by the bar code tilt angle obtained according to the 4th step；

Step 6: realizing the geometry distrotion correction of two-dimensional bar code, the more regular bar code image of a width is obtained；

Step 7: QRcode two dimensional code establishes sampling grid according to the location information of position sensing figure and correction graph, it is The code word extraction of QRcode two dimensional code is ready；

Step 8: the extraction of QRcode two dimensional code code word is sampled to sampling grid crosspoint, dark color is denoted as 0, light color note It is 1, the codeword sequence of QRcode two dimensional code can be obtained；

The decoding step includes the extraction of two dimensional code code word, error-correcting decoding and information decoding.

• 2017
  • 2017-10-10 CN CN201710933959.4A patent/CN109660701A/en active Pending
• 2018
  • 2018-09-30 WO PCT/CN2018/108969 patent/WO2019072127A1/en active Application Filing

Application publication date: 20190419

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