CN111861330A - Contraband identification and security inspection method and express delivery cabinet device - Google Patents
Contraband identification and security inspection method and express delivery cabinet device Download PDFInfo
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- CN111861330A CN111861330A CN202010710208.8A CN202010710208A CN111861330A CN 111861330 A CN111861330 A CN 111861330A CN 202010710208 A CN202010710208 A CN 202010710208A CN 111861330 A CN111861330 A CN 111861330A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/083—Shipping
- G06Q10/0832—Special goods or special handling procedures, e.g. handling of hazardous or fragile goods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/08—Payment architectures
- G06Q20/20—Point-of-sale [POS] network systems
- G06Q20/208—Input by product or record sensing, e.g. weighing or scanner processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/46—Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]; Salient regional features
- G06V10/478—Contour-based spectral representations or scale-space representations, e.g. by Fourier analysis, wavelet analysis or curvature scale-space [CSS]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/10—Terrestrial scenes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/172—Classification, e.g. identification
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/10—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property
- G07F17/12—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for means for safe-keeping of property, left temporarily, e.g. by fastening the property comprising lockable containers, e.g. for accepting clothes to be cleaned
Abstract
The invention discloses a contraband identification and security inspection method and an express delivery cabinet device. The express delivery cabinet device comprises a network point end and a seat end; the network node end is provided with a network node service terminal and a comprehensive cabinet; the seat end comprises a service PC and a video host connected with the service PC, and the service PC comprises an upper computer control module. The upper computer control module is connected with the protocol conversion board through a virtual port mapped by the USB server, and is used for carrying out operations of volume measurement, weighing, switch cabinet door and metal detection result acquisition. The method comprises three steps: comparing the testimony and verifying the identity of the sender; inspecting packages, and detecting whether forbidden articles such as knives and guns exist or not; and (4) storing the packages, and detecting whether the packages contain contraband articles such as metal products and drugs by using a metal detector and an X-ray detector. The invention can be applied to the occasions of parcel deposit and express receiving and dispatching, improves the safety level of express cabinet deposit and ensures the safety of the express circulation field.
Description
Technical Field
The invention belongs to the field of express delivery, and particularly relates to a method for identifying and security-checking contraband and an express delivery cabinet device.
Background
In the context of this application, contraband is defined as any item that the general public should not possess and that may be used to cause injury or expose a person to a dangerous situation. Contraband includes drugs, knives, canes, firearms or other weapons including metal or magnetic portions. At present, in the express delivery industry, whether contraband exists is identified through manual work when articles to be detected are sent, whether contraband exists is judged through experience by an express delivery receiving and dispatching person, then unpacking and checking are carried out, not only the efficiency is low, but also the experience requirement of the express delivery receiving and dispatching person is high.
The patent application number is CN 110689098A's a contraband management equipment and management method, including treater, accumulator, embedded bar code scanner, embedded ID card reader, embedded printer, embedded camera, through bar code scanner, embedded printer discernment contraband information, improve contraband's registration speed to bring contraband's management mode into the management scope, be convenient for statistics and management contraband information. But it does not realize the identification of contraband when express delivery is deposited.
The patent application publication No. CN106959305A discloses a contraband detector and a contraband detection method, which comprises a signal generator, a loop line, an antenna, a detector, a filter, an amplifier, an analog-to-digital conversion circuit and a processor. The contraband detector adopts an electromagnetic signal with a characteristic value in an echo signal of the interaction of the millimeter waves and the object to be detected, and judges whether the object is a suspicious object. But the device can not be directly applied to the field of express delivery article detection, and particularly, the article detection when unmanned express delivery is deposited. When unmanned parcel deposit is carried out in places such as airports, railway stations and the like, the safety of articles in parcels cannot be ensured.
The intelligent express delivery cabinet is widely applied and deployed in post offices and communities. A flow is posted to article of full nest express delivery cabinet of commonly used as follows:
step 1: scanning WeChat two-dimensional codes or searching for and paying attention to the 'feng nest intelligent cabinet'.
Step 2: and selecting 'sending express', filling sending information and finishing the ordering of the public number.
Step 3: the packed article goes to the feng nest and enters a mail page.
Step 4: scan the two-dimensional code/enter the mail code and click the ok key.
Step 5: and (5) face recognition is carried out, and real-name authentication is completed.
Step 6: and selecting a sending element grid, and scanning the code to pay the freight fee.
Step 7: after payment is completed, the cabinet door is opened; put in the article, close the cabinet door.
Step 8: the screen displays that the delivery is successful, and the WeChat receives the delivery notice.
The step of providing express inspection and the step of checking contraband are not provided in the sending flow. If the client sends out and has forbidden articles such as gun, cutter among the article, directly puts into rich nest express delivery cabinet, and the courier still need unpack and inspect to contact the client for the second time, return and send out the article, it is consuming time and hard again.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide an identification and security method of express contraband, and solves the problems of inspection and detection of the contraband when an unmanned express cabinet is deposited.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention discloses an express delivery cabinet device which comprises a network point end and a seat end. The network node end is provided with a network node service terminal and a comprehensive cabinet; the network service terminal comprises an inspection camera, a volume measuring instrument, an electronic scale, a conversation camera and a voice switching board; the integrated cabinet is provided with an electronic lock, a lock control plate and a metal detector; the metal detector is arranged on the integrated cabinet and sleeved at the entrance of the cabinet door, and if metal products are arranged in the package, the metal detector gives an alarm. The seat end comprises a service PC and a video host connected with the service PC, and the service PC comprises an upper computer control module; and the service PC is in communication connection with the peripheral equipment and the comprehensive cabinet of the website service terminal through the USB server. The protocol conversion board is connected with the lock control board, the volume measuring instrument and the metal detector; the upper computer control module is connected with the protocol conversion board through a virtual port mapped by the USB server, and is used for carrying out operations of volume measurement, weighing, switch cabinet door and metal detection result acquisition.
According to the express delivery cabinet device, a customer can call a customer service of a seat end at a network site end. After the customer service is connected, the customer service is conversed with the customer through equipment such as a conversation camera, a microphone and the like. And the identity of the client is checked through the identity card reader and the checking camera. Obtain the weight of mail article through the electronic scale, obtain the volume of mail article through the volumetric measuring instrument, open the cabinet door of synthesizing the cabinet through the electronic lock and let the customer save the parcel, detect whether there is the prohibited goods in the user's parcel through the metal detector. The customer service fills in the post express bill, the customer signs and confirms the content of the express bill on the screen, and the customer service prints the express bill to the customer through the remote printer. And finally, the customer service remotely opens the cabinet door through the comprehensive cabinet control module, and monitors the client to store the package in the cabinet body.
The invention also discloses a contraband identification and security inspection method based on the express delivery cabinet device, which comprises the following steps:
s100, comparing the person and the certificate, and verifying the identity of the sender;
s200, package inspection:
s201: the inspection camera is aligned to the electronic weighing platform area, and a sending article image of the electronic weighing platform area is collected;
s202: and (3) performing edge extraction on the binary image after image segmentation to obtain the outer edge of the target, performing image analysis on the extracted target edge, detecting whether the inspection object conforms to the image characteristics of the contraband, and returning a contraband identification result. The method specifically comprises the following steps: extracting a video image at a video host, and sending an alarm to a service PC by the video host when the video host detects the shapes of the gun and the cutter; or the contraband is actively identified manually, the position of the contraband is selected, and the graphical information is marked.
S203: and judging whether the sending is allowed or not according to the contraband identification result.
S300, parcel storage:
s301: placing the parcel of the article to be sent into a parcel cabinet through a metal detector;
s302: the upper computer control module receives an output image of the X-ray detector, performs safety inspection on the detected image, performs preprocessing, feature extraction and mode identification on the image, and judges whether a cutter, a gun or a drug exists or not;
S303: and judging whether the sending is allowed or not according to the identification result of the upper computer control module, and finishing the sending process.
Further, verifying the identity of the sender specifically comprises the following steps:
s101: the service PC remotely reads the ID card number and the ID card head portrait through the USB server;
s102: the conversation camera acquires a client head portrait, calls an identification service through a Web service or HTTP interface, completes identification and comparison of the acquired client head portrait and an identity card picture on a certificate identification server, and returns a result;
s103: and judging whether the sending is allowed or not according to the testimony comparison and identification result.
Further, the step S202 of obtaining the outer edge of the target adopts an eight-neighborhood outer edge extraction method, and the specific algorithm is as follows:
(1) searching the whole image from left to right and from top to bottom to find a starting point, wherein the starting point is used as a current point (x, y), then searching a next boundary point, and the next boundary point is necessarily in eight neighborhoods of the point (x, y), wherein the directions from the point (x, y) to adjacent pixels are coded as 0,1,2 and 3 … 7 in a counterclockwise sequence;
(2) when the next boundary point is determined, the method is divided into four cases, and when the left side of (x, y), namely the position of the coded 4 is a background area, the position is searched according to the sequence of 3 → 2 → 1 → 0 → 7 → 6; when the upper side (x, y), namely the code 2 position, is a background region and the code 4 position and the code 0 position are target regions, searching according to the 1 → 0 → 7 → 6 → 5 position; when the (x, y) right side, i.e., the coded 0 position, is the background region, searching according to the position 7 → 6 → 5 → 4 → 3 → 2; when the (x, y) lower edge, i.e., the code 6 position, is a background region and the code 4 position and the code 0 position are target regions, the search is performed in accordance with the 5 → 4 → 3 → 2 → 1 position. The gray value of the determined boundary point is assigned to a gray value greater than 1, which can be distinguished from the undetected boundary points.
(3) And (3) stopping searching when the next boundary point of (x, y) is assigned as the gray value of the boundary point determined in (2), otherwise, continuing the step (2), and transforming the image when the searching of the outer edge of the target is finished, so that the gray value of the target edge is 1, and the gray values of other areas are 0.
(4) Establishing a template of an identification library of contraband of a cutter and a gun, ensuring the resolution of the template visible to naked eyes, and collecting multi-angle templates of the contraband of the gun and the like; and comparing the edge image obtained in the step s3 with the identification library template of the contraband to compare the feature similarity, and completing the contraband identification. And establishing a template library according to material classification of the articles, comparing the edge images with the contraband templates to determine the similarity of the characteristics, and further determining which contraband exists in one image.
The eight-neighborhood outer edge extraction method is good, the outer edge of the target can be well reflected, and the edge is composed of single pixel points, so that the image analysis is carried out by adopting the edge extracted by the eight-neighborhood outer edge tracking algorithm.
Further, the detection method of the metal product in S301 is that the metal detector implements multi-parameter measurement by adopting a digital signal processing mode; a self-excitation type detection coil is adopted to induce metal, and an amplitude value is obtained by an induction signal through an amplitude value amplification circuit, so that the size of the metal block is judged; different frequencies are obtained through a frequency detection circuit, and classification of metal types is achieved.
The metal detection door is composed of a plurality of turns of coils as a probe part of the detector, when the package mixed with metal articles is stored in the locker, the metal detection door generates induced electromotive force and feeds the induced electromotive force back to the single chip microcomputer control unit, and therefore the upper computer control module obtains a detection result of the metal detector through the USB server.
Further, the detection method for the X-ray detector in S302 is to select a processing means combining two segmentation methods of threshold selection and region growing on the basis of RGB color space by comparing different color spaces and different image segmentation methods for the characteristics of the X-ray detection image, and completely segment the object of the same material;
establishing a contraband template library to facilitate the feature extraction of contraband; identifying the X-ray detection image, processing the X-ray detection image based on a Zernike moment method, and finally identifying and marking forbidden articles in the security inspection image; or the contraband is actively identified manually, the position of the contraband is selected, and the graphical information is marked. A layer-by-layer progressive processing mode is adopted from image preprocessing, and the efficiency and the accuracy of contraband identification are improved from simple matching to precise matching. The time for the courier to open the package for inspection is saved, and the safety of express delivery transportation is improved. The method for identifying the X-ray detection image comprises the following steps: the boundary contour is represented by the feature points of the polygon using a continuous fourier transform with approximating straight line segments within the polygon. The improved Fourier descriptor method can reduce the number of samples and the time required by operation, the polygonal feature points can keep the shape features, the number of vertexes of the polygonal feature points is less than the number of the required sampling points, and the operation speed of Fourier transform is improved.
The invention has the following beneficial effects: on the basis of the unmanned parcel remote locker, a device and a system for checking and detecting parcels of express contraband are provided, and the device and the system can be applied to the occasions of parcel deposit, express receiving and dispatching, greatly improve the safety level of express cabinet deposit and ensure the safety of the express circulation field.
Drawings
Fig. 1 is a schematic diagram of a method for identifying and security-checking contraband in an embodiment of the present invention.
Fig. 2 is a schematic view of a network point service terminal of an express cabinet device for contraband identification and security check according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating identification and security inspection methods of contraband according to an embodiment of the present invention.
Fig. 4 is a flowchart of package inspection of the method for contraband identification and security inspection according to the embodiment of the present invention.
Fig. 5 is a flowchart of parcel storage in the method for contraband identification and security inspection according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following embodiments and accompanying drawings.
The utility model provides an unmanned express delivery cabinet, passes through the flow that the parcel was examined and is looked, weighed, the express delivery is listed as and is printed, the payment, the parcel is stored, and the function that express delivery was received and dispatched can be accomplished in this parcel deposit. The express contraband identification and security inspection device of the embodiment is applied to the steps of sending a parcel and storing a package in an unmanned express cabinet: as shown in fig. 1, before sending a mail, a witness comparison needs to be performed on a client, so that the requirement of sending the mail by real name in express at present is met; when sending the article, the customer service checks whether the article contains contraband articles such as a cutter, a gun and the like by using the inspection camera; after the parcel is posted, the customer stores the parcel in an express cabinet, and whether drugs exist in the parcel is checked through X-ray.
As shown in fig. 2, includes a mesh point end and an agent end. The network point end is provided with a network point service terminal (namely a network point end video host machine in the figure) and a comprehensive cabinet; the seat end is provided with a video host and a service PC. The network service terminal is provided with a vision inspection camera, a conversation camera, a USB server, a metal detector, an ID card reader, an electronic scale, a ticket printer, an electronic lock, a lock control board, a protocol conversion board, a volume measuring instrument and a sign pen; a wrapping cabinet is arranged on the comprehensive cabinet, and a metal detector is installed on the cabinet body of the wrapping cabinet. The seat end is provided with a bar code scanner and a printer. The inspection camera and the conversation camera are in communication connection with the video service terminal through the website service terminal; the ID card reader and the metal detector are in communication connection with a service PC through a USB server, and the service PC is connected with a certificate identification server.
According to the express delivery cabinet device, a customer can call a customer service of a seat end at a network site end. After the customer service is connected, the system is in conversation with the customer through equipment such as a conversation camera, a microphone and the like. And the identity of the client is checked through the identity card reader and the checking camera. Obtain the weight of mail article through the electronic scale, obtain the volume of mail article through the volumetric measuring instrument, open the cabinet door of synthesizing the cabinet through the electronic lock and let the customer save the parcel, detect whether there is the prohibited goods in the user's parcel through the metal detector. The customer service fills in the post express bill, the customer signs and confirms the content of the express bill on the screen, and the customer service prints the express bill to the customer through the remote printer. And finally, the customer service remotely opens the cabinet door through the comprehensive cabinet control module, and monitors the client to store the package in the cabinet body.
On the basis of the flow of package inspection, weighing, express bill printing, payment and package storage of the unmanned express cabinet, the method improves the safety of sending the express by the unmanned express cabinet through three steps of testimony comparison, package inspection and package storage.
First part (as in fig. 3): comparison of testimony and testimony
S101: deploying a certificate recognition server on a cloud server; the client places the identity card at the reader location; reading the ID card number and the ID card head portrait.
S102: the customer service obtains the head portrait of the customer through the inspection camera.
S103: the witness comparison module acquires a live face image and an identity card picture, and uploads the live face image and the identity card picture to a witness comparison server of the ministry of public security through a web service or HTTP interface.
S104: and after the identification and the comparison are completed, returning a result.
S105: and the customer service informs the customer whether to allow the mail according to the identification result of the witness contrast. And the sending is allowed when the testimony comparison is passed.
Second part (fig. 4): s201, package inspection
S202: the customer places the package in the weigh platform area and the customer spreads the package contents.
S203: the guest takes the inspection camera and aims at the weighting platform area, inquires and visuals the article of sending.
S204: the package inspection module processes the package inspection module through image feature extraction and image edge detection algorithms.
S205: and (5) comparing the shapes of the images.
S206: and detecting whether the articles to be inspected contain contraband articles such as a knife, a gun, a baton and the like, and returning a contraband article identification result.
S207: and carrying out manual camera verification on the identified images of the guns and the cutters.
S208: and the customer service informs the customer service of allowing the mail according to the checking result if the checking is passed.
S209: the customer cases the package.
Third section (fig. 5): s301, storing the package
S302: and a metal detector is arranged on the cabinet body of the parcel locker. And opening the cabinet door, packaging the packages by the customer, and placing the packages into a package cabinet through a metal detector.
S303: detecting whether metal is present in the package. And the upper computer control module remotely acquires an output image of the metal detector.
S304: the upper computer control module carries out safety inspection on typical forbidden articles (mainly knives and guns), and the important content is to identify the detection results of the knives and guns. The method mainly comprises the steps of preprocessing an original image, extracting features and identifying a mode;
s305: the X-ray detector is used for detecting whether drugs and guns exist in the package;
s306: according to the detection result of S305, if no contraband exists, executing S307 to finish the sending process; otherwise execution S308 does not allow the customer to deposit the package.
The method for detecting the drugs in the S05 comprises the following steps: aiming at the characteristics of the X-ray security inspection image, a processing means of combining two segmentation methods of threshold selection and region growing on the basis of RGB color space is selected through comparison of different color spaces and different image segmentation methods, objects of the same material are completely segmented, and guarantee is provided for further identification below.
Firstly, the security inspection image is identified by using an improved Fourier descriptor method, and then the security inspection image is processed based on a Zernike moment method. When the characteristics are extracted, a known prohibited object template is needed, the characteristics of the prohibited objects are conveniently extracted by establishing a prohibited object template library, and finally the prohibited objects are identified and marked in the security inspection image. A layer-by-layer progressive processing mode is adopted from image preprocessing, and the efficiency and the accuracy of contraband identification are improved from simple matching to precise matching.
The basic idea of the fourier descriptor method is that, assuming that objects are surrounded by a closed curve lock, the shape of the object can be represented, the fourier series is normalized by a periodic function whose shape boundary is the perimeter, and the periodic function can be represented as the coordinate change x (1) + jy (1) of the moving point p (1) around the boundary curve. When the coefficient term z (k) of the fourier series reaches the order, the shape of the object can be completely extracted and restored.
The method adopts a method of using continuous Fourier transform to approximate straight line segments in a polygon to reduce the sampling number and the time required by operation, uses the polygon characteristic points to represent the boundary contour, and can keep the shape characteristics of the polygon characteristic points, and the number of vertexes of the polygon characteristic points is less than the number of sampling points required before, thereby improving the operation speed of the Fourier transform.
The X-ray detector can scan out drugs by X-ray, and the metal detector can distinguish the drugs by means of color and identify the X-ray image of the drugs. If heroin is in the form of powder or regular blocks at normal pressure, it appears as a characteristic orange yellow color on the detector of the X-ray system.
In the embodiment, an X-ray detector is installed at an inlet of an integrated cabinet, an output image of a metal detector is transmitted to a service PC through a USB server, an upper computer module carries out safety inspection on the image, carries out preprocessing, feature extraction and mode identification on the image and judges whether a cutter, a gun or a drug exists or not; or the contraband is actively identified manually, the position of the contraband is selected, and the graphical information is marked.
The method provides a step of inspecting express packages and a step of checking contraband in the process of sending the packages. If the client sends an article and has forbidden articles such as gun, cutter in, then not allow to put into the express delivery cabinet, saved the time that the express delivery person opened the parcel and examined the sight, improved the security of express delivery transportation.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention.
Claims (6)
1. The utility model provides an identification of express delivery contraband, security installations which characterized in that: comprises a network point end and an agent end;
the network node end is provided with a network node service terminal and a comprehensive cabinet; the network service terminal comprises an inspection camera, a volume measuring instrument, an electronic scale, a conversation camera and a voice switching board; the integrated cabinet is provided with an electronic lock, a lock control plate and a metal detector; the metal detector is nested at the entrance of the door of the comprehensive cabinet, and the metal detector gives an alarm if metal products are contained in the package; the seat end comprises a service PC and a video host connected with the service PC, and the service PC comprises an upper computer control module; the service PC is in communication connection with the peripheral equipment of the website service terminal and the comprehensive cabinet through the USB server; the protocol conversion board is connected with the lock control board, the volume measuring instrument and the metal detector; the upper computer control module is connected with the protocol conversion board through a virtual port mapped by the USB server.
2. An identification and security inspection method for express contraband is characterized in that: the method comprises the following steps:
S100, comparing the person and the certificate, and verifying the identity of the sender;
s200, package inspection:
s201, aligning the inspection camera to an electronic weighing platform area, and collecting a mail sending article image in the electronic weighing platform area;
s202, performing edge extraction on the binary image after image segmentation to obtain the outer edge of a target, performing image analysis on the extracted target edge, detecting whether the inspected object meets the image characteristics of contraband or not, and returning a contraband identification result; the method specifically comprises the following steps: extracting a video image at a video host, and when the video host detects the shapes of the gun and the cutter, sending an alarm to a business PC (personal computer) by the video host, or actively identifying contraband by manpower, selecting the position of the contraband, and labeling the graphic information;
s203: judging whether the sending of the articles is allowed or not according to the contraband identification result;
s300, parcel storage:
s301, placing the parcel of the article to be sent into a parcel cabinet through a metal detector;
s302, the upper computer control module receives an output image of the X-ray detector, performs safety inspection on the detected image, performs preprocessing, feature extraction and mode identification on the image, and judges whether a cutter, a gun or a drug exists or not;
and S303, judging whether the sending is allowed or not according to the identification result of the upper computer control module, and finishing the sending process.
3. The express contraband identification and security inspection method of claim 2, wherein the S100 verification of the identity of the sender specifically comprises the following steps:
s101, a service PC remotely reads an identity card number and an identity card head portrait through a USB server;
s102, a conversation camera acquires a client head portrait, calls an identification service through a Web service or HTTP interface, completes identification and comparison of the acquired client head portrait and an identity card picture on a certificate identification server, and returns a result;
and S103, judging whether the sending is allowed or not according to the testimony comparison and identification result.
4. The express contraband identification and security inspection method according to claim 2, wherein S202 adopts an eight-neighborhood outer edge extraction method, and specifically comprises the following steps:
s1, searching the whole image from left to right and from top to bottom, finding the starting point as the current point (x, y), then searching the next boundary point, the next boundary point must be in the eight neighborhood of the point (x, y), wherein the direction from the point (x, y) to the adjacent pixel is coded as 0,1,2,3 … 7 in the counterclockwise sequence;
s2, dividing into four cases when determining the next boundary point, when the (x, y) left side, i.e. the coding 4 position, is the background area, searching according to the position 3 → 2 → 1 → 0 → 7 → 6; when the upper side (x, y), namely the code 2 position, is a background region and the code 4 position and the code 0 position are target regions, searching according to the 1 → 0 → 7 → 6 → 5 position; when the (x, y) right side, i.e., the coded 0 position, is the background region, searching according to the position 7 → 6 → 5 → 4 → 3 → 2; when the (x, y) lower edge, i.e., the code 6 position, is a background region and the code 4 position and the code 0 position are target regions, searching by the 5 → 4 → 3 → 2 → 1 position; assigning the gray value of the determined boundary point to a gray value greater than 1;
s3, stopping searching when the next boundary point of (x, y) is assigned as the gray value of the boundary point determined in s2, otherwise continuing s2, and transforming the image when the search of the outer edge of the target is finished, so that the gray value of the target edge is 1 and the gray values of other areas are 0;
s4, establishing a recognition library template of contraband of the cutter and the gun, ensuring the resolution of the template visible to naked eyes, and collecting multi-angle templates of the contraband of the gun and the like; and comparing the edge image obtained in the step s3 with the identification library template of the contraband to compare the feature similarity, and completing the contraband identification.
5. The express contraband identification and security inspection method according to claim 2, wherein the detection method of the metal product in S301 is as follows:
the metal detector adopts a digital signal processing mode, a self-excitation type detection coil is adopted to induce metal, and an amplitude value is obtained by an induction signal through an amplitude value amplifying circuit, so that the size of a metal block is judged; different frequencies are obtained through a frequency detection circuit, and classification of metal types is realized; and the upper computer control module acquires the detection result of the metal detector through the USB server.
6. The express contraband identification and security inspection method of claim 2, wherein the detection method of the X-ray detector in S302 is as follows:
Aiming at the characteristics of an X-ray detection image, selecting a processing means combining two segmentation methods of threshold selection and region growing on the basis of RGB color space by comparing different color spaces and different image segmentation methods, and completely segmenting objects made of the same material;
establishing a contraband template library to facilitate the feature extraction of contraband;
identifying the X-ray detection image, processing the X-ray detection image based on a Zernike moment method, and finally identifying and marking forbidden articles in the security inspection image; or the contraband is actively identified manually, the position of the contraband is selected, and the graphical information is marked;
the method for identifying the X-ray detection image comprises the following steps: the boundary contour is represented by the feature points of the polygon using a continuous fourier transform with approximating straight line segments within the polygon.
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