CN111598147B - International express image checking device and system based on CT equipment - Google Patents
International express image checking device and system based on CT equipment Download PDFInfo
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Abstract
The invention provides an international express image checking device and system based on CT equipment. The checking device and the checking system based on the CT equipment international express image can comprise a checking device main body, wherein the checking device main body is covered outside a conveying belt for conveying international express, an object inlet and an object outlet are symmetrically formed in the upper side wall of the checking device main body, the object inlet and the object outlet are symmetrically hinged to form a protective upper cover, an installation table is integrally formed in an inner cavity of the checking device main body, a push rod motor is symmetrically hinged to the upper side wall of the installation table on one side, the output end of the push rod motor is hinged to the protective upper cover of the object inlet, and an electromagnetic lock is arranged on the protective upper cover of the object outlet; the CT equipment is arranged on the checking device main body; a bar code scanner. Through providing a comparatively confined space, maintain the clean degree in the device to guarantee the definition degree and the clean and tidy of article of shooting the effect.
Description
Technical Field
The invention relates to the field of international express inspection, in particular to an international express image inspection device and system based on CT equipment.
Background
The security inspection of international express is one of the important contents of port inspection. The content of safety inspection is mainly to inspect whether dangerous goods such as firearms, ammunition, flammability, explosive, corrosion, toxic radioactivity, drugs and the like are carried in the international express mail so as to ensure that the international express mail can enter the border safely. In the safety inspection of international express, an X-ray machine is generally used for carrying out perspective scanning on express and the like to obtain different images of different articles, so that dangerous articles hidden inside are found. And sending the international express to be inspected into an X-ray inspection channel, and triggering an X-ray source to emit an X-ray beam. The X-ray beam passes through the international express to be inspected, and after being partially absorbed, the X-ray beam bombards a semiconductor detector arranged in the channel. The detector converts the X-rays into signals and sends the signals to the controller for further processing, so that images with different colors are displayed on the screen. Simply, orange represents organic matter, such as food, plastic, etc.; books, ceramics, etc. appear green; the metal appears blue. However, lawbreakers are clamped in the international express mail through various methods, the position of the existing X-ray machine in the inspection equipment is fixed, the X-ray machine cannot scan the international express mail at a short distance, the imaging effect and the resolution ratio are further influenced, and the phenomena of missing detection and error detection exist.
Therefore, the equipment for checking the international express mails by using the CT scan is provided, so that the quick and accurate customs inspection is realized. CT scanners need to ensure that they check the overall cleanliness of the device and the tightness when they are idle. And customs express mail machine inspection is mainly carried out by virtue of CT equipment, the express mail can be released only by rapidly checking the pictures shot by the CT equipment with information stored in the system, but the current CT scanning equipment is difficult to complete rapid inspection. Therefore, there is an urgent need for a checking apparatus which can ensure the cleanliness of the checking apparatus, can perform a quick check, and can autonomously learn about the CT checking apparatus.
Disclosure of Invention
The invention aims to provide an international express image checking device and system based on CT equipment, which can solve the problems in the prior art and realize the quick check of international express.
According to one aspect of the invention, an international express image checking device based on CT equipment is provided, which comprises:
the inspection device comprises an inspection device body (1), wherein the inspection device body (1) covers a conveyor belt for conveying international express items, an object inlet (2) and an object outlet (3) are symmetrically formed in the upper side wall of the inspection device body (1), the object inlet (2) and the object outlet (3) are symmetrically hinged to a protective upper cover (4), an installation table (5) is integrally formed in the inner cavity of the inspection device body (1), a push rod motor (6) is symmetrically hinged to the upper side wall of the installation table (5) on one side, the output end of the push rod motor (6) is hinged to the protective upper cover (4) of the object inlet (2), and an electromagnetic lock (7) is arranged on the protective upper cover (4) of the object outlet (3);
a CT device (8), wherein the CT device (8) is arranged on the checking device body (1);
a barcode scanner (9), the barcode scanner (9) being embedded in the inspection apparatus body (1).
Furthermore, the other side the upper side wall of the mounting table (5) is provided with a sliding groove (10), the side wall of one side of the object outlet (3) of the inspection device main body (1) is provided with an forbidden object outlet, the inner wall of the sliding groove (10) is connected with an L-shaped shell (11) in a sliding mode, the L-shaped shell (11) is used for shielding the forbidden object outlet, the outer side wall of the L-shaped shell (11) is provided with an alarm (12), the inner wall of the sliding groove (10) is embedded with a motor (13), the output end of the motor (13) is provided with a lead screw (14), the side wall of the L-shaped shell (11) is provided with a threaded hole (15), and the inner wall of the threaded hole (15) is in threaded connection with the.
Furthermore, a supporting plate (16) for receiving the L-shaped shell (11) is arranged outside the side wall of the checking device body (1) on the side of the object outlet (3), and a support column is arranged on the lower side wall of the supporting plate (16).
Further, the upper side wall of the support plate (16) is provided with a rotary bearing (17).
The device further comprises a U-shaped mounting block (18), wherein one end of a balance rod (19) is symmetrically hinged to the side wall of the U-shaped mounting block (18), and the other end of the balance rod (19) is hinged to the protective upper cover (4) on one side of the object inlet (2).
Furthermore, the inner wall of one side of the object inlet (2) of the checking device main body (1) is provided with a sliding seat (20), two ends of the U-shaped mounting block (18) are connected to the sliding seat (20) in a sliding manner, and the side wall of two ends of the U-shaped mounting block (18) is provided with a limiting bulge (21).
Furthermore, a brush head mounting chamber (22) is arranged on the mounting table (5) on one side of the object inlet (2), and a crawler brush head (23) is arranged in the brush head mounting chamber (22).
Further, the inspection device comprises a positioning plate (24), wherein the positioning plate (24) is connected with the crawler brush head (23) through a spring (25), and the positioning plate (24) is detachably connected to the outer side wall of the inspection device body (1) on the side of the object inlet (2).
According to another aspect of the present invention, there is provided a checking system for international express mail images based on CT equipment, comprising: the system comprises a database and a processing device in communication connection with the database;
the processing device is in communication connection with the bar code scanner (9), the CT equipment (8), the alarm (12), the motor (13) and the electromagnetic lock (7);
the database includes:
a clearance form module, wherein the clearance form module comprises clearance form information;
the image characteristic storage module is used for storing the characteristic information of the CT images of various articles;
the CT image storage module is used for storing images formed by scanning of the CT device (8);
the abnormal express form module is used for storing the information of the abnormal express form;
the processing device receives express item number information obtained by scanning express items by a bar code scanner (9), calls corresponding clearance form information from a clearance form module of a database, and calls image characteristic data corresponding to the items from the image characteristic storage module according to item information recorded by the clearance form information;
the processing device receives image data formed by scanning express mails by the CT equipment (8), compares the CT image with image characteristic data of a declaration article of a customs declaration form, and controls the electromagnetic lock (7) in communication connection with the processing device to be unlocked if the CT image of the express mail is matched with the image characteristic data;
if the CT image is not matched with the image characteristic data of the article declared by the customs declaration, the express is marked as an abnormal express, the processing device controls a motor (13) and an alarm (12) which are in communication connection with the processing device to be started, and the L-shaped shell (11) is moved out of the checking device main body (1) and gives an alarm.
Further, the step of judging whether the feature data of the CT image matches the feature data of the preset image of the image feature storage module includes:
calculating a matching coefficient of the characteristic data of the CT image and the characteristic data of a preset image of the image characteristic storage module;
when the matching coefficient is larger than a preset threshold value, determining that the express mail is consistent with customs declaration information;
the matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module is calculated according to the following formula:
b＝max(r(x,yj)),j＝1,2...m
b is a matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module, x is the characteristic data of the CT image, y is the characteristic data of the preset image of the image characteristic storage module, and r (x, y)j) The correlation coefficient of the characteristic data of the CT image and the characteristic data of the jth preset image is obtained, n is the number of the characteristic data, M is the number of the preset images, M is the average value of the characteristic data of the CT image, and Q is the average value of the characteristic data of the preset images.
The invention has the beneficial effects that: through providing a comparatively confined space, maintain the clean degree in the device to guarantee the definition degree and the clean and tidy of article of shooting the effect.
Through setting up the clear structure of brushing of supplementary conveyer belt, further maintained the clean degree of international express mail, reduce because of the influence to subsequent processing that the conveyer belt leads to not clean.
Through the support structure of the L-shaped shell for output, the running stability of the L-shaped shell is guaranteed. And the stable opening structure of the upper cover is protected at the object inlet, so that the effect of stable use of the maintenance device is achieved.
By arranging the checking system with the learning function, the international express mail is normally checked, and meanwhile, the international express mail images which are in compliance and are not stored in the image feature storage module are stored and learned according to the comparison of customs personnel on suspicious articles, so that the problem that the checking efficiency is influenced due to the fact that the stored information of the image feature storage module is updated too slowly is solved.
The apparatus of the present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in greater detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts.
Fig. 1 is a schematic top view of an international express mail image checking device based on CT equipment according to an exemplary embodiment of the present invention.
Fig. 2 is a front sectional view of an international express inspection device based on CT equipment according to an exemplary embodiment of the present invention.
Fig. 3 is a detailed view of an examination apparatus for international express mail image based on CT equipment according to an exemplary embodiment of the present invention at a.
Fig. 4 is a left side view of an object inlet of an international express inspection device based on a CT apparatus according to an exemplary embodiment of the present invention.
Fig. 5 is a detailed view of an examination apparatus for international express mail image based on CT equipment according to an exemplary embodiment of the present invention at b.
Fig. 6 is a schematic structural diagram of an international express mail image checking system based on a CT device according to an exemplary embodiment of the present invention.
Description of reference numerals:
1. inspecting the apparatus main body; 2. an article inlet; 3. an article outlet; 4. protecting the upper cover; 5. an installation table; 6. a push rod motor; 7. an electromagnetic lock; 8. a CT device; 9. a barcode scanner; 10. a chute; 11. an L-shaped housing; 12. an alarm; 13. a motor; 14. a lead screw; 15. a threaded hole; 16. a support plate; 17. a rotating bearing; 18. a U-shaped mounting block; 19. a balancing pole; 20. a sliding seat; 21. a limiting bulge; 22. a brush head mounting chamber; 23. a track brush head; 24. positioning a plate; 25. a spring.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides an international express image checking device based on CT equipment, which comprises:
the inspection device comprises an inspection device body, wherein the inspection device body covers a conveyor belt for conveying international express items, an object inlet and an object outlet are symmetrically formed in the upper side wall of the inspection device body, the object inlet and the object outlet are symmetrically hinged with a protective upper cover, an installation table is integrally formed in the inner cavity of the inspection device body, a push rod motor is symmetrically hinged to the upper side wall of the installation table on one side, the output end of the push rod motor is hinged to the protective upper cover of the object inlet, and an electromagnetic lock is arranged on the protective upper cover of the object outlet;
the CT equipment is arranged on the checking device main body;
a barcode scanner embedded in the inspection apparatus main body.
Through providing a comparatively confined space, maintain the clean degree in the device to guarantee the definition degree and the clean and tidy of article of shooting the effect.
To facilitate understanding of the solution of the embodiments of the present invention and the effects thereof, a specific application example is given below. It will be understood by those skilled in the art that this example is merely for the purpose of facilitating an understanding of the present invention and that any specific details thereof are not intended to limit the invention in any way.
Fig. 1 is a schematic top view of an international express mail image checking device based on CT equipment according to an exemplary embodiment of the present invention. Fig. 2 is a front sectional view according to the present invention. Fig. 3 is a detail view at a according to the present invention. Fig. 4 is a left side view at the entrance of an article according to the present invention. Fig. 5 is a detailed view at b according to the present invention. Fig. 6 is a schematic structural diagram of an international express mail image checking system based on a CT device according to an exemplary embodiment of the present invention.
Referring to fig. 1-6, the present invention provides an international express image checking device based on CT equipment, including:
checking device main part 1, checking device main part 1 covers the conveyer belt of locating carrying international express mail, article import 2 and article export 3 have been seted up to checking device main part 1's last lateral wall symmetry, article import 2 and article export 3 all symmetry articulate there is protection upper cover 4, checking device main part 1's inner chamber integrated into one piece has mount table 5, the last lateral wall symmetry of one side mount table 5 articulates there is push rod motor 6, the output of push rod motor 6 articulates in article import 2's protection upper cover 4, push rod motor 6 stretches out and draws back simultaneously in both sides like this, can guarantee that article import 2 department protection upper cover 4 symmetry is opened, article export 3's protection upper cover 4 is equipped with electromagnetic lock 7, guarantee that article export 3 protection upper cover 4 can open or close according to the demand.
The CT equipment 8 is arranged on the checking device main body 1, so that the express items transported by the conveyer belt can be checked in all directions by the CT equipment 8;
the bar code scanner 9, the bar code scanner 9 is embedded and installed in the checking device body 1, and the interference caused by the surrounding environment is reduced by placing the scanning parts of the CT device 8 and the bar code scanner 9 in a relatively closed environment.
In order to realize that suspicious or need to detain taking out of express mail, spout 10 has been seted up to the last lateral wall of opposite side mount table 5, the export of contraband has been seted up to the lateral wall of 3 one sides of article export of inspection device main part 1, the inner wall sliding connection of spout 10 has L type casing 11, and L type casing 11 is used for sheltering from the export of contraband, the lateral wall of L type casing 11 is equipped with alarm 12, realize reporting to the police when L type casing 11 shifts out, motor 13 is installed in the inner wall embedding of spout 10, the output of motor 13 is equipped with lead screw 14, the lateral wall of L type casing 11 is equipped with screw hole 15, and the inner wall spiro union lead screw 14 of screw hole 15, cooperation through the spiro union, can realize the adjustment of L type casing 11 shift position through manipulation motor 13.
In order to ensure the stability of the L-shaped housing 11 sliding out, a support plate 16 for receiving the L-shaped housing 11 is provided outside the side wall of the inspection device body 1 on the article outlet 3 side, and a support column is provided on the lower side wall of the support plate 16. Preferably, the upper side wall of the support plate 16 is provided with a rotating bearing 17 to ensure the smoothness of sliding out of the L-shaped shell 11.
In order to ensure the stability and linkage of opening the upper protection cover 4 at the position of the object inlet 2, the device further comprises a U-shaped mounting block 18, the side wall of the U-shaped mounting block 18 is symmetrically hinged with one end of a balance rod 19, and the other end of the balance rod 19 is hinged with the upper protection cover 4 at one side of the object inlet 2, so that the upper protection cover 4 is ensured to be symmetrically and stably opened.
In order to ensure the stability of the displacement of the U-shaped mounting block 18, the inner wall of the article inlet 2 side of the inspection device main body 1 is provided with a sliding seat 20, two ends of the U-shaped mounting block 18 are slidably connected to the sliding seat 20, the side walls on two ends of the U-shaped mounting block 18 are provided with limiting protrusions 21, and the displacement distance of the U-shaped mounting block 18 is limited through the matching of the limiting protrusions 21 and the sliding seat 20, so as to limit the position where the protection upper cover 4 is closed.
In order to facilitate the cleaning of the conveyor belt when required, the mounting table 5 on one side of the article inlet 2 is provided with a brush head mounting chamber 22, and a crawler brush head 23 is arranged in the brush head mounting chamber 22.
Still include locating plate 24, locating plate 24 is connected through spring 25 with track brush head 23, guarantees through spring 25 elasticity that track brush head 23 acts on the conveyer belt, and locating plate 24 can dismantle the lateral wall of connecting in article import 2 one side of examining device main part 1 to the convenience is to the cleanness of track brush head 23. Preferably, the positioning plate 24 is fixedly mounted to the outer side wall of the inspection device body 1 by screws.
According to another aspect of the present invention, there is also provided a checking system for international express mail images based on CT equipment, including:
the system comprises a database and a processing device in communication connection with the database;
the processing device is in communication connection with the bar code scanner, the CT equipment, the alarm, the motor and the electromagnetic lock;
the database includes:
the clearance form module comprises clearance form information;
the image characteristic storage module is used for storing the characteristic information of the CT images of various articles;
the CT image storage module is used for storing images formed by scanning of the CT equipment;
and the abnormal express form module is used for storing the abnormal express form information.
As an embodiment, the working process of the checking system is as follows:
the processing device receives express item number information obtained by scanning express items by the bar code scanner 9, calls corresponding clearance form information from a clearance form module of the database, calls image characteristic data corresponding to the items from the image characteristic storage module according to the item information recorded by the clearance form information, and compares the image characteristic data with the image characteristic data;
the processing device receives image data formed by scanning the express mails by the CT equipment 8, compares the CT image with image characteristic data of a declaration article of a customs declaration form, if the CT image of the express mail is matched with the image characteristic data, the CT image is released, and the processing device controls the electromagnetic lock 7 in communication connection with the processing device to be opened, so that an operator can conveniently open the protective upper cover 4 at the object outlet 3 and take away the qualified international express mails on the conveyor belt;
if the CT image is not matched with the image characteristic data of the article declared by the customs declaration form, the article is marked as an abnormal article and cannot be released, the processing device controls the motor 13 and the alarm 12 which are in communication connection with the processing device to be started, the L-shaped shell 11 is moved out of the checking device main body 1 and gives an alarm, customs personnel are warned to take down the suspicious article on the L-shaped shell 11, and recheck is carried out according to the stored information of the abnormal article form module;
further, the processing device records the abnormal express information to the abnormal express form module, reminds people of rechecking, removes information from the abnormal express form module when the rechecking passes, releases the information normally, and informs customs personnel to take corresponding measures when the rechecking cannot pass.
Further, if a new article is involved and image feature extraction is not performed before, image features are extracted from the CT image and stored in the image feature storage module to generate new feature data for later use, so that the self-learning effect is achieved.
Preferably, the determining whether the feature data of the CT image and the feature data of the preset image of the image feature storage module reach the matching threshold includes:
calculating a matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module;
when the matching coefficient is larger than a preset threshold value, determining that the express mail is consistent with the customs declaration information; and when the matching coefficient is less than or equal to a preset threshold value, judging that the matching coefficient is inconsistent with the customs declaration information, and determining the express as an abnormal express or a suspicious article. Preferably, the preset threshold value of each product category can be set according to different product categories, so that the purposes of adjustable verification scale and controllable efficiency are achieved.
The matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module is calculated according to the following formula:
b＝max(r(x,yj)),j＝1,2...m
b is a matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module, x is the characteristic data of the CT image, y is the characteristic data of the preset image of the image characteristic storage module, and r (x, y)j) The correlation coefficient of the characteristic data of the CT image and the characteristic data of the jth preset image is obtained, n is the number of the characteristic data, M is the number of the preset images, M is the average value of the characteristic data of the CT image, and Q is the average value of the characteristic data of the preset images.
Respectively calculating correlation coefficients of the characteristic data of the acquired CT image and the characteristic data of the preset image of the image characteristic storage module prestored in the database, wherein the larger the correlation coefficient is, the more similar the characteristic data of the acquired image and the characteristic data of the preset image is, respectively calculating the correlation coefficients of the acquired image and the preset images, acquiring the maximum value of the correlation coefficients, taking the maximum value as a matching coefficient, comparing the matching coefficient with a preset threshold value, and when the matching coefficient is larger than the preset threshold value, determining that the article is consistent with the customs declaration information and releasing the article.
Specifically, the working principle of the system is as follows:
when the system operates, the protection upper cover 4 at the position of the article inlet 2 is opened by controlling the extension of the push rod motors 6 at two sides, international express is placed on the conveying belt, so that in the conveying process, the bar code scanner 9 and the CT equipment 8 shoot the international express in sequence, the bar code scanner 9 scans express single number information obtained by the express, corresponding clearance form information is called from a clearance form module of a database, and image characteristic data corresponding to the article is called from an image characteristic storage module according to article information recorded by the clearance form information and is compared.
And when the data are matched, the information is transmitted to the processing device, and the electromagnetic lock 7 in communication connection with the processing device is controlled to be opened, so that an operator can conveniently open the protective upper cover 4 at the object outlet 3 and take the qualified international express mails on the conveyor belt away. And when the data are not matched, the express item is marked as a suspicious express item and cannot be released, the processing device controls the motor 13 and the alarm 12 which are in communication connection with the processing device to be started, the L-shaped shell 11 is moved out of the checking device main body 1 and gives an alarm, and customs personnel are warned to take down the suspicious item on the L-shaped shell 11.
For abnormal express mails, manual rechecking is needed, the express mail information can be removed from the abnormal express mail form module when the rechecking passes, the abnormal express mails are normally released, and customs personnel are informed to take corresponding measures when the rechecking cannot pass, so that the compliance of the checked goods is ensured.
If a new article is involved and image feature extraction is not performed before, the image features are extracted from the CT image and stored in the image feature storage module to generate new feature data for later use, so that the self-learning effect is achieved, and the problem that the inspection efficiency is influenced due to the fact that the stored information of the image feature storage module is updated too slowly is solved.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. An international express mail image checking device based on CT equipment is characterized by comprising:
the inspection device comprises an inspection device body (1), wherein the inspection device body (1) covers a conveyor belt for conveying international express items, an object inlet (2) and an object outlet (3) are symmetrically formed in the upper side wall of the inspection device body (1), the object inlet (2) and the object outlet (3) are symmetrically hinged to a protective upper cover (4), an installation table (5) is integrally formed in the inner cavity of the inspection device body (1), a push rod motor (6) is symmetrically hinged to the upper side wall of the installation table (5) on one side, the output end of the push rod motor (6) is hinged to the protective upper cover (4) of the object inlet (2), and an electromagnetic lock (7) is arranged on the protective upper cover (4) of the object outlet (3);
a CT device (8), wherein the CT device (8) is arranged on the checking device body (1);
a barcode scanner (9), wherein the barcode scanner (9) is embedded in the inspection apparatus main body (1);
the other side the lateral wall of mount table (5) has seted up spout (10), the inspection device main part (1) the lateral wall of article export (3) one side is seted up there is the export of contraband, the inner wall sliding connection of spout (10) has L type casing (11), just L type casing (11) are used for sheltering from the export of contraband, the lateral wall of L type casing (11) is equipped with alarm (12), motor (13) are installed in the inner wall embedding of spout (10), the output of motor (13) is equipped with lead screw (14), the lateral wall of L type casing (11) is equipped with screw hole (15), just the inner wall spiro union of screw hole (15) lead screw (14).
2. The checking device for the image of the international express mail based on the CT equipment as claimed in claim 1, wherein a supporting plate (16) for receiving the L-shaped shell (11) is arranged outside the side wall of the checking device body (1) on the side of the object outlet (3), and a supporting column is arranged on the lower side wall of the supporting plate (16).
3. The CT-equipment-based international express image checking device according to claim 2, wherein the upper side wall of the support plate (16) is provided with a rotating bearing (17).
4. The CT equipment-based international express image checking device is characterized by further comprising a U-shaped mounting block (18), wherein the side wall of the U-shaped mounting block (18) is symmetrically hinged with one end of a balancing rod (19), and the other end of the balancing rod (19) is hinged with the protective upper cover (4) on one side of the object inlet (2).
5. The checking device for the image of the international express mail based on the CT equipment as claimed in claim 4, wherein the checking device body (1) is provided with a sliding seat (20) on the inner wall of the side of the object inlet (2), the two ends of the U-shaped mounting block (18) are slidably connected with the sliding seat (20), and the side wall of the two ends of the U-shaped mounting block (18) is provided with a limiting protrusion (21).
6. The CT-equipment-based international express image checking device as claimed in claim 1, wherein the mounting table (5) on one side of the object inlet (2) is provided with a brush head mounting chamber (22), and a crawler brush head (23) is arranged in the brush head mounting chamber (22).
7. The CT-equipment-based international express image checking device according to claim 6, further comprising a positioning plate (24), wherein the positioning plate (24) is connected with the crawler brush head (23) through a spring (25), and the positioning plate (24) is detachably connected to the outer side wall of the checking device body (1) on the side of the object inlet (2).
8. An international express mail image checking system based on CT equipment, which utilizes the international express mail image checking device based on CT equipment according to any one of claims 1-7, characterized by comprising: the system comprises a database and a processing device in communication connection with the database;
the processing device is in communication connection with the bar code scanner (9), the CT equipment (8), the alarm (12), the motor (13) and the electromagnetic lock (7);
the database includes:
a clearance form module, wherein the clearance form module comprises clearance form information;
the image characteristic storage module is used for storing the characteristic information of the CT images of various articles;
the CT image storage module is used for storing images formed by scanning of the CT device (8);
the abnormal express form module is used for storing the information of the abnormal express form;
the processing device receives express item number information obtained by scanning express items by a bar code scanner (9), calls corresponding clearance form information from a clearance form module of a database, and calls image characteristic data corresponding to the items from the image characteristic storage module according to item information recorded by the clearance form information;
the processing device receives image data formed by scanning express mails by the CT equipment (8), compares the CT image with image characteristic data of a declaration article of a customs declaration form, and controls the electromagnetic lock (7) in communication connection with the processing device to be unlocked if the CT image of the express mail is matched with the image characteristic data;
if the CT image is not matched with the image characteristic data of the article declared by the customs declaration, the express is marked as an abnormal express, the processing device controls a motor (13) and an alarm (12) which are in communication connection with the processing device to be started, and the L-shaped shell (11) is moved out of the checking device main body (1) and gives an alarm.
9. The international express mail image checking system based on the CT device according to claim 8, wherein the determining whether the feature data of the CT image matches the feature data of the preset image of the image feature storage module comprises:
calculating a matching coefficient of the characteristic data of the CT image and the characteristic data of a preset image of the image characteristic storage module;
when the matching coefficient is larger than a preset threshold value, determining that the express mail is consistent with customs declaration information;
the matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module is calculated according to the following formula:
b＝max(r(x，yj))，j＝1，2...m
b is a matching coefficient of the characteristic data of the CT image and the characteristic data of the preset image of the image characteristic storage module, x is the characteristic data of the CT image, y is the characteristic data of the preset image of the image characteristic storage module, and r (x, y)j) The correlation coefficient of the characteristic data of the CT image and the characteristic data of the jth preset image is obtained, n is the number of the characteristic data, M is the number of the preset images, M is the average value of the characteristic data of the CT image, and Q is the average value of the characteristic data of the preset images.
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| CN202010351320.7A CN111598147B (en) | 2020-04-28 | 2020-04-28 | International express image checking device and system based on CT equipment |
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| CN202010351320.7A CN111598147B (en) | 2020-04-28 | 2020-04-28 | International express image checking device and system based on CT equipment |
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