CN112365487A - Stamp identification method, system, device and storage medium - Google Patents
Stamp identification method, system, device and storage medium Download PDFInfo
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Abstract
The invention discloses a stamp identification method, a system, a device and a storage medium, wherein the method comprises the following steps: the method comprises the steps of obtaining first image information of the stamp to be identified, and obtaining first description information of the stamp to be identified according to the first image information; determining preset image information in a pre-established stamp image library according to the first description information; performing brightness contrast, contrast and structure contrast on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information; and determining the authenticity of the stamp to be identified according to the similarity. According to the stamp identification method and device, on one hand, the matching of the preset image information is achieved, manual searching is not needed, the stamp identification efficiency is improved, on the other hand, the authenticity of the stamp to be identified is determined through triple comparison of brightness, contrast and structure, compared with the traditional manual comparison, the stamp identification accuracy is improved, and the stamp identification method and device can be widely applied to the technical field of stamp identification.
Description
Technical Field
The invention relates to the technical field of stamp identification, in particular to a stamp identification method, a stamp identification system, a stamp identification device and a storage medium.
Background
Postage stamps are postage vouchers for delivery of post stamps and are typically issued by the authorized countries. The square inch space of the stamp usually reflects the characteristics of history, science and technology, economy, culture, geomantic-omen mood, natural style and the like of a country or a region, so that the stamp has collection value besides postal value. The hobby for collecting stamps is stamp collecting. From the collection and research point of view, the stamp has special values such as historical value, cultural relic value, artistic value, research value, appreciation value and the like, so the value of the stamp is not limited by the denomination amount.
Stamps are increasing in value as the ages and collections are decreasing. Therefore, the anti-counterfeiting and the identification of the stamp are very important. In the prior art, the identification is usually carried out by adopting a manual comparison method, so that the efficiency is low, the identification result is influenced by the individual subjective judgment of an identifier, and the accuracy is not high.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems existing in the prior art.
Therefore, an object of an embodiment of the present invention is to provide a stamp identification method, where the method obtains first image information and first description information of a stamp to be identified, matches and determines preset image information in a pre-established stamp image library, and determines similarity between the first image information and the preset image information through brightness contrast, contrast and structure contrast, so as to determine authenticity of the stamp to be identified.
It is a further object of embodiments of the present invention to provide a stamp identification system.
In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the invention comprises the following steps:
in a first aspect, an embodiment of the present invention provides a stamp identification method, including the following steps:
the method comprises the steps of obtaining first image information of the stamp to be identified, and obtaining first description information of the stamp to be identified according to the first image information;
determining preset image information in a pre-established stamp image library according to the first description information;
performing brightness contrast, contrast and structure contrast on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information;
and determining the authenticity of the stamp to be identified according to the similarity.
Further, in an embodiment of the present invention, the step of obtaining first image information of the stamp to be authenticated and obtaining first description information of the stamp to be authenticated according to the first image information specifically includes:
the method comprises the steps of obtaining an integral image of the stamp to be identified through shooting or scanning, and preprocessing the integral image to obtain first image information;
carrying out character area detection on the first image information, and determining a plurality of character areas;
cutting the character area to obtain a plurality of characters, and determining the arrangement sequence of the characters;
inputting the characters into a pre-trained character recognition model, and determining first description information of the stamp to be identified according to the recognition result of the character recognition model and the arrangement sequence of the characters.
Further, in an embodiment of the present invention, the step of preprocessing the whole image to obtain the first image information specifically includes:
carrying out contour recognition on the whole image by adopting an image recognition technology, and cutting the whole image according to a contour recognition result;
and angle correction is carried out on the whole cut image by utilizing Hough transform to obtain first image information.
Further, in an embodiment of the present invention, the stamp identification method further includes a step of creating a stamp image library, which specifically includes:
acquiring second description information and second image information of the stamp to be stored;
determining a key value pair according to the second description information and the second image information, and establishing a stamp image library according to the key value pair;
and the Key of the Key-value pair is the second description information, and the Va l ue of the Key-value pair is the second image information.
Further, in an embodiment of the present invention, the step of determining preset image information in a pre-established stamp image library according to the first description information includes:
and performing matching query on the first description information serving as Key in the stamp image library, and determining that the corresponding Va ue is preset image information.
Further, in an embodiment of the present invention, the step of performing brightness contrast, contrast and structure contrast on the first image information and the preset image information to obtain a similarity between the first image information and the preset image information specifically includes:
respectively calculating a first mean value, a first variance and a first covariance of the first image information and a second mean value, a second variance and a second covariance of the preset image information by adopting a Gaussian function;
comparing the brightness according to the first average value and the second average value to obtain a brightness comparison result;
performing contrast comparison according to the first variance and the second variance to obtain a contrast comparison result;
performing structure comparison according to the first covariance and the second covariance to obtain a structure comparison result;
and determining the similarity of the first image information and the preset image information according to the brightness contrast result, the contrast result and the structure contrast result.
Further, in an embodiment of the present invention, the step of determining whether the stamp to be authenticated is authentic according to the similarity includes:
when the similarity is larger than or equal to a preset similarity threshold, determining that the stamp to be identified is true;
or the like, or, alternatively,
and when the similarity is smaller than a preset similarity threshold value, acquiring the characteristic image information of the stamp to be identified by using a microscopic camera shooting technology, further performing characteristic comparison on the characteristic image information and the preset image information to obtain a plurality of difference areas, and outputting the difference areas.
In a second aspect, an embodiment of the present invention provides a stamp identification system, including:
the information acquisition module is used for acquiring first image information of the stamp to be identified and acquiring first description information of the stamp to be identified according to the first image information;
the preset image determining module is used for determining preset image information in a pre-established stamp image library according to the first description information;
the image comparison module is used for carrying out brightness comparison, contrast comparison and structure comparison on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information;
and the stamp authenticity determining module is used for determining the authenticity of the stamp to be identified according to the similarity.
In a third aspect, an embodiment of the present invention provides a stamp identification apparatus, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement one of the postage stamp authentication methods described above.
In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium, in which a processor-executable program is stored, the processor-executable program being configured to perform a stamp authentication method as described above when executed by a processor.
Advantages and benefits of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention:
the method and the device for identifying the stamp obtain first image information and first description information of the stamp to be identified, match and determine preset image information in a pre-established stamp image library, determine similarity of the first image information and the preset image information through brightness contrast, contrast and structure contrast, and further determine authenticity of the stamp to be identified. According to the stamp identification method and device, on one hand, the stamp identification efficiency is improved through matching of the preset image information without manual searching, on the other hand, the authenticity of the stamp to be identified is determined through triple comparison of brightness, contrast and structure, and compared with the traditional manual comparison, the stamp identification accuracy is improved.
Drawings
In order to more clearly illustrate the technical solution in the embodiment of the present invention, the following description is made on the drawings required to be used in the embodiment of the present invention, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solution of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart illustrating steps of a method for authenticating postage stamps according to an embodiment of the present invention;
FIG. 2 is a block diagram of a stamp identification system according to an embodiment of the present invention;
fig. 3 is a block diagram showing a configuration of a stamp authentication apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
In the description of the present invention, the meaning of a plurality is two or more, if there is a description to the first and the second for the purpose of distinguishing technical features, it is not understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present invention provides a stamp identification method, including the following steps:
s101, obtaining first image information of the stamp to be identified, and obtaining first description information of the stamp to be identified according to the first image information;
specifically, the first image information is a stamp pattern of the stamp, and can be obtained by means of shooting, scanning and the like, and the first description information includes stamp number, edition number, sheet number, color code, designer, printing factory name and other information of the stamp, and is generally displayed on the stamp face. The method and the device for identifying the stamp information acquire the first image information of the stamp to be identified, and then perform character recognition on the first image information to acquire the first description information. Step S101 specifically includes the following steps:
s1011, obtaining an overall image of the stamp to be identified through shooting or scanning, and preprocessing the overall image to obtain first image information;
s1012, carrying out character region detection on the first image information, and determining a plurality of character regions;
s1013, cutting the character area to obtain a plurality of characters, and determining the arrangement sequence of the characters;
s1014, inputting the characters into a pre-trained character recognition model, and determining first description information of the stamp to be identified according to the recognition result of the character recognition model and the arrangement sequence of the characters.
Specifically, the embodiment of the invention firstly obtains the whole image of the stamp to be identified, obtains the first image information through preprocessing, then utilizes the image recognition technology to detect the character area, determines a plurality of character areas containing description information, cuts the character areas to obtain the arrangement sequence of the characters and the characters, and then identifies the characters through the character recognition model so as to combine to obtain the first description information of the stamp to be identified.
According to the stamp identification method and device, the first description information is determined through character cutting and character identification, manual acquisition is not needed, accuracy of the first description information and acquisition efficiency are improved, and therefore efficiency and accuracy of stamp identification are improved.
As a further optional implementation manner, the step of preprocessing the whole image to obtain the first image information specifically includes the following steps:
a1, performing contour recognition on the whole image by adopting an image recognition technology, and cutting the whole image according to the result of the contour recognition;
and A2, performing angle correction on the clipped whole image by using Hough transform to obtain first image information.
Specifically, since the entire image obtained by shooting and scanning may contain unnecessary borders and other noise information, it is necessary to obtain the first image information through processes such as contour recognition and angle correction. According to the embodiment of the invention, the first image information is obtained through the contour recognition and the angle correction, so that the first description information can be conveniently obtained through the first image information subsequently, and the subsequent comparison can be conveniently carried out.
S102, determining preset image information in a pre-established stamp image library according to the first description information;
specifically, the stamp image library is a collection of image information shot before the stamp is issued, the image information shot before each stamp is issued is stored in the stamp image library, and the description information of the stamp is determined during production printing and is not acquired through image recognition.
As a further optional implementation manner, the stamp identification method further includes a step of creating a stamp image library, which specifically includes:
b1, acquiring second description information and second image information of the stamps to be saved;
b2, determining a key value pair according to the second description information and the second image information, and establishing a stamp image library according to the key value pair;
and the Key of the Key-value pair is the second description information, and the Va l ue of the Key-value pair is the second image information.
Specifically, the stamp to be stored is the stamp to be stored in the stamp image library before being issued, in the embodiment of the invention, the second description information of the stamp to be stored is used as Key, the second image information of the stamp to be stored is used as Va l ue, the Key value pair to be stored is obtained, and the description information and the image information of the stamp to be stored are stored in the stamp image library in the form of the Key value pair, so that the corresponding image information can be matched and compared quickly according to the description information of the stamp to be identified.
As a further optional implementation manner, the step of determining preset image information in a pre-established stamp image library according to the first description information specifically includes:
and performing matching query on the first description information serving as a Key in the stamp image library, and determining that the corresponding Value is preset image information.
Specifically, the stamp image library of the embodiment of the invention stores the description information and the image information of the issued stamps, and the image information corresponding to the stamps to be identified can be quickly found out through the matching query of the key value pairs.
S103, carrying out brightness contrast, contrast and structure contrast on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information;
specifically, the conventional comparison method judges whether the image information of the stamp to be identified is consistent with the image information of the reserved stamp through manual comparison. Step S103 specifically includes the following steps:
s1031, respectively calculating a first mean value, a first variance and a first covariance of the first image information and a second mean value, a second variance and a second covariance of the preset image information by adopting a Gaussian function;
s1032, comparing the brightness according to the first average value and the second average value to obtain a brightness comparison result;
s1033, carrying out contrast comparison according to the first variance and the second variance to obtain a contrast comparison result;
s1034, performing structure comparison according to the first covariance and the second covariance to obtain a structure comparison result;
and S1035, determining the similarity between the first image information and the preset image information according to the brightness contrast result, the contrast result and the structure contrast result.
Specifically, the brightness contrast result can be expressed as
The contrast ratio result can be expressed as
The structural comparison result can be expressed as
Where l (a, C) denotes a luminance contrast result, C (a, C) denotes a contrast result, s (a, C) denotes a structural contrast result, μ a denotes a first mean value of the first image information, μ C denotes a second mean value of the preset image information, σ a denotes a first variance of the first image information, σ C denotes a second variance of the preset image information, σ a denotes a first covariance of the first image information, σ C denotes a second covariance of the preset image information, and K1, K2, and K3 are constants.
The degree of similarity may be expressed as F (a, C) ═ l (a, C)]α[c(A,C)]β[s(A,C)]γ；
Where F (a, C) represents the similarity, and α, β, and γ represent the importance parameters of brightness, contrast, and structure, respectively.
And S104, determining the authenticity of the stamp to be identified according to the similarity.
Specifically, a similarity threshold may be preset, and when the similarity obtained in step S103 is greater than the preset similarity threshold, it may be determined that the stamp to be authenticated is true. It can be understood that different similarity threshold values can be set for stamps with different circulation years because the stamps are more or less worn in the collection process, and then the distribution year of the stamps to be identified can be obtained according to the first description information so as to calculate the circulation year of the stamps, and then the corresponding similarity threshold value is selected as the judgment basis. Step S104 specifically includes the following steps:
s1041, when the similarity is larger than or equal to a preset similarity threshold, determining that the stamp to be identified is true;
or the like, or, alternatively,
s1042, when the similarity is smaller than a preset similarity threshold, obtaining the characteristic image information of the stamp to be identified by using a microscopic imaging technology, further performing characteristic comparison on the characteristic image information and the preset image information to obtain a plurality of difference areas, and outputting the difference areas.
Specifically, when the similarity is smaller than a preset similarity threshold, a high-definition image of each characteristic area of the stamp to be identified can be further acquired through a microscopic camera shooting technology, and then characteristic comparison is performed between the high-definition image and preset image information to obtain a plurality of difference areas. After the difference area is output, a manual judgment method can be further adopted for comparison judgment, and an identification result can also be output to a user.
The method and the device for identifying the stamp obtain first image information and first description information of the stamp to be identified, match and determine preset image information in a pre-established stamp image library, determine similarity of the first image information and the preset image information through brightness contrast, contrast and structure contrast, and further determine authenticity of the stamp to be identified. On one hand, the stamp identification efficiency is improved by matching the preset image information without manual searching, on the other hand, the authenticity of the stamp to be identified is determined by triple comparison of brightness, contrast and structure, and compared with the traditional manual comparison, the stamp identification accuracy is improved; the embodiment of the invention adopts a key value pair storage mode to construct the stamp image library, thereby further improving the efficiency and the accuracy of stamp identification.
Referring to fig. 2, an embodiment of the present invention provides a stamp identification system, including:
the information acquisition module is used for acquiring first image information of the stamp to be identified and acquiring first description information of the stamp to be identified according to the first image information;
the preset image determining module is used for determining preset image information in a pre-established stamp image library according to the first description information;
the image comparison module is used for carrying out brightness comparison, contrast comparison and structure comparison on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information;
and the stamp authenticity determining module is used for determining the authenticity of the stamp to be identified according to the similarity.
The contents in the above method embodiments are all applicable to the present system embodiment, the functions specifically implemented by the present system embodiment are the same as those in the above method embodiment, and the beneficial effects achieved by the present system embodiment are also the same as those achieved by the above method embodiment.
Referring to fig. 3, an embodiment of the present invention provides a stamp identification apparatus, including:
at least one processor;
at least one memory for storing at least one program;
the at least one program, when executed by the at least one processor, causes the at least one processor to implement a method of postage stamp authentication as described above.
The contents in the above method embodiments are all applicable to the present apparatus embodiment, the functions specifically implemented by the present apparatus embodiment are the same as those in the above method embodiments, and the advantageous effects achieved by the present apparatus embodiment are also the same as those achieved by the above method embodiments.
Embodiments of the present invention also provide a computer-readable storage medium in which a processor-executable program is stored, which, when executed by a processor, is configured to perform a stamp authentication method as described above.
The computer-readable storage medium of the embodiment of the invention can execute the stamp identification method provided by the embodiment of the method of the invention, can execute any combination of the implementation steps of the embodiment of the method, and has corresponding functions and beneficial effects of the method.
The embodiment of the invention also discloses a computer program product or a computer program, which comprises computer instructions, and the computer instructions are stored in a computer readable storage medium. The computer instructions may be read by a processor of a computer device from a computer-readable storage medium, and executed by the processor to cause the computer device to perform the method illustrated in fig. 1.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the above-described functions and/or features may be integrated in a single physical device and/or software module, or one or more of the functions and/or features may be implemented in a separate physical device or software module. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The above functions, if implemented in the form of software functional units and sold or used as a separate product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Further, the computer readable medium could even be paper or another suitable medium upon which the above described program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the foregoing description of the specification, reference to the description of "one embodiment/example," "another embodiment/example," or "certain embodiments/examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method of authenticating a postage stamp, comprising the steps of:
the method comprises the steps of obtaining first image information of the stamp to be identified, and obtaining first description information of the stamp to be identified according to the first image information;
determining preset image information in a pre-established stamp image library according to the first description information;
performing brightness contrast, contrast and structure contrast on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information;
and determining the authenticity of the stamp to be identified according to the similarity.
2. A stamp identification method according to claim 1, wherein the step of obtaining first image information of the stamp to be identified and obtaining first description information of the stamp to be identified based on the first image information comprises:
the method comprises the steps of obtaining an integral image of the stamp to be identified through shooting or scanning, and preprocessing the integral image to obtain first image information;
carrying out character area detection on the first image information, and determining a plurality of character areas;
cutting the character area to obtain a plurality of characters, and determining the arrangement sequence of the characters;
inputting the characters into a pre-trained character recognition model, and determining first description information of the stamp to be identified according to the recognition result of the character recognition model and the arrangement sequence of the characters.
3. A method of authenticating postage stamps as recited in claim 2 wherein said step of preprocessing said integral image to obtain first image information includes:
carrying out contour recognition on the whole image by adopting an image recognition technology, and cutting the whole image according to a contour recognition result;
and angle correction is carried out on the whole cut image by utilizing Hough transform to obtain first image information.
4. A stamp identification method according to claim 1, characterized in that it further comprises the step of creating a library of stamp images, which in particular comprises:
acquiring second description information and second image information of the stamp to be stored;
determining a key value pair according to the second description information and the second image information, and establishing a stamp image library according to the key value pair;
and the Key of the Key-Value pair is the second description information, and the Value of the Key-Value pair is the second image information.
5. A stamp identification method according to claim 4, characterized in that the step of determining predetermined image information in a pre-established stamp image library on the basis of the first description information comprises:
and performing matching query on the first description information serving as a Key in the stamp image library, and determining that the corresponding Value is preset image information.
6. The method of claim 1, wherein the step of comparing the first image information with the predetermined image information to obtain a similarity between the first image information and the predetermined image information comprises:
respectively calculating a first mean value, a first variance and a first covariance of the first image information and a second mean value, a second variance and a second covariance of the preset image information by adopting a Gaussian function;
comparing the brightness according to the first average value and the second average value to obtain a brightness comparison result;
performing contrast comparison according to the first variance and the second variance to obtain a contrast comparison result;
performing structure comparison according to the first covariance and the second covariance to obtain a structure comparison result;
and determining the similarity of the first image information and the preset image information according to the brightness contrast result, the contrast result and the structure contrast result.
7. A stamp identification method according to any one of claims 1-6, characterized in that the step of determining the authenticity of the stamp to be identified on the basis of the similarity comprises:
when the similarity is larger than or equal to a preset similarity threshold, determining that the stamp to be identified is true;
or the like, or, alternatively,
and when the similarity is smaller than a preset similarity threshold value, acquiring the characteristic image information of the stamp to be identified by using a microscopic camera shooting technology, further performing characteristic comparison on the characteristic image information and the preset image information to obtain a plurality of difference areas, and outputting the difference areas.
8. A stamp identification system, comprising:
the information acquisition module is used for acquiring first image information of the stamp to be identified and acquiring first description information of the stamp to be identified according to the first image information;
the preset image determining module is used for determining preset image information in a pre-established stamp image library according to the first description information;
the image comparison module is used for carrying out brightness comparison, contrast comparison and structure comparison on the first image information and the preset image information to obtain the similarity of the first image information and the preset image information;
and the stamp authenticity determining module is used for determining the authenticity of the stamp to be identified according to the similarity.
9. A stamp identification apparatus, comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement a method of postage stamp authentication as claimed in any one of claims 1 to 7.
10. A computer-readable storage medium, in which a processor-executable program is stored, which, when being executed by a processor, is adapted to carry out a method of stamp authentication according to any one of claims 1 to 7.
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