WO2020042754A1 - Method and apparatus for verifying holographic anti-counterfeiting code - Google Patents

Abstract

A method and apparatus for verifying a holographic anti-counterfeiting code. The method for verifying a holographic anti-counterfeiting code comprises: acquiring a video stream containing a holographic anti-counterfeiting code at different projection angles (S101); extracting the projection angles and image features of the holographic anti-counterfeiting code in each frame among one or more frames of the video stream (S102); matching the projection angles and image features of the holographic anti-counterfeiting code in each frame in a pre-stored mapping table so as to obtain the matching rate of the holographic anti-counterfeiting code in each frame (S103), wherein the mapping relationship between different projection angles and image features of a sample holographic anti-counterfeiting code is stored in the mapping table; according to the matching rate of the holographic anti-counterfeiting code in each frame, determining whether the holographic anti-counterfeiting code is successfully verified (S104).

Description

Method and device for verifying holographic anti-counterfeit code Technical field

The present disclosure belongs to the technical field of anti-counterfeiting codes, and in particular relates to a holographic anti-counterfeiting code verification method and device.

Background technique

Holographic anti-counterfeiting technology is a new type of anti-counterfeiting technology developed by the application of laser anti-counterfeiting technology. It is also called laser holographic anti-counterfeiting. Labels made using holographic anti-counterfeiting technology contain more information and therefore have a deeper level of anti-counterfeiting effect than ordinary laser anti-counterfeiting labels. Holographic images are highly technical due to the latest achievements in the fields of laser, precision mechanics and physical chemistry. For most small batch counterfeiters, it is difficult to master the full set of manufacturing technology and the purchase of manufacturing equipment.

"Hologram" means "all information", that is, compared with ordinary photography, which only records the light and dark changes of objects, laser holography can also record the spatial changes of objects. Observing the holographic anti-counterfeiting code at different angles will show different images, such as multi-channel holographic anti-counterfeiting technology: When the logo is rotated, the multi-channel holographic anti-counterfeiting will see different patterns on the same position of the logo; 360 ° computer dot matrix Holographic technology: 360 ° computer dot-matrix holographic technology will show the combination and transformation of light spots such as radial, ring, and spiral within the 360 ° viewing range of the image, which is highly dynamic; dynamic coding anti-counterfeiting technology: dynamic coding anti-counterfeiting is a trademark In front of you, turning the logo slowly will cause a continuous motion pattern.

Summary of the Invention

A brief overview of the disclosure is given below in order to provide a basic understanding of some aspects of the disclosure. It should be understood, however, that this summary is not an exhaustive overview of the present disclosure. It is not intended to identify key or important parts of the disclosure, nor is it intended to limit the scope of the disclosure. Its purpose is merely to present some concepts of the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

According to an aspect of the present disclosure, a holographic anti-counterfeiting code verification method is provided, the method includes:

Obtain video streams with holographic anti-counterfeit codes at different projection angles;

Extracting a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

Matching the projection angle of the holographic anti-counterfeiting code and the image characteristics in each frame in a pre-stored mapping table to obtain a matching rate of the holographic anti-counterfeiting code in each frame, wherein the mapping table The mapping relationship between different projection angles and image features of the sample holographic anti-counterfeit code is stored in the sample;

Determining whether the verification of the holographic security code is successful according to the matching rate of the holographic security code in each frame.

According to another aspect of the present disclosure, a holographic anti-counterfeit code verification device is provided, the device includes:

A first acquisition module configured to acquire video streams with holographic anti-counterfeit codes at different projection angles;

A first extraction module configured to extract a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

A matching module configured to match a projection angle and an image feature of the holographic security code in each frame in a pre-stored mapping table to obtain a matching rate of the holographic security code in each frame, The mapping table stores mapping relationships between different projection angles and image features of the sample holographic anti-counterfeiting code;

A first determination module is configured to determine whether the holographic security code is successfully verified according to a matching rate of the holographic security code in each frame.

According to yet another aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program, which when executed by a processor, causes the processor to perform the following processing:

Obtain video streams with holographic anti-counterfeit codes at different projection angles;

Extracting a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

Matching the projection angle of the holographic anti-counterfeiting code and the image characteristics in each frame in a pre-stored mapping table to obtain a matching rate of the holographic anti-counterfeiting code in each frame, wherein the mapping table The mapping relationship between different projection angles and image features of the sample holographic anti-counterfeit code is stored in the sample;

Determining whether the verification of the holographic security code is successful according to the matching rate of the holographic security code in each frame.

According to one or more embodiments of the present disclosure, a low-cost, high-efficiency, automated holographic anti-counterfeit code verification can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present disclosure more clearly, the drawings used in the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are just some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without paying creative labor.

FIG. 1 schematically illustrates a flowchart of a holographic security code verification method according to an embodiment of the present disclosure;

2 schematically illustrates a flowchart of a holographic anti-counterfeiting code verification method according to another embodiment of the present disclosure;

3 schematically illustrates a flowchart of a holographic anti-counterfeiting code verification method according to another embodiment of the present disclosure;

4 schematically illustrates a configuration block diagram of a holographic anti-counterfeit code verification device according to another embodiment of the present disclosure;

FIG. 5 schematically illustrates a configuration of a computing device according to an embodiment of the present disclosure.

detailed description

In order to make the objectives, technical solutions, and advantages of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be described clearly and completely in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are merely Some, but not all, embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person having ordinary skill in the art without making creative efforts fall within the protection scope of the present disclosure.

Regarding the verification of the holographic anti-counterfeiting code, the inventor knows that the verification is performed manually. Such manual verification requires that the verification personnel have professional anti-counterfeiting knowledge, and need to use professional verification equipment for verification. The manual verification method has higher verification cost and lower efficiency. The present disclosure provides a holographic anti-counterfeiting code verification method and device, which can implement low-cost and high-efficiency automated holographic anti-counterfeiting code verification.

Before the technical solutions in the embodiments of the present disclosure are further described in detail, first, the main body of the technical solutions of the present disclosure will be described. The execution subject of the technical solution of the present disclosure may be, for example, a mobile terminal such as a computer, an iPad, or a mobile phone, or an electronic device such as a dedicated device for holographic anti-counterfeit code verification.

The following describes a holographic anti-counterfeiting code verification method and device according to the present disclosure with reference to FIGS. 1 to 5.

FIG. 1 schematically illustrates a flowchart of a holographic anti-counterfeiting code verification method according to an embodiment of the present disclosure.

As shown in FIG. 1, in step S101, video streams with holographic anti-counterfeiting codes at different projection angles are obtained.

The holographic anti-counterfeiting code can be set in a local area on the anti-counterfeiting label, and the anti-counterfeiting label is a carrier of the holographic anti-counterfeiting code. In addition, the security label can also include information other than the holographic security code.

In some embodiments, an image acquisition device may be used to perform video stream data collection on the holographic security code in advance. The image acquisition device may be, for example, a camera installed on a mobile terminal such as a computer, an iPad, or a mobile phone, or an electronic device such as a dedicated device for holographic anti-counterfeit code verification. In addition, the image acquisition device may also be a device separate from the above-mentioned electronic device. After the video stream is collected, the image acquisition device inputs the video stream to the electronic device. The embodiment of the present disclosure does not limit the specific input process.

In some embodiments, the shooting angle may be changed during the process of capturing the video stream to obtain a video stream with holographic anti-counterfeit codes at different projection angles. In some embodiments, the shooting angle may be transformed according to a preset angle transformation value. The preset angle transformation value may be an angle range value, or a plurality of discrete angle values. In addition, other angle transformation values may be set according to actual needs.

In some embodiments, video streams with holographic anti-counterfeit codes at different projection angles may be pre-recorded using an image acquisition device, or may be acquired in real time by an image acquisition device. The video stream data of the holographic anti-counterfeiting code may include continuous multi-frame images.

The projection angle in this embodiment may be, for example, an angle formed between the holographic anti-counterfeiting code and the projection surface of the camera. Specifically, the angle formed by the connection between the center point of the holographic anti-counterfeiting code and the center point of the projection surface of the camera and the projection surface of the camera. The orthographic projection angle may correspond to an angle at which the holographic security code on the security label is photographed from directly above.

In step S102, the projection angle and image feature of the holographic security code in each frame of one or more frames of the video stream are extracted.

In some embodiments, the image features of the holographic anti-counterfeit code can be extracted by computer vision. For example, feature extraction algorithms such as orb, surf, or sift can be used. The embodiment of the present disclosure does not limit the specific extraction process.

In some embodiments, the one or more frames extracted from the video stream may be continuous frames or discrete frames arranged in chronological order.

In some embodiments, extracting a projection angle of the holographic security code in each frame of one or more frames of the video stream may include: extracting image characteristics of the holographic security code extracted from each frame and pre-stored security code image characteristics Perform a comparison, generate a transformation matrix, and calculate the projection angle of the holographic security code in each frame. In some embodiments, the pre-stored anti-counterfeit code image features may be obtained by performing feature extraction on an orthographic image obtained by photographing a sample holographic anti-counterfeit code at an orthographic projection angle in advance.

In some embodiments, the orthographic image features may be stored in a pre-built mapping table corresponding to the orthographic angle.

Optionally, before step S102, the method provided by the embodiment of the present disclosure may further include:

Each frame of one or more frames of the video stream is pre-processed. The pre-processing may include operations such as truncation thresholding processing, contrast enhancement processing, and image denoising processing.

In this embodiment, by pre-processing each frame of one or more frames of the video stream, it is possible to eliminate noise that may exist in the video frames, restore useful and real information, and enhance the detectability and maximum of related information. Simplify the required image, thereby increasing the reliability of image feature extraction in step S102. Furthermore, it is possible to increase the matching reliability when matching the holographic anti-counterfeiting code as described in step S103 below.

In step S103, the projection angle and image characteristics of the holographic anti-counterfeit code in each frame are matched in a pre-stored mapping table to obtain the matching rate of the holographic anti-counterfeit code in each frame.

The mapping table stores a mapping relationship between different projection angles of the sample holographic anti-counterfeiting code and image characteristics of the sample holographic anti-counterfeiting code.

In some embodiments, for each frame of the holographic anti-counterfeit code, a mapping table is queried to see if there is the same projection angle as the projection angle of the holographic anti-counterfeit code. If it exists, the image characteristics and mapping table of the holographic anti-counterfeit code The image features corresponding to the middle projection angle are subjected to similarity calculation; the matching rate of the holographic anti-counterfeit code in each frame is determined according to the calculated similarity. Among them, methods such as Euclidean distance, horse distance, or cosine function can be used to calculate the similarity.

The embodiment of the present disclosure does not limit the specific matching process.

In step S104, it is determined whether the verification of the holographic security code is successful according to the matching rate of the holographic security code in each frame.

In some embodiments, the matching rates of all holographic anti-counterfeiting codes in the one or more frames of the video stream may be counted to determine whether the holographic anti-counterfeiting code is successfully verified. The statistical matching rate may be, for example, an average matching rate of the holographic anti-counterfeit code in the one or more frames, or may be a sum of the matching rates of the holographic anti-counterfeit code in each frame. In addition, other methods can also be used to calculate the matching rate.

In some embodiments, it can be determined whether the statistical result of the matching rate is greater than a preset threshold, and if it is greater than the preset threshold, it is judged that the holographic anti-counterfeit code verification is successful; otherwise, it is judged that the entire system anti-counterfeit code verification fails.

The preset threshold can be set according to actual needs. For example, a preset threshold is set to 0.8. When the statistical result of the matching rate is 0.6, it can be determined that the verification of the holographic anti-counterfeiting code fails.

In some embodiments, a verification result indicating whether the verification of the holographic anti-counterfeit code is successful may be generated and displayed to the user in the electronic device.

For example, the verification result can be output in text form on the screen of the electronic device, such as outputting the text content "verification successful" or "verification failed". In addition, it is also possible to indicate that the holographic anti-counterfeit code verification is successful by outputting the symbol identification “√”, to indicate that the holographic anti-counterfeit code verification failure is output, and so on.

In this embodiment, the projection angle and image characteristics of the holographic security code in the video stream are matched in a pre-stored mapping table, and according to the matching rate of the holographic security code, it is determined whether the holographic security code is successfully verified and the accuracy is achieved. The purpose of performing holographic anti-counterfeit code verification is to achieve the technical effect of automatic verification with low cost and high efficiency of holographic anti-counterfeit code verification.

FIG. 2 schematically illustrates a flowchart of a holographic security code verification method according to another embodiment of the present disclosure. In this embodiment, the holographic anti-counterfeit code verification method includes steps S201 to S203 in addition to the steps described in FIG. 1. For brevity of description, the steps described in FIG. 1 are omitted.

Steps S201 to S203 are steps for constructing a mapping table, and may be performed before step S103 described in FIG. 1, for example.

As shown in FIG. 2, in step S201, a plurality of sample images of the sample holographic anti-counterfeit code at different projection angles are acquired.

The different projection angles may include an orthographic projection angle, and the orthographic projection angle corresponds to the orthographic image.

In some embodiments, the sample holographic anti-counterfeit code can be photographed at different projection angles to obtain multiple sample images of the sample holographic anti-counterfeit code at different projection angles. The camera can be used to photograph the sample holographic anti-counterfeiting code. In addition, the sample holographic anti-counterfeiting code can be photographed by using an image acquisition device separate from the electronic device, and then multiple sample images of the sample holographic anti-counterfeiting code at different projection angles are input into the electronic device. The embodiment of the present disclosure does not limit the specific input process.

In step S202, a plurality of sample image features corresponding to different projection angles are extracted from the plurality of sample images.

In some embodiments, the extraction of image features may be implemented by a method similar to the extraction of image features of the holographic security code described in step S102. For example, computer vision can be used for feature extraction.

In step S203, a mapping table is constructed according to the correspondence between different projection angles and a plurality of sample image features. The mapping table may be stored in the electronic device for the matching process in step S103 described above.

In the embodiment of the present disclosure, a mapping table is constructed according to the corresponding relationship between different projection angles and the characteristics of multiple sample images, so that the change of the feature state of the security code with the projection angle is stored in the mapping table for subsequent use of the mapping table for Holographic security code check.

FIG. 3 schematically illustrates a flowchart of a holographic security code verification method according to another embodiment of the present disclosure. In this embodiment, the holographic anti-counterfeit code verification method includes steps S301 to S303 in addition to the steps described in FIG. 1. For brevity of description, the steps described in FIG. 1 are omitted.

Steps S301 to S303 shown in FIG. 3 are steps for determining the authenticity of the video stream, and may be performed before step S103 described in FIG. 1, for example.

As shown in FIG. 3, in step S301, image features of anti-counterfeit labels in multiple frames of a video stream are extracted. The security label includes a holographic security code.

In some embodiments, extracting the image features of the anti-counterfeit label may be implemented by using a method similar to that of extracting the image features of the holographic anti-counterfeit code described in step S102. For example, computer vision can be used for feature extraction.

In step S302, the image features of the anti-counterfeit label in each of the multiple frames are compared with the image features of the sample holographic anti-counterfeit code stored in the mapping table to determine whether the holographic anti-counterfeit code in each of the multiple frames is Location on security label.

In some embodiments, it may be determined that the holographic anti-counterfeiting code is located at a lower left position, a central position, a lower right position, or the like of the anti-counterfeiting label.

In step S303, the authenticity of the video stream is determined according to changes in the position of the holographic anti-counterfeit code on the anti-counterfeit label in a plurality of frames.

In some embodiments, the location may include coordinate information. The position vector of the holographic anti-counterfeiting code can be calculated according to the coordinate information of the holographic anti-counterfeiting code; the position vector of the holographic anti-counterfeiting code in each frame of multiple frames and the order of each frame in the video stream are used to determine the holographic anti-counterfeiting in the video stream The position of the code changes.

In some embodiments, it can be determined whether there is a sudden change in the position of the holographic security code on the security label. If there is a mutation, it is determined that the video stream is fake; if there is no mutation, it is determined that the video stream is real.

In this embodiment, the authenticity of the video stream is determined by changing the position of the holographic anti-counterfeit code on the anti-counterfeit label in the video stream. If the position change in the video stream is smooth and smooth, the video stream can be determined to be true. For example, if the position of two consecutive frames changes greatly, it can be determined that the video stream is forged. The embodiment of the present disclosure does not limit the specific determination process.

It should be noted that steps S301 to S303 may be performed before step S102, or may be performed after step S102, or may be performed simultaneously with step S102, which is not limited in the embodiment of the present disclosure.

In the embodiment of the present disclosure, the authenticity of the video stream is determined. When it is determined that the video stream is false, the matching process in the subsequent step S103 need not be performed, thereby further improving the verification efficiency of the holographic anti-counterfeiting code.

FIG. 4 schematically illustrates a configuration block diagram of a holographic anti-counterfeit code verification device according to another embodiment of the present disclosure.

In some embodiments, the apparatus 4000 may include a processing circuit 4010. The processing circuit 4010 of the device 4000 provides various functions of the device 4000. In some embodiments, the processing circuit 4010 of the device 4000 may be configured to perform the holographic security code verification method described above with reference to FIG. 1.

The processing circuit 4010 may refer to various implementations of a digital circuit system, an analog circuit system, or a mixed signal (combination of analog and digital) circuit system that performs functions in a computing system. The processing circuit may include, for example, a circuit such as an integrated circuit (IC), an application specific integrated circuit (ASIC), a portion or circuit of a separate processor core, the entire processor core, a separate processor, such as a field programmable gate array (FPGA) Programmable hardware devices, and / or systems including multiple processors.

In some embodiments, the processing circuit 4010 may include a first acquisition module 4020, a first extraction module 4030, a matching module 4040, and a first determination module 4050.

The first obtaining module 4020 is configured to obtain a video stream having a holographic anti-counterfeiting code at different projection angles; the first obtaining module 4030 is configured to extract the holographic anti-counterfeiting in each frame of one or more frames of the video stream Code projection angle and image feature; the matching module 4040 is configured to match the projection angle and image feature of the holographic security code in each frame in a pre-stored mapping table to obtain the The matching rate of the holographic anti-counterfeiting code is described, wherein the mapping table stores a mapping relationship between different projection angles and image features of the sample holographic anti-counterfeiting code; the first determination module 4050 is configured to perform The matching rate of the holographic security code determines whether the holographic security code is successfully verified. The above modules 4020 to 4050 may be respectively configured to perform steps S101 to S104 in the holographic anti-counterfeit code verification method shown in FIG. 1.

In some embodiments, the apparatus 4000 may further include a memory (not shown). The memory of the device 4000 may store information generated by the processing circuit 4010 and programs and data for the operation of the device 4000. The memory may be a volatile memory and / or a non-volatile memory. For example, the memory may include, but is not limited to, random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), read-only memory (ROM), and flash memory. In addition, the apparatus 4000 may be implemented at a chip level, or may be implemented at a device level by including other external components.

It should be understood that each of the foregoing modules is only a logical module divided according to a specific function that it implements, and is not intended to limit a specific implementation manner. In actual implementation, the foregoing modules may be implemented as independent physical entities, or may be implemented by a single entity (for example, a processor (CPU or DSP, etc.), an integrated circuit, etc.).

In some embodiments, the apparatus 4000 may further include: a second acquisition module 4060 configured to extract a plurality of sample image features corresponding to the different projection angles from the plurality of sample images; a second extraction module 4070, Configured to extract a plurality of sample image features corresponding to the different projection angles from the plurality of sample images; a building module 4080 configured to configure a correspondence relationship between the different projection angles and the plurality of sample image features To build the mapping table. The above-mentioned modules 4060 to 4080 may be respectively configured to execute steps S201 to S203 in the holographic anti-counterfeit code verification method shown in FIG. 2.

In some embodiments, the device 4000 may further include: a third extraction module 4090 configured to calculate an average matching rate of the holographic anti-counterfeit code in the one or more frames; a comparison module 4100 configured to convert all The image features of the anti-counterfeit label in each of the multiple frames are compared with the image features of the sample holographic anti-counterfeit code stored in the mapping table to determine what is in each of the multiple frames. A position of the holographic security code on the security label; a second determination module 4110 configured to determine the video stream according to a change in the position of the holographic security code on the security label in the plurality of frames; Authenticity. The above-mentioned modules 4090 to 4110 may be respectively configured to perform steps S301 to S303 in the holographic anti-counterfeit code verification method shown in FIG. 3 described above.

According to the holographic anti-counterfeit code verification device of the present disclosure, it is possible to realize a low-cost and high-efficiency automated holographic anti-counterfeit code verification.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the devices and modules described above may refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.

It should be noted that, when the holographic anti-counterfeit code verification device provided in the foregoing embodiment performs the holographic anti-counterfeit code verification method, only the above-mentioned division of functional modules is used as an example. In practical applications, the above functions may be allocated according to needs Completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the holographic anti-counterfeit code verification device provided by the foregoing embodiment belongs to the same concept as the holographic anti-counterfeit code verification method embodiment, and its specific implementation process is described in the method embodiment in detail, and is not repeated here.

FIG. 5 illustrates an exemplary configuration of a computing device 500 that can implement an embodiment of the present invention. The computing device 500 is an example of a hardware device to which the above-mentioned aspects of the present invention can be applied. Computing device 500 may be any machine configured to perform processes and / or calculations. The computing device 500 may be, but is not limited to, a workstation, a server, a desktop computer, a laptop computer, a tablet computer, a personal data assistant (PDA), a smart phone, an on-board computer, or a combination thereof.

As shown in FIG. 5, the computing device 500 may include one or more elements that may be connected or communicated with the bus 502 via one or more interfaces. The bus 502 may include, but is not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MCA) bus, an Enhanced ISA (EISA) bus, a Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus, etc. Computing device 500 may include, for example, one or more processors 504, one or more input devices 506, and one or more output devices 508. The one or more processors 504 may be any kind of processor, and may include, but are not limited to, one or more general-purpose processors or special-purpose processors (such as special-purpose processing chips). The processor 504 may, for example, correspond to the processing circuit 4010 in FIG. 4 and is configured to implement the functions of each module of the holographic anti-counterfeit code verification device of the present disclosure. The input device 506 may be any type of input device capable of inputting information to a computing device, and may include, but is not limited to, a mouse, a keyboard, a touch screen, a microphone, and / or a remote controller. The output device 508 may be any type of device capable of presenting information, and may include, but is not limited to, a display, a speaker, a video / audio output terminal, a vibrator, and / or a printer.

The computing device 500 may also include or be connected to a non-transitory storage device 514, which may be any non-transitory storage device that can implement data storage, and may include, but is not limited to, a disk drive, optical Data can be read from storage devices, solid-state memories, floppy disks, flexible disks, hard disks, magnetic tapes or any other magnetic media, compact disks or any other optical media, cache memory and / or any other memory chips or modules, and / or computers , Instructions, and / or any other medium of code. The computing device 500 may also include a random access memory (RAM) 510 and a read-only memory (ROM) 512. The ROM 512 may store programs, utilities, or processes to be executed in a non-volatile manner. The RAM 510 may provide volatile data storage and store instructions related to the operation of the computing device 500. The computing device 500 may also include a network / bus interface 516 coupled to the data link 518. The network / bus interface 516 may be any kind of device or system capable of enabling communication with external devices and / or networks, and may include, but is not limited to, a modem, a network card, an infrared communication device, a wireless communication device, and / or a chipset (such as Bluetooth ^™ devices, 802.11 devices, WiFi devices, WiMax devices, cellular communication facilities, etc.).

In addition, one or more embodiments of the present disclosure may be implemented as follows.

Solution 1: a holographic anti-counterfeiting code verification device, including:

One or more processors;

A memory having computer-executable instructions stored thereon, which, when executed by the one or more processors, cause the one or more processors:

Obtain video streams with holographic anti-counterfeit codes at different projection angles;

Extracting a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

Matching the projection angle of the holographic anti-counterfeiting code and the image characteristics in each frame in a pre-stored mapping table to obtain a matching rate of the holographic anti-counterfeiting code in each frame, wherein the mapping table The mapping relationship between different projection angles and image features of the sample holographic anti-counterfeit code is stored in the sample;

Determining whether the verification of the holographic security code is successful according to the matching rate of the holographic security code in each frame.

Solution 2: In the holographic anti-counterfeit code verification device of Solution 1, the computer-executable instructions, when executed by the one or more processors, cause the one or more processors to:

Obtaining multiple sample images of the sample holographic anti-counterfeit code at different projection angles;

Extracting a plurality of sample image features corresponding to the different projection angles from the plurality of sample images;

Constructing the mapping table according to the correspondence between the different projection angles and the features of the plurality of sample images.

Solution 3: In the holographic anti-counterfeit code verification device of item 1, determining whether the holographic anti-counterfeit code is successfully verified according to the matching rate of the holographic anti-counterfeit code in each frame includes:

Calculating an average matching rate of the holographic security code in the one or more frames;

The average matching rate is compared with a preset threshold to determine whether the holographic anti-counterfeit code is successfully verified.

Solution 4: In the holographic anti-counterfeit code verification device of the first solution, the video stream is obtained by shooting the holographic anti-counterfeit code by using a preset angle conversion value to change the shooting angle.

Solution 5: In the holographic anti-counterfeit code verification device of any one of Solutions 1 to 4, the computer-executable instructions, when executed by the one or more processors, cause the one or more processors:

Extracting image features of a security label in multiple frames of the video stream, wherein the security label includes the holographic security code;

Comparing the image feature of the security label in each of the multiple frames with the image feature of the sample holographic security code stored in the mapping table to determine each frame of the multiple frames The position of the holographic anti-counterfeit code on the anti-counterfeit label;

Determine the authenticity of the video stream according to a change in the position of the holographic anti-counterfeit code on the anti-counterfeit label in the multiple frames.

Scheme 6: In the holographic anti-counterfeit code checking device of the fifth scheme, the authenticity of the video stream is determined according to whether the positions of the holographic anti-counterfeit codes on the anti-counterfeit labels in the multiple frames are abruptly changed.

All the above-mentioned optional technical solutions may be used in any combination to form optional embodiments of the present disclosure, which will not be described in detail here. In the several embodiments provided by the present disclosure, it should be understood that the disclosed methods and devices may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, there may be another division manner. For example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.

It should be noted that, in the description of the present disclosure, the terms “first”, “second”, and the like are used for descriptive purposes only, and cannot be understood to indicate or imply relative importance. In addition, in the description of the present disclosure, unless otherwise stated, "a plurality" means two or more.

Various aspects, implementations, implementations, or features of the foregoing embodiments may be used individually or in any combination. Various aspects of the foregoing embodiments may be implemented by software, hardware, or a combination of hardware and software.

For example, the foregoing embodiments may be embodied as computer-readable codes on a computer-readable medium. A computer-readable medium is any data storage device that can store data, which can thereafter be read by a computer system. Examples of computer-readable media include read-only memory, random-access memory, CD-ROMs, DVDs, magnetic tapes, hard drives, solid-state drives, and optical data storage devices. The computer-readable medium may also be distributed among network-coupled computer systems such that the computer-readable code is stored and executed in a distributed manner.

For example, the foregoing embodiments may take the form of a hardware circuit. Hardware circuits may include combined logic circuits, clock storage devices (such as floppy disks, flip-flops, latches, etc.), finite state machines, memories such as static random access memory or embedded dynamic random access memory, custom-designed circuits, Any combination of programmable logic arrays.

The above are merely preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modification, equivalent replacement, or improvement made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. Within range.

Claims (13)

1. A method for verifying a holographic anti-counterfeit code, wherein the method includes:

   Obtain video streams with holographic anti-counterfeit codes at different projection angles;

   Extracting a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

   Matching the projection angle of the holographic anti-counterfeiting code and the image characteristics in each frame in a pre-stored mapping table to obtain a matching rate of the holographic anti-counterfeiting code in each frame, wherein the mapping table The mapping relationship between different projection angles and image features of the sample holographic anti-counterfeit code is stored in the sample;

   Determining whether the verification of the holographic security code is successful according to the matching rate of the holographic security code in each frame.
2. The method according to claim 1, further comprising:

   Obtaining multiple sample images of the sample holographic anti-counterfeit code at different projection angles;

   Extracting a plurality of sample image features corresponding to the different projection angles from the plurality of sample images;

   Constructing the mapping table according to the correspondence between the different projection angles and the features of the plurality of sample images.
3. The method according to claim 1, wherein determining whether the holographic security code is successfully verified according to a matching rate of the holographic security code in each frame comprises:

   Calculating an average matching rate of the holographic security code in the one or more frames;

   The average matching rate is compared with a preset threshold to determine whether the holographic anti-counterfeit code is successfully verified.
4. The method according to claim 1, wherein the video stream is obtained by shooting the holographic anti-counterfeit code by changing a shooting angle with a preset angle transformation value.
5. The method according to any one of claims 1 to 4, further comprising:

   Extracting image features of a security label in multiple frames of the video stream, wherein the security label includes the holographic security code;

   Comparing the image feature of the security label in each of the multiple frames with the image feature of the sample holographic security code stored in the mapping table to determine each frame of the multiple frames The position of the holographic anti-counterfeit code on the anti-counterfeit label;

   Determine the authenticity of the video stream according to a change in the position of the holographic anti-counterfeit code on the anti-counterfeit label in the multiple frames.
6. The method according to claim 5, wherein the authenticity of the video stream is determined according to whether a sudden change occurs in the position of the holographic anti-counterfeit code on the anti-counterfeit label in the multiple frames.
7. A holographic anti-counterfeit code verification device, characterized in that the device includes:

   A first acquisition module configured to acquire video streams with holographic anti-counterfeit codes at different projection angles;

   A first extraction module configured to extract a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

   A matching module configured to match a projection angle and an image feature of the holographic security code in each frame in a pre-stored mapping table to obtain a matching rate of the holographic security code in each frame, The mapping table stores mapping relationships between different projection angles and image features of the sample holographic anti-counterfeiting code;

   A first determination module is configured to determine whether the holographic security code is successfully verified according to a matching rate of the holographic security code in each frame.
8. The apparatus according to claim 7, further comprising:

   A second acquisition module configured to acquire a plurality of sample images of the sample holographic anti-counterfeit code at different projection angles;

   A second extraction module configured to extract a plurality of sample image features corresponding to the different projection angles from the plurality of sample images;

   A construction module is configured to construct the mapping table according to a correspondence relationship between the different projection angles and the features of the plurality of sample images.
9. The apparatus according to claim 7, wherein the first determination module is configured to:

   Calculating an average matching rate of the holographic security code in the one or more frames;

   The average matching rate is compared with a preset threshold to determine whether the holographic anti-counterfeit code is successfully verified.
10. The device according to claim 7, wherein the video stream is obtained by shooting the holographic anti-counterfeit code by changing a shooting angle with a preset angle transformation value.
11. The device according to any one of claims 7 to 10, wherein the device further comprises:

    A third extraction module configured to calculate an average matching rate of the holographic security code in the one or more frames;

    The comparison module is configured to compare the image feature of the anti-counterfeit label in each of the multiple frames with the image feature of the sample holographic anti-counterfeit code stored in the mapping table to determine the The position of the holographic anti-counterfeit code on the anti-counterfeit label in each of a plurality of frames;

    A second determination module is configured to determine the authenticity of the video stream according to a change in the position of the holographic security code on the security label in the multiple frames.
12. The device according to claim 11, wherein the second determining module is configured to determine the position of the holographic anti-counterfeit code on the anti-counterfeit label according to whether a sudden change occurs in the plurality of frames, The authenticity of the video stream.
13. A computer-readable storage medium having stored thereon a computer program, characterized in that when the program is run by a processor, the processor causes the processor to perform the following processing:

    Obtain video streams with holographic anti-counterfeit codes at different projection angles;

    Extracting a projection angle and an image feature of the holographic security code in each frame of one or more frames of the video stream;

    Matching the projection angle of the holographic anti-counterfeiting code and the image characteristics in each frame in a pre-stored mapping table to obtain a matching rate of the holographic anti-counterfeiting code in each frame, wherein the mapping table The mapping relationship between different projection angles and image features of the sample holographic anti-counterfeit code is stored in the sample;

    Determining whether the verification of the holographic security code is successful according to the matching rate of the holographic security code in each frame.

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