WO2017219562A1

WO2017219562A1 - Method and apparatus for generating two-dimensional code

Info

Publication number: WO2017219562A1
Application number: PCT/CN2016/103091
Authority: WO
Inventors: 曾慧鹏
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-20
Filing date: 2016-10-24
Publication date: 2017-12-28
Also published as: CN107527083A

Abstract

A method and apparatus for generating a two-dimensional code. The method comprises: acquiring a first back image of a first terminal device (101); matching the first back image and a sample image in a pre-established sample library to obtain a first sample image matching the first back image (102); according to a correlation between the pre-established sample image and a uniform resource locator (URL), acquiring a first URL corresponding to the first sample image (103); and according to the first URL, generating a two-dimensional code corresponding to the first URL (104). By means of the method, the usage experience of a user is improved, and the problem of a certain inconvenience brought to a user due to the fact that an existing two-dimensional code generation method cannot automatically determine a two-dimensional code required by the user is solved.

Description

Method and device for generating two-dimensional code

Technical field

The present invention relates to the field of mobile communications, and in particular, to a method and an apparatus for generating a two-dimensional code.

Background technique

With the development of mobile communication technology, QR codes have been seen everywhere in people's lives. The two-dimensional code records the data symbol information by using a certain geometric pattern in a black and white pattern distributed in a plane according to a certain rule; in the coding, a plurality of geometric shapes corresponding to the binary are used to represent the numerical value information of the text. The image input device or the photoelectric scanning device automatically reads to realize automatic information processing.

Usually, a QR code corresponds to a Uniform Resource Locator (URL), which is the address of a standard resource on the Internet. It is a simple way to locate and access resources that can be obtained from the Internet. Said. If there are multiple URLs, multiple QR codes need to be generated for the user to select. Thus, for the same resource, the user needs subjective judgment to scan which QR code, and cannot automatically determine the QR code required by the user. Users bring some inconvenience and reduce the user experience. For example, when the user scans the QR code to download the application through the mobile terminal, the QR code of the application has been generated, and the user needs to determine which two-dimensional code to scan according to the operating system of the mobile terminal; once the scanning error occurs, If the problem cannot be downloaded or cannot be installed after downloading, the user needs to scan again. The operation process is cumbersome and is not conducive to improving the user experience.

Summary of the invention

The embodiment of the invention provides a method and a device for generating a two-dimensional code, which aims to solve the problem that the existing two-dimensional code generation method cannot automatically determine the two-dimensional code required by the user, which brings certain inconvenience to the user and reduces The problem of the user's experience.

In order to achieve the above object, an embodiment of the present invention provides a two-dimensional code generating method, and a packet include:

Obtaining a first back image of the first terminal device;

Matching the first back image with the sample image in the pre-established sample library to obtain a first sample image that matches the first back image;

Obtaining, according to a correspondence between the pre-established sample image and the uniform resource locator URL, a first URL corresponding to the first sample image;

A two-dimensional code corresponding to the first URL is generated according to the first URL.

Preferably, the step of matching the first back image with the sample image in the pre-established sample library to obtain the first sample image matching the first back image comprises:

Performing image processing on the first back image to obtain a binary image of the first back image;

The binary image is matched with the sample image in the pre-established sample library to obtain a first sample image that matches the binary image.

Preferably, the step of performing image processing on the first back image to obtain a binary image of the first back image comprises:

Performing image binarization processing and edge detection on the first back image to obtain an edge binary image of the first back image;

Performing a row and column scan on the edge binary image to determine a back region of the first terminal device;

The ruled area above the grip edge is taken from the back area, and the ruled area is determined to be a binary image of the first back image, and the grip edge is the edge of the grip area of the first terminal device held by the user.

Preferably, the step of acquiring the first back image of the first terminal device comprises:

When detecting that the first terminal device scans the two-dimensional code, the back of the first terminal device is photographed, and the captured first back image is acquired.

Preferably, the method further comprises:

Obtaining a second URL of the second terminal device and a second back image;

Performing image processing on the second back image to obtain a binary image of the second back image;

The binary image of the second back image is taken as a sample image and stored in the sample library corresponding to the second URL.

In order to achieve the above object, an embodiment of the present invention further provides a two-dimensional code generating apparatus, including:

a first acquiring module, configured to acquire a first back image of the first terminal device;

a matching module configured to match the first back image with the sample image in the pre-established sample library to obtain a first sample image that matches the first back image;

a second acquiring module, configured to acquire a first URL corresponding to the first sample image according to a correspondence between the pre-established sample image and the uniform resource locator URL;

And generating a module, configured to generate a two-dimensional code corresponding to the first URL according to the first URL.

Preferably, the matching module comprises:

An image processing sub-module configured to perform image processing on the first back image to obtain a binary image of the first back image;

The image matching sub-module is configured to match the binary image with the sample image in the pre-established sample library to obtain a first sample image that matches the binary image.

Preferably, the image processing sub-module comprises:

An edge detecting unit configured to perform image binarization processing and edge detection on the first back image to obtain an edge binary image of the first back image;

a row and column scanning unit configured to perform a row and column scan on the edge binary image to determine a back region of the first terminal device;

The area intercepting unit is configured to intercept the ruled area above the grip edge from the back area, and determine that the rule area is a binary image of the first back image, and the grip edge is an edge of the grip area of the first terminal device that the user holds.

Preferably, the first obtaining module comprises:

The photographing sub-module is configured to: when detecting that the first terminal device scans the two-dimensional code, take a photo of the back of the first terminal device, and acquire the captured first back image.

Preferably, the device further comprises:

a sample establishing module, configured to acquire a second URL of the second terminal device and a second back image;

In an embodiment of the present invention, a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the implementation of the two-dimensional code generation method in the above embodiment.

The above solution of the embodiment of the present invention at least includes the following beneficial effects:

The method and device for generating a two-dimensional code provided by the embodiment of the present invention obtains a back image of the terminal device and matches the sample image in the sample library, thereby obtaining a URL corresponding to the terminal device and automatically generating a two-dimensional code, when present When multiple QR codes are used, the user's terminal device can be accurately identified, and the user does not need to subjectively select which two-dimensional code to scan; and the back image is subjected to image processing to intercept the ruled area above the grip edge, and the accuracy is better. The invention improves the user experience and solves the problem that the existing two-dimensional code generation method cannot automatically determine the two-dimensional code required by the user, which brings a certain inconvenience to the user.

DRAWINGS

1 is a flow chart showing the basic steps of a method for generating a two-dimensional code according to a first embodiment of the present invention;

Figure 2 is a diagram showing a scenario of an example of the first embodiment of the present invention;

Figure 3 is a block diagram showing a two-dimensional code generating apparatus according to a second embodiment of the present invention;

Figure 4 is a diagram showing a scenario of an example of a second embodiment of the present invention;

Fig. 5 is a block diagram showing a two-dimensional code generating apparatus according to a third embodiment of the present invention.

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in the following description.

First embodiment

Referring to FIG. 1, a first embodiment of the present invention provides a method for generating a two-dimensional code, including:

Step 101: Acquire a first back image of the first terminal device.

The first terminal device may be a mobile phone or a tablet computer. The back image refers to an image of the back of the terminal device when the end face where the main display screen of the terminal device is located as the front side. Under normal circumstances, the back image of the terminal device has a strong recognition. Taking the mobile phone as an example, the back of the mobile phone usually has a camera, a flash, and a brand logo LOGO. Different types of terminal devices usually have a unique back layout, so the first terminal device can be identified based on the back image.

Step 102: Match the first back image with the sample image in the pre-established sample library to obtain a first sample image that matches the first back image.

Wherein, the first back image is matched with the sample image in the sample library, and after the matching is successful, the first sample image matching the first back image is obtained; specifically, the preset similarity algorithm can be used in the sample The sample image in the library is found to have a similarity with the first back image within a predetermined range. If there are multiple sample images satisfying the condition, the sample image with the highest similarity is selected as the first sample image.

Optionally, the first sample image may correspond to the model information of the first terminal device; when the first sample image is determined, the model information of the first terminal device may be determined, so that the back of the terminal device may be implemented. The image automatically recognizes the model information.

Step 103: Acquire a first URL corresponding to the first sample image according to a correspondence between the pre-established sample image and the uniform resource locator URL.

Specifically, the URL is an address of a standard resource on the Internet; a URL corresponding to the first sample image is a URL corresponding to the first back image.

Step 104: Generate a two-dimensional code corresponding to the first URL according to the first URL.

The two-dimensional code generated according to the first URL is a two-dimensional code corresponding to the first terminal device, and when the back image of the first terminal device is obtained, a two-dimensional code corresponding to the first terminal device is generated; When the QR code is used, the user does not need to subjectively select which QR code to scan.

Preferably, step 102 includes:

In the first step, image processing is performed on the first back image to obtain a binary image of the first back image.

The binary image refers to an image in which each pixel is not black or white, and the gray value has no intermediate transition; the binary image can more intuitively reflect the contour feature of the first back image.

In the second step, the binary image is matched with the sample image in the pre-established sample library to obtain a first sample image that matches the binary image.

Specifically, the binary image is matched with the sample image in the sample library to obtain a first sample image; wherein the sample image in the sample library is also in the form of a binary image, so as to be a matching sample.

Preferably, the first step mentioned above comprises:

Among them, the binarization process will bring the whole image to a distinct black and white effect; the edge of the image refers to the part of the image where the brightness of the local area changes significantly, and the gray level profile of the area can generally be regarded as a step, that is, from a gray scale. The value changes sharply in a small buffer area to another gray value with a large difference in gray scale. The edge part of the image concentrates most of the information of the image. The determination and extraction of the edge of the image is very important for the recognition and understanding of the entire image scene. It is also an important feature that the image segmentation depends on. The edge detection is mainly the gray level change of the image. Measurement, detection and localization; edge detection can greatly reduce the amount of data processed by the image, eliminate information that is not related to the edge, and retain the important structural properties of the image. Image binarization processing and edge detection are performed on the first back image to obtain an edge binary image.

Further, the texture feature analysis positioning algorithm may be used to perform row and column scanning on the edge binary image, determine a candidate region containing the mobile phone feature line segment in the column direction, determine the starting row coordinate and height of the region, and then perform the region on the region. Column scan determines its column coordinates and width, thus The back area of the first terminal device is determined.

Since the scene identifying the terminal device is usually the user holding the terminal device, it is necessary to intercept the regular region above the grip edge from the back region as a binary image of the first back image.

As an example, referring to FIG. 2, when the user holds the terminal device, the obtained edge binary image is as shown in FIG. 2, and only the upper part of the back of the terminal device, that is, the holding edge, can be recognized due to the presence of the holding area. In the above part, according to the smoothness of the edge of the terminal device, the three sides of the back of the terminal device and an irregular grip edge are filtered out, and then the ruled area above the grip edge is intercepted from the back region as the terminal device. Binary image.

Optionally, step 101 includes:

Wherein, when the first terminal device scans the two-dimensional code through the camera, the first back image is obtained by taking a picture of the back of the first terminal device. Alternatively, a camera can be deployed on the two-dimensional code or around the two-dimensional code for photographing. In this way, for the same resource, such as an application, only one two-dimensional code can be set; when the user scans the two-dimensional code with the terminal device, the terminal device is photographed to obtain a URL corresponding to the terminal device, and then generated. The two-dimensional code corresponding to the URL is a two-dimensional code that matches the user's terminal device.

Preferably, the method further comprises:

Obtaining a second URL of the second terminal device and a second back image;

When the second terminal device obtains the second URL and the second back image of the second terminal device when the second terminal device does not have the sample image in the sample library, and performs image processing on the second back image to obtain a sample image, which is compared with the second URL. Correspondence is stored in the sample library to update the sample library.

In the above embodiment of the present invention, the back image of the terminal device is acquired and matched with the sample image in the sample library, thereby obtaining a URL corresponding to the terminal device and automatically generating a two-dimensional image. Code, when there are multiple two-dimensional codes, the user's terminal device can be accurately identified, and the user does not need to subjectively select which two-dimensional code to scan; and the back image is subjected to image processing to intercept the ruled area above the grip edge The invention has high accuracy; the invention improves the user experience and solves the problem that the existing two-dimensional code generation method cannot automatically determine the two-dimensional code required by the user, which brings certain inconvenience to the user.

Second embodiment

Referring to FIG. 3, a second embodiment of the present invention introduces a two-dimensional code generating method provided by the present invention with a specific example. Taking the mobile phone as the terminal device, the two-dimensional code generating device shown in FIG. 3 includes the following modules:

The two-dimensional code display module 301 is configured to convert the URL into a two-dimensional code.

The camera module 302 is configured to capture an image of the back of the mobile phone.

The data module 303 stores information about the existing mobile phone, including the back pattern of each mobile phone and the corresponding URL address.

The logic module 304 is configured to control the camera, capture, sample, compare data, and obtain a URL.

The device mainly performs the following processes:

First, the establishment of the sample library:

Among them, the sample library can be built locally or in the cloud. Collecting the back image of each brand of mobile phone, the upper part of the northern part of most mobile phones has a camera, flash, logo and other logo contrast.

1.1. Perform edge feature extraction on the back image in the mobile phone sample library;

For the collected back image, noise filtering, automatic white balance, automatic exposure, gamma correction, contrast adjustment, edge enhancement processing, etc. Image edge recognition, such as OpenCV's cvCanny function, can be implemented by graying the original image, Gaussian filtering the image to quantify the data, and finally converting it into a binary image.

Specifically, referring to FIG. 4, FIG. 4 is a binary image of a back image of a mobile phone.

1.2. Establish a sample database database of URLs and binary images; specifically, a database between the URL and the binary image can be established to make the correspondence clear at a glance.

Second, when a mobile phone scans a two-dimensional code through a camera, the two-dimensional code generating device mainly performs the following processes:

2.1. The camera module 302 is used to capture the image of the back of the mobile phone; the camera can be driven into the monitoring mode by software to collect images in real time.

2.2. Obtain the feature analysis segment through the image analysis of the logic module 304; mainly perform the overall contrast, denoising, grayscale, black and white processing on the back image of the collected mobile phone, and then extract the edge image and convert it into binary edge data. .

Since the user who recognizes the mobile phone is a handheld mobile phone, only the upper part of the back of the mobile phone can be recognized. According to the smoothness of the edge of the mobile phone, the three sides of the back of the mobile phone and an irregular handshake edge are filtered out, and then from the edge of the handshake. Cut off at the highest point and get the final segment for feature analysis.

After obtaining the feature analysis segment of the back area of the mobile phone, the edge binary image is further extracted, and then the logic module 304 compares the binary image with the feature library in the data module 303, obtains the relevant URL, and displays the QR code. Module 301 generates a two-dimensional code from the URL.

Specifically, the algorithm for converting the two-dimensional code by the URL generates the real-time generated two-dimensional code, and the mobile phone can scan the mobile phone, and the mobile phone automatically guides to the corresponding URL to realize the intelligent jump function.

Third embodiment

Referring to FIG. 5, a third embodiment of the present invention provides a two-dimensional code generating apparatus, including:

The first obtaining module 501 is configured to acquire a first back image of the first terminal device;

The matching module 502 is configured to match the first back image with the sample image in the pre-established sample library to obtain a first sample image that matches the first back image;

The second obtaining module 503 is configured to acquire a first URL corresponding to the first sample image according to the correspondence between the pre-established sample image and the uniform resource locator URL;

The generating module 504 is configured to generate a two-dimensional code corresponding to the first URL according to the first URL.

Preferably, the matching module 502 includes:

An image processing sub-module configured to perform image processing on the first back image to obtain a first back a binary image of a partial image;

Preferably, the image processing sub-module comprises:

Preferably, the first obtaining module 501 includes:

Preferably, the device further comprises:

In the above embodiment of the present invention, by acquiring the back image of the terminal device and matching with the sample image in the sample library, the URL corresponding to the terminal device is obtained and the two-dimensional code is automatically generated, when there are multiple two-dimensional codes. The user can accurately identify the terminal device of the user, and the user does not need to subjectively select which two-dimensional code to scan; and the back image is subjected to image processing to intercept the regular region above the grip edge, and the accuracy is high; The user's experience solves the problem that the existing two-dimensional code generation method cannot automatically determine the two-dimensional code required by the user, which brings a certain inconvenience to the user.

It should be noted that the two-dimensional code generating device provided by the embodiment of the present invention is a device applying the above method, that is, all the embodiments of the foregoing method are applicable to the device, and all of the same or similar beneficial effects can be achieved.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Industrial applicability

The foregoing technical solution provided by the embodiment of the present invention can be applied to the process of generating a two-dimensional code by acquiring the back image of the terminal device and matching the sample image in the sample library, thereby obtaining a URL corresponding to the terminal device and automatically generating the URL. The two-dimensional code, when there are multiple two-dimensional codes, can accurately identify the user's terminal device, and the user does not need to subjectively select which two-dimensional code to scan; and the back image is image-processed and intercepts the grip edge. The rule area has high precision; the invention improves the user experience and solves the problem that the existing two-dimensional code generation method cannot automatically determine the two-dimensional code required by the user, which brings certain inconvenience to the user.

Claims

A two-dimensional code generation method, comprising:

Obtaining a first back image of the first terminal device;

Matching the first back image with a sample image in a pre-established sample library to obtain a first sample image that matches the first back image;

Obtaining, according to a correspondence between the pre-established sample image and the uniform resource locator URL, a first URL corresponding to the first sample image;

And generating a two-dimensional code corresponding to the first URL according to the first URL.
The method of claim 1, wherein the matching the first back image with a sample image in a pre-established sample library results in a first sample image that matches the first back image Steps include:

Performing image processing on the first back image to obtain a binary image of the first back image;

The binary image is matched with the sample image in the pre-established sample library to obtain a first sample image that matches the binary image.
The method according to claim 2, wherein the step of performing image processing on the first back image to obtain a binary image of the first back image comprises:

Performing image binarization processing and edge detection on the first back image to obtain an edge binary image of the first back image;

Performing a row and column scan on the edge binary image to determine a back region of the first terminal device;

Obtaining a ruled area above the gripping edge from the back area, determining that the ruled area is a binary image of the first back image, and the holding edge is a grip of the user holding the first terminal device The edge of the area.
The method of claim 1, wherein the step of acquiring the first back image of the first terminal device comprises:

When detecting that the first terminal device scans the two-dimensional code, the back of the first terminal device is photographed, and the captured first back image is acquired.
The method of claim 2, wherein the method further comprises:

Obtaining a second URL of the second terminal device and a second back image;

Performing image processing on the second back image to obtain a binary image of the second back image;

A binary image of the second back image is used as the sample image, and is stored in the sample library corresponding to the second URL.
A two-dimensional code generating device, comprising:

a first acquiring module, configured to acquire a first back image of the first terminal device;

a matching module, configured to match the first back image with a sample image in a pre-established sample library to obtain a first sample image that matches the first back image;

a second acquiring module, configured to acquire a first URL corresponding to the first sample image according to a correspondence between a pre-established sample image and a uniform resource locator URL;

And generating a module, configured to generate a two-dimensional code corresponding to the first URL according to the first URL.
The apparatus of claim 6 wherein said matching module comprises:

An image processing sub-module configured to perform image processing on the first back image to obtain a binary image of the first back image;

An image matching sub-module is configured to match the binary image with a sample image in a pre-established sample library to obtain a first sample image that matches the binary image.
The apparatus of claim 7, wherein the image processing sub-module comprises:

An edge detecting unit configured to perform image binarization processing and edge detection on the first back image to obtain an edge binary image of the first back image;

a row and column scanning unit configured to perform a row and column scan on the edge binary image to determine a back region of the first terminal device;

The area intercepting unit is configured to intercept a regular area above the gripping edge from the back area, and determine that the regular area is a binary image of the first back image, and the holding edge is a user holding the first The edge of the holding area of a terminal device.
The apparatus of claim 6, wherein the first obtaining module comprises:

The photographing sub-module is configured to: when detecting that the first terminal device scans the two-dimensional code, take a photo of the back of the first terminal device to obtain the captured first back image.
The apparatus of claim 7 wherein said apparatus further comprises:

a sample establishing module, configured to acquire a second URL of the second terminal device and a second back image;

Performing image processing on the second back image to obtain a binary image of the second back image;

A binary image of the second back image is used as the sample image, and is stored in the sample library corresponding to the second URL.