Uniapp implements ID card recognition OCR

With the continuous development of Internet technology, more and more application scenarios require identity authentication, and ID card recognition has become an important part of it. In order to facilitate users, the application needs to simplify the ID card recognition process as much as possible and improve the user experience. During development, uniapp, with its cross-platform development advantages, has become a good choice to implement OCR for ID card recognition.

1. What is OCR technology

OCR (optical character recognition, optical character recognition) refers to the automatic extraction of text or character information from unstructured text such as paper, pictures, videos, etc. Recognized technology. Its core technology is to use computer vision and image processing algorithms to convert text on paper or pictures into characters that can be recognized by computers.

OCR technology has a wide range of applications, especially in finance, medical, logistics and other fields. It is commonly used in business scenarios such as document identification, barcode identification, and invoice identification. In the era of mobile Internet, people are increasingly inclined to complete business operations through mobile phones. Therefore, it has become particularly important to implement OCR for ID card recognition on the mobile terminal.

2. Introduction to uniapp framework

uni-app is a cross-platform development framework based on Vue.js. It is a development framework launched by the famous Internet company DCloud. Its characteristic is that it adopts a unified compilation method. One code can generate applications for multiple platforms such as iOS, Android, H5, etc., which greatly improves development efficiency and reduces development costs.

uniapp provides a wealth of components and APIs, as well as a variety of plug-in interfaces, with high flexibility and can meet the different needs of the development team. It has been widely used in APPs with a large number of users and has good stability.

3. Steps for uniapp to implement OCR for ID card recognition

1. Connect to Baidu AI open platform and obtain the API key

First, you need to open it on Baidu AI Apply for the OCR API key in the platform, create an application in the console, and then configure ID card recognition to obtain the key. The secret key contains the information required for the necessary ID card identification service, and the secret key needs to be saved carefully.

2. Install the OCR plug-in through the uni app plug-in marketplace

Next, you need to install the OCR plug-in through the marketplace. After the installation is complete, obtain the plug-in provider information through the getProvider method of uniapp. Add the provider field in the plug-in configuration so that the code can request OCR services from the plug-in provider.

3. Write API interface in uni app

Before calling the OCR plug-in, you need to write the API interface in the uni app project first so that the program can send OCR messages through this interface The plug-in provider requests OCR services. The writing of the interface mainly includes the acquisition of request parameters, setting of the request address and data processing. At the same time, you also need to configure the interface to POST mode in order to send POST requests to the OCR plug-in provider.

4. Call the OCR plug-in to obtain the ID card recognition result

Through the apicloud-jsbridge provided by the uni app plug-in development kit, in the uni app webview page, call the interface to request OCR The plug-in provider's OCR service returns recognition results. By judging the status code of the returned data and performing data analysis, the identified ID card information can be obtained.

4. Summary

Through the above steps, you can easily realize the ID card recognition OCR function. As a cross-platform development framework, uniapp can help developers quickly call the API interface of the OCR plug-in on multiple platforms and realize ID card recognition through webview. Compared with the traditional ID card recognition process, uniapp greatly saves development costs, reduces the complexity of mobile user operations, and improves the user experience.

However, it should be noted that when calling the OCR plug-in, you need to ensure the clarity and lighting conditions of the ID card image, so as not to affect the recognition accuracy of the ID card. Therefore, these factors must be reasonably controlled during the development process. In addition, attention should also be paid to the request frequency of the OCR API interface, data security and other issues to ensure the security of ID card information.

In short, the application of ID card recognition OCR technology has penetrated into many mobile Internet application scenarios, and with the continuous advancement of technology, its use will become more and more widespread. In the process of realizing ID card recognition OCR, taking advantage of uniapp as a cross-platform development framework can greatly improve development efficiency and user experience, and achieve better business goals.

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