The King of Barcode Scanners: 2D Barcode Scanners

Introduction: Barcode scanning recognition technology is widely used in commerce, postal services, book management, warehousing, industrial production process control, transportation and other fields. It is produced and developed in computer applications. It has fast input, high accuracy, low cost, Strong reliability and other advantages. Barcode scanning recognition technology is the technical basis for realizing POS system, EDI, e-commerce and supply chain management, and is an important technical means for the modernization of logistics management.

Friends who often use barcode scanning scanners know that scanning scanners are divided into 1D scanners and 2D scanners, as well as red light and laser, but some friends still don’t know much about image scanning. Today, Let us explain to you about the knowledge of image scanners. Barcode scanning scanner, in simple terms, is a simple tool for reading barcodes into characters. There are several ways to classify it, and the most common way is to divide it according to the type of optics, which can be divided into three categories, namely: laser, CCD and 2D barcode scanner.

Due to the limitation of the principle, the laser scanning scanner can only scan one-dimensional paper barcodes, but cannot scan screen barcodes.

CCD scanner can read screen barcodes, paper barcodes, reflective barcodes, stained or blurred barcodes, can read all kinds of electronic screens, and can be used for mobile payment scanning; and it adopts an integrated structure without moving parts. Good anti-seismic effect and high safety.

The 2D scanning scanner uses image analysis technology. Simply put, it scans and obtains the image of the area where the barcode is located. After preprocessing, the image is digitized and the image features are segmented. Partially perform feature matching and judgment. When the feature model is successfully matched, the data is extracted and output, and the scanning is completed. 

The 2D barcode scanner can read one-dimensional and 2D barcodes, screen barcodes, reflective barcodes, stained or blurred barcodes, and with the help of powerful image analysis technology, it can further improve the ability to read damaged barcodes.

Especially for QR codes, it can usually be read correctly when the damage rate does not exceed 30%. Since the 2D code has the characteristics of large information capacity and can contain global characters, the field of use is constantly expanding, and the image barcode scanning scanner is an inevitable tool for reading 2D codes.