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What is OCR technology?

Optical Character Recognition (English: Optical Character Recognition, OCR) refers to the process of analyzing and recognizing image files of text materials to obtain text and layout information.

Similar to image recognition and machine vision technology, the processing process of OCR technology is also divided into input, pre-processing, mid-term processing, post-processing and output process.

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For different image formats, there are different storage formats and different compression methods. Currently, there are OpenCV, CxImage, etc.

Pre-processing – binarization

Most of the pictures taken by digital cameras today are color images, which contain a huge amount of information and are not suitable for OCR technology.

For the content of the picture, we can simply divide it into foreground and background. In order to make the computer faster and better perform OCR related calculations, we need to process the color image first, so that only the foreground information and background information remain in the picture. Binarization can also be simply understood as “black and white”.

image noise reduction

For different images, the definition of noise may be different, and the process of denoising according to the characteristics of noise is called noise reduction.

tilt correction

Because ordinary users, when taking pictures of documents, it is difficult to shoot completely in line with horizontal and vertical alignment, so the pictures taken will inevitably be skewed, which requires image processing software to correct.

Mid-term processing – layout analysis

The process of dividing document pictures into paragraphs and branches is called layout analysis. Due to the diversity and complexity of actual documents, this step still needs to be optimized.

character cutting

Due to the limitations of photographing and writing conditions, characters are often stuck and pens are broken. Directly using such images for OCR analysis will greatly limit OCR performance. Therefore, character segmentation is required, that is, to separate different characters.

Character recognition

In the early stage, template matching was mainly used, and in the later stage, feature extraction was mainly used. Due to the influence of factors such as text displacement, stroke thickness, broken pen, adhesion, rotation, etc., the difficulty of feature extraction is greatly affected.

Layout restoration

People hope that the recognized text is still arranged like the original document picture, and the paragraphs, positions, and order are output to Word documents, PDF documents, etc., and this process is called layout restoration.

post processing

According to the relationship of specific language context, the recognition result is corrected.

output

Output the recognized characters as text in a certain format.

What are the applications of handheld terminals based on OCR technology?

Through the handheld terminal PDA loaded with OCR character recognition software, many scene applications can be realized, such as: car license plate recognition, container number recognition, imported beef and mutton weight label recognition, passport machine-readable area recognition, electric meter reading recognition, steel coil Recognition of sprayed characters.

The manufacturing industry is entering an era of comprehensive digitalization. Promoting the in-depth application of digitalization and intelligence in key links such as production lines and warehouse management, optimizing the process system, and realizing the overall and visualized operation of planning, scheduling, logistics, and information flow are the most advanced digital construction of enterprises. , an inevitable choice to complete the transformation of intelligent manufacturing.

Help manufacturing companies to continuously break through the status quo, improve the degree of digitalization, and achieve further cost reduction and efficiency increase.

Production line – breaking the routine and continuously improving the efficiency of the production process

Assembling/packaging related link – semi-automatic scanning method

Product coding and coding: Coding and coding of products through the coding system.

Code packaging level association: After all products are packed, use data acquisition equipment to scan the barcodes on all levels of packaging, establish the corresponding relationship between the barcode and the box/box pallet, and complete the association.

In this link, the manufacturer originally used scanning guns to improve work efficiency, but in the actual operation process, it was found that the scanning button needs to be pressed every time. The labor intensity is not low, and the operators are prone to fatigue, so the efficiency has not been significantly improved.

According to the needs of the actual scene, a semi-automatic scanning method was creatively developed, allowing the staff to bid farewell to the operation method of holding the product in one hand and scanning in the other, and supports automatic assembly line operation to reduce labor intensity. At the same time, it also supports barcode printing on the outer packaging box, so that multi-level data associations such as primary packaging code, secondary packaging code, and tertiary packaging code can be quickly completed, providing a data basis for later anti-counterfeiting traceability and rapid warehouse entry and exit.

MES Passing Station Information Collection——New Application of Visual Recognition Products

On the assembly line of the production process, there are many types and specifications of barcodes, and there are requirements for reading codes on different planes. Currently, handheld data collection tools are mainly used, and one hand holds the material and the other holds the scanning device to complete the work.

The visual recognition product provides a new operation method for the information collection of MES stations. The fixed code reader is introduced in the assembly line station, so that employees can free their hands to hold the items that need to be read. The code reading is more stable and fast, shortening the Production time, improve production efficiency, while also ensuring the accuracy of the data.

Production process control – application of fixed RFID technology

RFID technology can realize the identification and tracking of raw materials, parts, semi-finished products and finished products throughout the production process, reducing the cost and error rate of manual identification.

Mission 1——Process guidance

Status quo: Paper drawings cannot be enlarged or reduced; it is inconvenient to replace and easy to get dirty.

Task requirements: Complete the process correctly according to the process guidance diagram.

Effect: The accuracy rate is improved and the efficiency is improved.

Mission 2——Production Management

Status: The PC side cannot check the production progress anytime and anywhere.

Task requirements: Make inventory, production, equipment operation and other conditions real-time controllable.

Effect: The production process is visualized, and problems can be found in time.

Mission 3 – Packaging Association

Status quo: The scanning gun needs to be placed and placed frequently, which is not efficient; the workstation uses a PC, which has poor mobility.

Task requirements: Use a semi-automatic method to complete the code assignment and association operations.

Effect: hands free, precise matching.

Mission 4——Intelligent Forklift

Status quo: The operation of the industrial computer is complicated and the volume is large; the data communication capability is poor.

Task requirements: Upgrade the forklift to a smart forklift to complete inventory management tasks.

Effect: Dynamically grasp inventory information, improve management accuracy and efficiency.

Industrial-grade tablet, it is thin and reliable, has professional collection and real-time management capabilities, and the data management method provided can be widely used in multiple links such as production lines and supply chains. The rich bottom contact design endows the device with diversified application capabilities, supports mobile, semi-fixed, and fixed use in different scenarios, and allows one device to meet all your management needs.

In today’s industrial world, cybersecurity is the foundation every product must start with. Global industrial digitalization is entering a new stage of accelerated growth.

In the cybersecurity regulations that will come into effect in Europe and the United States in 2025 (ETSI EN 303 645 / NIST IR 8259), forward-thinking enterprises have already begun to prepare for the future. SWELL is one of the companies leading this transformation—it has built protective measures into every level of its products, rather than making repairs afterwards. Art and technology combined.

From the very beginning of system architecture, every SWELL industrial device has been designed with identity authentication, data encryption, secure boot, and vulnerability protection deeply integrated into its core.

Over the past decade, SWELL products have operated stably across 35 countries worldwide — a testament to the company’s proven cybersecurity excellence.

In various industries, enterprises are connecting more devices, personnel, and data than ever before. They are transforming from simple digital systems to intelligent operations. Whether in logistics, energy, healthcare, or manufacturing, this upgrade is redefining how information flows and decision-making processes operate. During this ongoing upgrade, industrial personal digital assistants, portable data terminals, rugged tablets, and handheld terminals have become key bridges connecting on-site data with enterprise systems. To ensure reliability and security, modern industrial equipment must not only have high performance and durability, but also be built with built-in cybersecurity features from the very beginning.

With global cybersecurity standards (ETSI EN 303 645 / NIST IR 8259) coming into effect in 2025, only devices designed with authentication, encryption, and secure update mechanisms at their core will remain compliant and competitive in the EU and US markets.

Evolving Industry Demands in Digital Transformation





Industry



Digital Applications



Upgraded Device Requirements




Logistics
Warehousing, sorting, transportation tracking, proof of delivery
Multi-mode communication, long battery life, IP68 protection


Energy
Power inspection, oil & gas monitoring
Explosion-proof design, data encryption, remote diagnostics


Healthcare
Ward data collection, asset tracking
Medical-grade safety certification, privacy protection, real-time synchronization


Manufacturing
Factory automation, equipment debugging, quality control
High-performance CPU, CAN bus interface, system customization



SWELL, with over a decade of R&D expertise, delivers rapid ODM/OEM customization solutions to global clients:


Rapid Response: A 35-member R&D team capable of completing software customization in as little as 3 days.
Cybersecurity Compliance: Fully aligned with ETSI EN 303 645 and NIST IR 8259A/B frameworks.
High Reliability: Certified to CE, FCC, IP68, and MIL-STD-810H standards.

No matter how unique your industry requirements may be, customization remains the key to greater value and long-term competitiveness.

Through higher cost performance and faster delivery, SWELL helps customers achieve sustainable brand growth.

As industrial digitalization and cybersecurity regulations continue to advance in parallel, the role of device manufacturers is shifting — from producers to strategic industry partners.

SWELL will continue to uphold its core strategy of Speed, Customization, and Security, working hand in hand with global partners to drive innovation and compliance in the industrial smart device landscape.