Surface Barcode QR Code Character & Image OCR Visual Inspection Software

Surface Barcode QR Code Character & Image OCR Visual Inspection Software

Features of OCR inspection system

Features of OCR inspection

Inspection principle

Optical Character Recognition is the use of optical technology and computer technology to read the text printed or written on paper, and convert it into a format that can be accepted by computers and understandable by humans. This technology is now relatively mature. Optical character recognition refers to the use of optical methods to convert the text in paper documents into black and white dot matrix image files for printed characters, and convert the text in the image into text format through recognition software for further processing by word processing software. editing technology.

Image text recognition in industrial scenes is more complex and appears in many different occasions. For example, the text on the packaging of pharmaceuticals, the text on various steel parts, the sprayed text on the surface of the container, the personalized text on the store logo, etc. In such images, character parts may appear in various forms such as curved arrays, curved surfaces, slope distributions, wrinkled deformations, incompleteness, etc., and are quite different from standard characters, making it difficult to detect and recognize glyphs.

Applications of OCR inspection

1. Barcode/QR code and OCR/OCV character detection;
2. Visual inspection of cap characters;
3. Mobile phone shell character detection;
4. Visual inspection of packaging characters/labels;
5. Power battery appearance feature detection;
6. Read and detect the character code of the PCB circuit board;
7. Visual inspection of card characters and visual inspection of surface character recognition;
8. Screen printing inspection of electronic capacitors and visual inspection of electronic components;
9. Characters and barcodes on semiconductor wafers;
10. Automobile manufacturing part codes and symbols;
11. Printing and packaging plants perform visual inspections of labels on food, beverage, pharmaceutical and consumer product packaging.

Advantages of OCR inspection

• 1. Higher efficiency: Machine vision detection is much faster, it can detect hundreds or even thousands of components per minute, and it can work continuously for 24 hours.
• 2. Higher accuracy: not subject to subjective control. As long as there is no difference in parameter settings, multiple machines with the same configuration can guarantee the same accuracy.
• 3. Lower overall cost: machine inspection is more effective than manual inspection. Machine vision inspection is less expensive in the long run.
• 4. Digital statistical management: measure data, generate reports after measurement, no need to manually add one by one.
• 5. Applicable to dangerous test environments: The machine can complete the test work well in harsh and dangerous environments and when human vision cannot meet the needs.
• 6. More objective and stable: In the process of manual testing, the test results will be affected by factors such as personal standards, emotions, and energy. The machine strictly follows the set standards, and the test results are more objective, reliable and stable.
• 7. Simple maintenance: low technical requirements for operators, long service life, etc.

In general, machine vision inspection can efficiently, accurately, and stably detect numbers and barcodes of various code systems, which is more objective, non-contact, and high-precision than manual inspection. Especially in the field of industrial production, it has strong application value in repetitive and mechanical work, which not only ensures the stability of product quality, but also improves the competitiveness of products for enterprises.