Detection of Characters on the Bottom of Beverage Cans
Detection Requirements
- Detect characters on the bottom of beverage cans, distinguishing between the characters and the background.
- The material of the products might cause mixing issues, so the light source needs to be compatible with characters on different products.
- Static imaging.
Unlit Appearance
Comparison of Lighting Effects
- Dome Light Source: Left image shows the effect using a dome light.
- Coaxial Light Source: Right image shows the effect with a coaxial light.
These approaches may not be compatible with material variations.
Special Ring Light Source Effect
This lighting setup allows for the detection of characters, with a clear distinction between characters and the background. It also ensures compatibility across different material types.
Conclusion
- Lighting: The goal is to ensure characters are visible and compatible with a single light source.
- Static Imaging: This setup involves capturing static images.
- Prefer Ring Light Sources: Ring lights are recommended for their effectiveness in this context.
General Light Source Selection Process
- Understand Project Requirements: Define what needs to be detected or measured.
- Analyze the Target and Background: Identify the optical phenomenon that shows the greatest contrast between the target and background.
- Determine Light Source Type and Color: Based on the interaction between the light source and the target, determine the type and color of the light source.
- Test with Actual Light Sources: Conduct tests to determine the best lighting method.
- Adapt to Site Conditions: Ensure the setup aligns with real-world conditions of the client's product.
FALenses Technology specializes in providing machine vision core hardware. You can go to the official website of FALenses Technology at https://www.falenses.com/ for more information.