Magnetic Cylinder and Arc Edge Size Detection
Experimental Requirements
- Simultaneously detect cylinder and arc edge dimensions.
- The detection result requires clear measurement of the cylinder and arc edge dimensions with no shadows.
- Static shooting.
Unlit Product Appearance
Due to shadowing at the edges of the magnet, it may lead to unclear edges when illuminated, which can affect detection. Therefore, a white ring light source was used, with high-angle direct lighting, ensuring that the cylinder and arc edge dimensions are clearly measurable and free of shadows.
Lighting Effect Comparison
Here's a comparison between indoor ambient lighting and the effect under a ring light source.
- Indoor Lighting: Shadows are present, leading to unclear edges.
- Under Ring Light: Edges are clear and shadow-free.
Conclusion
- Lighting: For size detection, shadows must be avoided.
- Static Shooting: The setup involves capturing static images.
- Prefer Ring Lights: For optimal results in reducing shadows.
General Light Source Selection Process
- Understand Project Requirements: Define the detection or measurement goals.
- Analyze the Object and Background: Identify the optical phenomena with the greatest imaging contrast between the object and background.
- Determine Light Source Type and Color: Based on the relationship between the light source and the target, preliminarily determine the type and color of the light source.
- Conduct Light Source Testing: Use actual light sources to determine the ideal lighting configuration.
- Adapt to Site Conditions: Ensure the lighting setup aligns with the actual conditions of the client's product.
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