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Character Detection At The Bottom of The Can

Testing Requirements

 

·Detect the characters at the bottom of the can and distinguish them from the background color at the bottom

 
·The material of the product may cause mixing problems, and the light source needs to be compatible with characters on different products
 
·Static shooting

 

The Effect Without Light Sources

 

  weidaguang.jpg

 

Comparison of Images With Different Effects

 

yuanding.png        tongzhou.png 

          The effect of dome light source                         The effect of coaxial light source

 

The above is a comparison of the effects, with the left side showing the use of a dome light source and the right side showing the addition of a coaxial light source.

 

The Effect of Using a Special Circular Light Source

 

teshu.png

 

The current lighting effect can detect characters, and there is a clear difference between the characters and the background. Products made of different materials can also be compatible with each other.

 

In Summary:

 

·Lighting: Characters are visible and compatible with one type of light source;
 
·Support static shooting;
 
·Try to use circular light sources as much as possible.

 

The General Process of Selecting a Light Source

·Understand project requirements and clarify the goals to be tested or measured;
·Analyze the difference between the target and background, and identify the optical phenomenon with the greatest imaging difference between the two;
·Based on the coordination between the light source and the target, preliminarily determine the type and color of the light source;
·Test with actual light sources to determine the lighting method that meets the requirements;
·Determine the customer's product based on the actual situation on site.

 

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