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The Importance of Light Source in Machine Vision (Sharing Lighting Case Studies)

introduction

The light source in a machine vision system is a key component for achieving high-quality image capture. Proper light source not only improves the quality of the image, but also affects the detection efficiency and accuracy of the vision system. Choosing the right light source can significantly improve the overall performance of the system, simplify the image processing process, and improve the accuracy of detection.

Shooting under different light sources

Different light sources produce completely different imaging effects, which also leads to different detection algorithms.

The influence of light source

The choice of light source directly affects the image quality and effect of the machine vision system. As shown in the figure, different light sources can produce different imaging effects, which will further affect the selection and optimization of the detection algorithm. For example, using light sources of different colors and intensities can highlight certain features or hide irrelevant details, thereby simplifying algorithm processing requirements.

 Red light source filters out red text

case analysis

In practical applications, it is crucial to choose the right light source according to the specific needs of the task. For example, when detecting objects with complex surface features, choosing the right light source can significantly improve contrast and recognition rate. In a case involving metal parts detection, by using a light source with a specific wavelength, the interference caused by surface reflection can be reduced and the detection accuracy can be improved.

The bottle cap is black with a red and black staggered background pattern. The barcode is laser engraved and appears gray. In order to show the barcode, the characters should be brightened and the background and characters should be clearly distinguished. If we use a red light source, the red in the background will be filtered out and will interfere with the white characters. Therefore, we should use the complementary principle of light sources and use a blue light source to make the red background as black as possible.

 in conclusion

 

The correct light source selection is crucial to the success of the machine vision system. It not only affects the imaging quality, but also directly affects the stability and reliability of the system. Through the analysis of actual cases, we can see that the appropriate light source selection can greatly optimize the performance of the visual system, which is essential for high-precision and high-efficiency visual inspection systems.
来源： Machine Vision Knowledge Recommender

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