Lighting in Machine Vision

Lighting is a crucial aspect of Machine Vision as it determines the quality of the images that the camera captures. Proper lighting is essential to ensure that the objects being inspected are accurately represented in the image. Inadequate or incorrect lighting can result in poor image quality, leading to inaccurate results.

Types of Lighting Techniques

There are various types of lighting techniques used in machine vision, including:

• Backlighting: used to highlight the outline of an object and is useful for inspecting the surface of a flat or curved object.
• Front lighting: used to illuminate the object from the front and is useful for inspecting the surface of an object for defects.
• Dark field lighting: used to highlight the edges of an object and is useful for inspecting the edges of a part for burrs or other defects.

Factors Affecting Lighting Choice

The color of the object being inspected can also affect the choice of lighting. Additionally, the angle and intensity of the lighting can also affect the image quality. The lighting setup must be optimized for the specific application and the type of camera used. It is important to consider factors such as the distance between the object and the camera, the size of the object, and the ambient lighting in the environment.

Overall, lighting is a critical component of machine vision, and careful consideration must be given to ensure that the lighting setup is appropriate for the application.

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