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Polarization-Based Imaging: Basics and Benefits

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With spatial correction, line scan polarization cameras detect birefringence, stress, surface roughness, and physical properties that cannot be detected with conventional imaging.

XING-FEI HE, TELEDYNE DALSA

There are three fundamental properties of light: intensity, wavelength, and polarization. Almost all cameras today are designed for monochrome or color imaging. A monochrome camera is used to measure the intensity of light over a broadband spectrum at pixel level1, while a color or multispectral camera is used to detect the intensities of light at the red, green, blue, and near-IR wavelength bands2,3. Similarly, a polarization camera captures the intensity of light at multiple polarization states. According to a recent AIA market study, worldwide camera sales in machine vision reached...Read full article

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    Glossary
    polarization
    Polarization refers to the orientation of oscillations in a transverse wave, such as light waves, radio waves, or other electromagnetic waves. In simpler terms, it describes the direction in which the electric field vector of a wave vibrates. Understanding polarization is important in various fields, including optics, telecommunications, and physics. Key points about polarization: Transverse waves: Polarization is a concept associated with transverse waves, where the oscillations occur...
    machine vision
    Machine vision, also known as computer vision or computer sight, refers to the technology that enables machines, typically computers, to interpret and understand visual information from the world, much like the human visual system. It involves the development and application of algorithms and systems that allow machines to acquire, process, analyze, and make decisions based on visual data. Key aspects of machine vision include: Image acquisition: Machine vision systems use various...
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