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How does color detection work in terms of hardware (cameras)?

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How does color detection work in terms of hardware (cameras)?

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In a charge-coupled device color (3CCD) camera, color is selected using a prism-based interference filter that splits the incoming light into its primary (red, green, and blue) components. Each of the three colors is then detected by a dedicated CCD and the final color image is reconstructed by combining the outputs from the three detectors. All three color images are captured at the same object spot and at the same time. In a tri-linear color camera, three linear arrays are fabricated on one single die and coated with corresponding color filters. These are absorbing filters that use dye or pigment. In the tri-linear camera, the three linear arrays detect a slightly different field of view, necessitating spatial correction in the reconstruction of the color image.

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