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Why do CCD or CID cameras are used?

(a) To generate the electronic signal representing the image

(b) To generate image’s hard copy

(c) To determine lighting of the image

(d) To capture heat signature

The question was posed to me in a job interview.

Origin of the question is Principle of Working in chapter Machine Vision Systems of Engineering Metrology

1 Answer

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Right option is (a) To generate the electronic signal representing the image

Explanation: CCD or CID cameras are used to generate the electronic signal that represents the image. The camera collects light from the image scene via lens and uses a photosensitive target to converts it into electronic signal.

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