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Definition
Image sensors are devices that produce an electronic signal proportional to the amount of light impinging on the device, typically arranged in two-dimensional pixel arrays. They can read out the image using on-chip amplification and analog-to-digital conversion and are typically controlled using electronic shutters.
Background
Materials and devices to sense light have a long history from antiquity to the present day. While camera obscura or pinhole cameras were being developed for centuries to focus light onto the image plane, only with the invention of the daguerreotype were images captured directly on plates in the late 1800s (Note: there were some camera precursors like heliography, but daguerreotypes were the first popular cameras). These plates would consist of polished metal such as silver exposed to photosensitive chemicals such as Bitumen of Judea,...
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Jayasuriya, S. (2020). Image Sensors. In: Computer Vision. Springer, Cham. https://doi.org/10.1007/978-3-030-03243-2_842-1
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DOI: https://doi.org/10.1007/978-3-030-03243-2_842-1
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