Abstract
For more than a century, photographs were taken by exploiting the chemical reaction of light rays hitting the photographic film. The photographic film is a plastic film that is coated with light-sensitive silver-halide crystals. The emulsion will gradually darken when exposed to light, but the process is too slow and incomplete to be of any practical use. A principle of camera obscura is used to resolve this problem. The camera obscura (“dark room”—Latin) is an optical device consisting of a box and a small hole (pinhole) on one of its sides, as shown in Fig. 1.1a. Light that passes through the hole projects an inverted image of the world on the opposite side, but with preserved color and perspective.
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Popovic, V., Seyid, K., Cogal, Ö., Akin, A., Leblebici, Y. (2017). Introduction. In: Design and Implementation of Real-Time Multi-Sensor Vision Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-59057-8_1
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DOI: https://doi.org/10.1007/978-3-319-59057-8_1
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