Obtaining high-contrast, high-resolution images is especially important when developing a machine vision or image processing system. Without high contrast, the features of interest may not be discernable and, if the captured image is not of high-enough resolution, then parameters of objects may not be measured correctly. While lighting plays a key role in ensuring that image contrast is maximized, the optics, lenses and image sensors used in such systems must be carefully chosen to ensure that the required resolution will be obtained. Just as choosing a high-performance lens with a sensor with large pixels will not result in a high resolution image neither will choosing a low-performance lens with a sensor with smaller pixels. However, by carefully balancing these two factors, the optimum lens/sensor combination can be chosen to meet the resolution required.
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