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Learning OpenCV 3 Computer Vision with Python - Second Edition by Joe Minichino

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Depth estimation with a normal camera

A depth camera is a fantastic little device to capture images and estimate the distance of objects from the camera itself, but, how does the depth camera retrieve depth information? Also, is it possible to reproduce the same kind of calculations with a normal camera?

A depth camera, such as Microsoft Kinect, uses a traditional camera combined with an infrared sensor that helps the camera differentiate similar objects and calculate their distance from the camera. However, not everybody has access to a depth camera or a Kinect, and especially when you're just learning OpenCV, you're probably not going to invest in an expensive piece of equipment until you feel your skills are well-sharpened, and your interest ...

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