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Measurement principle of binocular stereo vision technology

2021-09-15

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The basic principle of binocular stereo vision is to observe the same scene from two viewpoints to obtain perceptual images from different perspectives, and then calculate the positional deviation (parallax) between image pixels through the principle of triangulation to obtain the three-dimensional information of the scene. This process is similar to the human visual perception process.

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In the hardware structure of the binocular stereo vision system, two cameras are usually used as the acquisition equipment for visual signals, which are connected to the computer through a dual-input channel image acquisition card, and the analog signals collected by the cameras are sampled, filtered, enhanced, and modulo-digital. conversion, and finally provide image data to the computer. A complete binocular stereo vision system can usually be divided into six parts: digital image acquisition, camera calibration, image preprocessing and feature extraction, image correction, stereo matching, and three-dimensional reconstruction.