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Briefly describe the photoelectric 3D image technology of 3D image sensor
2021-09-15
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According to different methods of obtaining image information, photoelectric 3D imaging technology is divided into two types: active and passive. Passive technology mainly accepts radiation from objects or emissions from the environment. The light onto the object forms a 3D image by detecting the light reflected from the object.
Most of the previous technical research focused on passive 3D technology, using the principle of triangulation, through two cameras at a certain distance, the image produced by the left camera represents depth information, and the right camera produces a two-dimensional image of the difference. The point is that cameras that generate depth information need to separate out the depth information. Passive 3D imaging technology requires the object to be photographed to have prominent contour features, such as edges, corners, lines, etc. Its advantage is that it does not require special hardware conditions, and it has been used successfully in several ways. The disadvantage of this technique is that it requires two or more high-quality cameras and image processing software. Image quality, camera speed, data transmission, etc. are all limiting factors for this mechanism to be widely used.
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