1. 3d principle - introduction
3D imaging is produced by the visual difference between the two eyes. There is usually a distance of about 8 cm between the eyes of the person (the pupil). In order for people to see 3D images, it is necessary to make the left and right eyes see different images, so that the two images have a certain gap, that is, the situation when the actual human eyes are viewed. 3D's three-dimensional feeling is such a source
2.3d principle - polarized 3D
Polarized 3D technology is also called polarized 3D. It is passively received and is often used in the polarized 3D technology of the projector industry. It requires two or more projectors with the same performance parameters to achieve 3D effects, while the polarized 3D technology used in the TV industry requires 240Hz or 480Hz. Refresh rate. This 3D technology has lower cost in terms of auxiliary equipment, but has higher requirements on output equipment.
3.3d principle - shutter 3D technology
Shutter-type 3D technology, the principle is based on the refresh time of the image frequency of the human eye, by increasing the fast refresh rate of the picture (at least 120Hz), the 60Hz fast refresh image of the left and right eyes will make people The image does not have a sense of jitter, and the same number of frames as the 2D video is maintained. The two eyes of the viewer see different images that are quickly switched, and an illusion is generated in the brain to view the stereoscopic image.
4.3d principle--implementation
There are many forms of 3D stereoscopic film production, and the polarized glasses method is widely used. It uses the method of observing the scene by the human eye, and uses two parallel movie cameras to represent the left and right eyes of the person, and simultaneously shoot two movie pictures with horizontal parallax. During the screening, two movie films were loaded into the left and right film projectors, and two polarizers with polarization axes of 90 degrees were placed in front of the projection lens. It displays a coherent three-dimensional picture, which makes the audience feel that the scene is coming in, or entering the deep recess of the screen, which can produce a strong sense of “immersivenessâ€.
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