With the continuous development of technology, naked-eye 3D video display has become an increasingly popular visual experience. Compared with traditional 3D display methods, naked-eye 3D does not require wearing special glasses, and viewers can directly enjoy the stereoscopic feeling with the naked eyes. The implementation of this technology relies on the support of multiple formats. The following are several major naked-eye 3D video display formats.
1. Multi-View Format
The multi-view format is the core of naked-eye 3D display technology. This format presents images from multiple perspectives so that viewers in different positions can see different images, thereby achieving a stereoscopic effect. Common multi-view formats include MVD (Multi-View Video Coding) and MV-HEVC (Multi-View High-Efficiency Video Coding). These formats encode information from multiple views to ensure efficient transmission and decoding, thereby achieving high-quality naked-eye 3D display.
2. Light Field Display
Light field display technology is one of the cutting-edge technologies in the field of naked-eye 3D display. This technology generates highly realistic 3D images by recording and reproducing the propagation path of light in space. Light field display formats include LFT (Light Field Transfer) and HoloLens. These formats achieve a more natural visual experience by capturing and processing a large amount of light data. The audience can move freely at different angles and still enjoy a stable 3D effect.
3. Parallax Barrier Technology
Parallax barrier technology creates a sense of three-dimensionality by setting small barriers on the display screen to distribute images of different perspectives to the left and right eyes. Common formats of this technology include 2D-plus-Depth and Depth Image-Based Rendering (DIBR). The 2D-plus-Depth format combines 2D images with depth information to achieve a 3D effect through parallax barriers. DIBR reconstructs images from multiple perspectives through depth maps to achieve efficient 3D display.
4. Stereo Pixel Format
Stereo pixel format achieves naked-eye 3D display by allocating different pixels on the display screen. Representative technologies of this format include Super Multi-View Display and Integral Imaging. These technologies allocate images of different perspectives to different pixels through high-density pixel arrangement, allowing viewers to watch 3D images from multiple angles, bringing better stereoscopic sense and visual experience.
5. High Resolution and High Refresh Rate
High resolution and high refresh rate also play a vital role in naked-eye 3D display. High resolution can provide clearer and more delicate images, while a high refresh rate can reduce motion blur, making the 3D effect smoother and more realistic. Many advanced naked-eye 3D display devices use high-specification standards such as 4K and 8K resolutions and 120Hz and 240Hz refresh rates, further enhancing the audience’s visual experience.
In summary, the realization of the glasses-free 3D video display is inseparable from the support of multiple formats. Multi-view format, light field display, parallax barrier technology, stereo pixel format, high resolution, and high refresh rate are the main technologies. With the continuous advancement of technology, glasses-free 3D displays will become more popular, bringing more realistic visual enjoyment to the audience.
