WiMi Hologram Cloud Inc (WIMI)

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WIMI (NASDAQ: WIMI) realizes the technology of breaking the crosstalk limitation of dynamic holography through the orthogonality of high-dimensional random vectors.

Source
https://finance.sina.com.cn/tech/roll/2023-05-05/doc-imystpau3413832.shtml

May 5, 2023

Digital holography is the most promising technological path to achieve true 3D spatial imaging, but combining complex digital images with full depth control remains a challenging problem. With the development of technology, we have made great technological progress in 3D holographic projection, but the available methods are still limited to creating images on a few planes, only with narrow depth of field or low resolution. True 3D holography also requires full depth control and dynamic imaging, capabilities currently hampered by high crosstalk. Its applications are limited due to issues such as depth control and high crosstalk. One of the key issues is how to store all the information needed to render complex 3D images in 2D without crosstalking projected images at different depths.

The current holographic technology is affected and limited by data crosstalk because the holographic image information is compressed on one plane, which means that when we are ready to project and image images with different depths, these images will interfere with each other and generate crosstalk. In order to solve this problem, WIMI (NASDAQ: WIMI) researched a new method, that is, the technology of realizing crosstalk control of dynamic holography through the orthogonality of high-dimensional random vectors.

The technique works by pre-shaping the wavefront during Fresnel diffraction. That is, for each depth, a high-dimensional random vector is multiplied with the image, thus introducing a random phase for each depth. In this process, a spatial light modulator is used to create a pre-shaped wavefront with random phase. In this way, images at each depth are preprocessed into a complex amplitude multiplied with a random phase, which is introduced to eliminate crosstalk due to the near-orthogonality of large-dimensional random vectors. Therefore, when performing holographic image reconstruction, the information of each depth is presented independently without interference. This enables 3D projection with full depth control while eliminating crosstalk limitations. Another critical step is converting Fresnel holograms to Fourier holograms. Fourier holography can be achieved by pre-shaping the wavefront so that the Fresnel diffraction is locally reduced. Fourier holography allows the introduction of random phases for each depth without changing the image projection at a specific depth, thus eliminating the problem of crosstalk. Therefore, large-volume 3D images with high density, full depth control, and dynamic 3D projection capabilities can be generated using this method.

WIMI holography breaks the crosstalk limitation of dynamic holography through the orthogonality of high-dimensional random vectors. This technology can include random phases for each depth without affecting the image projection at a specific depth, eliminating the Crosstalk due to near-orthogonality. The resulting Fresnel hologram, or Fourier hologram, can then be transferred to a suitable holographic medium, and then a 3D image can be generated by shining a laser on the holographic medium. During this process, the light intensity and angle of the projection need to be adjusted to produce the desired 3D effect. If dynamic projection is required, it can be achieved by adding control circuitry to the laser and optics. This technique breaks the crosstalk limitation of dynamic holography by combining wavefront preshaping with high-dimensional random vectors. This approach enables high-density, large-volume 3D images with full depth control and dynamic projection capabilities.

WIMI Holography (NASDAQ: WIMI) uses the orthogonality of high-dimensional random vectors to break the crosstalk limitation of dynamic holography, which is an innovative solution. Through this technology, full depth control and dynamic projection capabilities can be achieved, while eliminating random vectors due to large dimensions can provide more advanced, accurate, and intuitive images and experiences for multiple industries. With the continuous development and improvement of this technology, it is believed that it will play a more important role in more fields.