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The differences and implementation process of different schemes for multi screen splicing fusion

Author:admin / Publication time:2022-04-28

In engineering projection, multi screen fusion is the main technology, which is required for exhibitions, lecture halls, science museums, and large-scale stages. The spherical projection derived from this technology, the ultra wide screen curved projection, has also caught people's attention in various scenes. So, how did multi screen fusion develop? How was it implemented?

The technology of large screen splicing has gone through three stages from its inception to the present: hard edge splicing, overlapping splicing, and edge fusion splicing. Hard stitching has obvious segmentation lines (i.e. physical stitching), which cannot achieve integrated panoramic display; Overlap refers to the overlapping of images projected by two projectors at the junction. However, this type of splicing clearly has the disadvantage of brightness overlap causing the splicing area to be too bright, which affects the achievement of seamless effect. Edge stitching solves the problem of excessive brightness at the splicing point, achieving a truly seamless effect and making the image a natural whole. Edge stitching system is a complex system engineering, and there are two fusion methods, namely hard fusion and soft fusion.

As the name suggests, hard fusion is the generation of fusion bands, reducing brightness, and using a fusion device to feather the grating. Hard fusion has high stability, and complex large screen environments such as control centers and command centers are mostly achieved through hard fusion. A pure hardware fusion device has been developed based on microcontroller technology. No matter what electronic product, chips are the most expensive, so compared to soft fusion, project funding will be higher. Software integration is actually the combination of computer software programs and graphics card functions for secondary development. It can be said that the essential difference between hard fusion and soft fusion is that one image is processed through multi screen fusion using a microcontroller fuser, while the other image is processed by matching computer firmware and software. There are many limitations to the actual use of software. Firstly, the configuration of the computer should be high, otherwise the software cannot be used and the application will crash without any response. Secondly, the software needs to be optimized to run smoothly in different computer system environments. Of course, this depends on the overall strength of the solution provider. Strong and experienced solution providers always have one or two of the latest fusion software. The cost of R&amp soft fusion is low, but it does not mean it will be much cheaper than hard fusion. Firstly, the projection market is relatively small, and there is not as much software development available; Company D. Hardware fusion devices are all patented technologies, and software that is more user-friendly is also relatively expensive. After the software provider produces the software, they provide it to the solution provider through a dongle, so the solution provider has a cost of obtaining it. A few thousand dollars per channel is not asking exorbitant prices. With a computer, the overall cost will naturally not be low. In the author's opinion, both options have high technical content, and the choice depends on your specific usage environment. For scenarios like sales halls where only one video is played repeatedly, soft fusion is sufficient, while for complex environments like command centers and report halls that require multiple devices and video switching, hard fusion must be used.


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