[ Huaqiang Security Network News ] At present, China's large-screen display technology is advancing by leaps and bounds, and the application of large-screen splicing is also becoming more and more widespread. With the profit of single-selling projectors getting lower and lower, many dealers are considering starting the road of engineering integration. Considering that many new engineering companies have just finished the large-screen splicing project, here will also introduce some of the knowledge of large screens. This article mainly seamlessly splicing and explaining techniques. 
First of all, we must understand that large-screen splicing is a general concept. At present, there are two main types of large-screen splicing, one is the traditional display wall hard splicing technology, and the other is the seamless splicing technology using edge fusion technology. The display wall hard splicing technology mainly adopts multiple rear projection splicing wall methods, such as CRT rear projection display wall, LCD rear projection display wall, DLP rear projection splicing wall and plasma display wall, etc. This splicing technology can achieve the minimum splicing gap. 0.5mm, because the gap is very small, so everyone is also called "seamless" splicing, but there is actually a gap, the real seamless splicing technology is seamless splicing technology.
With the continuous integration and development of display technology and control technology, in the high-end engineering field, large-screen image display through splicing has been widely used, it brings large picture, multi-screen display and clear, realistic The display effect has greatly improved the efficiency of monitoring, security, conference, simulation and other fields, and promoted the rapid progress of the technical level of these industries.
In recent years, with the development of software and hardware technology, seamless splicing technology has entered a very mature stage, and has been widely used in command and control, virtual simulation training, industrial manufacturing design, scientific research and complex decision-making processes, in the exhibition, Applications in the fields of visual entertainment, advertising, etc. are also becoming more common.
Seamless splicing technology is a special and demanding projection display application, which can realize the splicing technology in which multi-screen images are fused together and the splicing gap is minimized to completely coincide. Seamless stitching technology not only requires a complete super-large screen, but also has special requirements for projections used to project oversized images.
At present, seamless integration of ultra-large screens can be achieved by high-end projectors with built-in seamless splicing technology or by external seamless splicing processors. High-end projectors with built-in seamless stitching technology include ChristieMatrixS+2K, Christie Highlighter DS+60, BARCORLMG5 “Performer†projector, 3Dperception SX25+ projector, Panasonic PT-DW7000E, etc. (Details: Recommended for high-end professional projectors for large-screen splicing); external seamless splicing processor mainly includes Norwegian 3Dperception fusion generation controller, Christie edge fusion processor-Imager, VISTASPYDER342 soft edge splicing controller, Weijing FreeMedia multi-channel digital media player, etc. (Details reference: Edge fusion processor recommended for seamless stitching).
The development of seamless splicing technology has experienced three stages: pure hardware fusion technology, pure software fusion technology and software and hardware fusion technology.
Pure hardware fusion technology fuses images through optical shading processing. Pure software fusion technology completes image fusion through electronic circuit processing. Software and hardware fusion technology refers to both optical shading fusion processing and electronic fusion processing.
Since the hardware fusion can better deal with the black balance of the fused image, and the software fusion can better deal with the white balance of the image, the combination of the two software and hardware fusion technologies can perfectly realize the true reproduction of the fused partial color image.
In terms of splicing effect, the seamless splicing technology has also experienced three stages of development: hard edge splicing, overlapping splicing and soft edge splicing.
The hard edge splicing has obvious dividing lines (that is, physical seams), and the integrated display of the panorama cannot be realized; the overlapping splicing refers to overlapping the images thrown by the two projectors in a superimposed manner at the merging, but the splicing obviously exists. The disadvantage of the over-bright area due to the superposition of brightness is affected by the flattening, which affects the realization of the seamless effect.
With the continuous updating of the products, the soft-edge fusion splicing through the edge fusion technology not only achieves the complete fusion of the two sides, but also eliminates the over-bright areas caused by the overlapping splicing, and the soft-edge fusion splicing can adapt to the plane, the cylinder, Splicing of various curved shapes such as spheres has wider applicability. Whether the soft edge fusion splicing technology is currently the mainstream technology is also the future development direction.
With the continuous integration and development of display technology and control technology, in the high-end engineering field, large-screen image display through splicing has been widely used, it brings large picture, multi-screen display and clear, realistic The display effect has greatly improved the efficiency of monitoring, security, conference, simulation and other fields, and promoted the rapid progress of the technical level of these industries.
In recent years, with the development of software and hardware technology, seamless splicing technology has entered a very mature stage, and has been widely used in command and control, virtual simulation training, industrial manufacturing design, scientific research and complex decision-making processes, in the exhibition, Applications in the fields of visual entertainment, advertising, etc. are also becoming more common.
Seamless splicing technology is a special and demanding projection display application, which can realize the splicing technology in which multi-screen images are fused together and the splicing gap is minimized to completely coincide. Seamless stitching technology not only requires a complete super-large screen, but also has special requirements for projections used to project oversized images.
At present, seamless integration of ultra-large screens can be achieved by high-end projectors with built-in seamless splicing technology or by external seamless splicing processors. High-end projectors with built-in seamless stitching technology include ChristieMatrixS+2K, Christie Highlighter DS+60, BARCORLMG5 “Performer†projector, 3Dperception SX25+ projector, Panasonic PT-DW7000E, etc. (Details: Recommended for high-end professional projectors for large-screen splicing); external seamless splicing processor mainly includes Norwegian 3Dperception fusion generation controller, Christie edge fusion processor-Imager, VISTASPYDER342 soft edge splicing controller, Weijing FreeMedia multi-channel digital media player, etc. (Details reference: Edge fusion processor recommended for seamless stitching).
The development of seamless splicing technology has experienced three stages: pure hardware fusion technology, pure software fusion technology and software and hardware fusion technology.
Pure hardware fusion technology fuses images through optical shading processing. Pure software fusion technology completes image fusion through electronic circuit processing. Software and hardware fusion technology refers to both optical shading fusion processing and electronic fusion processing.
Since the hardware fusion can better deal with the black balance of the fused image, and the software fusion can better deal with the white balance of the image, the combination of the two software and hardware fusion technologies can perfectly realize the true reproduction of the fused partial color image.
In terms of splicing effect, the seamless splicing technology has also experienced three stages of development: hard edge splicing, overlapping splicing and soft edge splicing.
The hard edge splicing has obvious dividing lines (that is, physical seams), and the integrated display of the panorama cannot be realized; the overlapping splicing refers to overlapping the images thrown by the two projectors in a superimposed manner at the merging, but the splicing obviously exists. The disadvantage of the over-bright area due to the superposition of brightness is affected by the flattening, which affects the realization of the seamless effect.
With the continuous updating of the products, the soft-edge fusion splicing through the edge fusion technology not only achieves the complete fusion of the two sides, but also eliminates the over-bright areas caused by the overlapping splicing, and the soft-edge fusion splicing can adapt to the plane, the cylinder, Splicing of various curved shapes such as spheres has wider applicability. Whether the soft edge fusion splicing technology is currently the mainstream technology is also the future development direction.
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