What Are the Dimensions of a Video Projection for an Art Show
How Forepart Pictures Re-imagined Renaissance Fine art in the Multimedia Age
How Front Pictures Represent Renaissance In Multimedia Age
How Forepart Pictures Represent Renaissance In Multimedia Age
How Front end Pictures Represent Renaissance In Multimedia Age
How Front end Pictures Re-imagined Renaissance Art in the Multimedia Age
When the opening of the new "Art Mall" shopping center was planned in Kiev, we were invited to participate as a studio of innovative technologies. The concept of the mall involves an fine art installation as the central content for the shopping space.
The Concept
We developed a couple of interactive installations, merely there withal was a desire to create something really outstanding and large-scale. Then nosotros offereded to transform a 1400 m2 gallery in a shopping center into a multimedia art space. We illuminated one wall of the gallery with 8 projectors to bear witness the concept, producing a small demo.
Engineering & Optimization
The thought was gladly accepted, and we started to develop the project documentation. We aimed to map the walls and columns of the gallery with the maximum resolution and effulgence possible, keeping toll-effectiveness in mind. We'd had experience of creating large-scale multimedia installations earlier, using a multi-projection setup. However, this particular project raised the bar. The project was supposed to embrace an area of 200 chiliad in width and 3.four g in height, resulting in an extreme resolution of 47,344 x 800 px, with a threescore:1 video aspect ratio. In addition, the pixel density had to exist much higher than in outdoor mappings.
Preliminary calculations showed that we might need 50-55 projectors. Normally, then many projectors required the use of at least five powerful media servers. However, prior to this project, we already had the experience of connecting upward to 32 projectors to a single media server. Nosotros used our proprietary Screenberry applied science to create an immersive visual experiences for events and shows. Our innovative fulldome projects are powered past Screenberry technology too.
Projectors' layout
Our engineers started looking for a fashion to connect all of the projectors to a single computer. In the kickoff we designed a server architecture, which would support up to 64 projectors. We assembled a powerful server with a 6-core Intel processor, 32 GB RAM, SSD RAID assortment (3GB per second, yeah we mean 3 gigabytes) and 2 latest NVIDIA Quadro GPUs (K6000) based on the Kepler technology.
All GPUs were synchronized with the assist of the NVIDIA Quadro Sync. We used fourteen Datapath brandish wall controllers to distribute the video betoken from 2 powerful graphics cards (with 8 outputs) to all 52 projectors.
eight Output video cables connected to two latest Nvidia Quadro GPUs (K6000)
Project setup in TouchDesigner
The next challenge was to brand TouchDesigner play back files with such an extreme resolution. Merely imagine, the video that nosotros wanted to play had a 6,848 ten 6,848 px (46.ix MP) resolution, and the output image would be 15,360 ten iv,800 px (73.seven MP). Nosotros were unsure if TouchDesigner, although a versatile slice of software, could handle information technology. As nosotros knew, no ane had done information technology before. We installed the latest version, which supports 64-bit systems, and started experimenting with information technology. The back up team was prompt and effecient in helping the states with issues that arose in the process.
The next step was to configure GPUs. To achieve maximum performance and smooth video playback, we had to go through numerous combinations of settings and parameters. The output module in TouchDesigner was also reworked several times to achieve target operation. Nosotros heavily used Python, which was added in the latest version of TouchDesigner, to plan the logic of the playback and scale modules.
Geometry slices for projection
To achieve perfect projector alignment, the output pipeline included non merely video playback, but also geometric distortion, blend effects and colour correction, which were applied to the video stream in real time. After 2 months of fine-tuning and a number of experiments, we accomplished a fully synchronized and smooth playback.
TouchDesigner UI mapped on the walls
Using the TouchOSC app on the iPad, nosotros designed an intuitive UI to control calibration and playback.
Hardware setup
In this projection we used ultra-short throw projectors with a 0.49 ratio, so that visitors would not cast shadows on the walls. However, the specifics of broad-angle lenses is that they take no zoom or lens shift. So each projector had to be mounted with centimeter-level precision. Exact technical drawings allowed u.s. to hang the truss and mount the projectors correctly.
Video cables were also laid out in such a manner that power cables would non cause interference. The full length of the cables exceeded 1800 meters.
Content cosmos
Another pace was to create a template for our video designers.Based on our projection layout tech drawing, we created a UV map where the exact position of each pixel on the map corresponded to the projected pixel on the wall.The UV map (or frame) had an extreme resolution of 6,848 x vi,848 px, or 46.ix MP for each frame. Furthermore, the full length of the video was 43 minutes or 64,500 frames, and thus we had to upgrade our file server, adding another 20TB of deejay space and 10Gbit cards to the server and workstations to ensure an effective workflow.
UV template for video production with total dimension frame 6848 x 6848 pixels
In Forepart Pictures we telephone call this procedure "spatial video pattern". Unlike 3D mapping, we project the content onto a circuitous surface, which consists of a variety of planes with different angles. Not all of the surfaces are visible from all positions, adding some other level of complexity to the process of content cosmos.
In improver to playback, we used TouchDesigner to create a virtual 3D stage where designers could preview their work in existent time. They could move a virtual photographic camera inside the set up to observe the content the way visitors would see it from dissimilar angles and positions, while walking effectually. Our squad and the client could experience "The Renaissance" even earlier the real gallery was actually congenital.
Virtual 3D stage
Exhibition was opened on 29th March at Fine art Mall's "A-gallery" and become a great attraction for the whole urban center. The "Renaissance: the Age of Genius" is getting a lot of positive feedback from visitors. The client was impressed and now nosotros are working on the next big project – the "Alice in Wonderland" exhibition. Our tests have shown that nosotros can successfully connect up to 64 projectors to a single media server, which will let us to brand the side by side exhibition even more spectacular!
Source: https://frontpictures.com/backstage/multimedia-exhibition-space-a-gallery-making-of
0 Response to "What Are the Dimensions of a Video Projection for an Art Show"
Postar um comentário