At Colosseum in Oslo, the cinema experience extends beyond the main screen. A 22-metre-wide screen sits beneath a dome measuring approximately 45 metres in diameter, giving specially created content room to spread overhead and surround the audience.

The dome is used for film promotions, advertising and events. Combined with the venue’s audio system, it turns the scale of this historic cinema into part of the experience, with visuals reaching far beyond the audience’s forward view.

VIOSO has been involved since the projection installation in 2017, when it also delivered playback technology. A later server upgrade included recalibration of the 16 dome projectors. Following the venue’s latest display system upgrade, VIOSO returned to help bring the projection into precise alignment.

A dome of this size presents a different calibration task from a flat cinema screen. Each projector covers part of a curved surface, and the individual images must fit that curvature while meeting their neighbours accurately.

The work centred on three practical requirements: correcting the projected geometry, matching image details between adjacent channels and managing the brightness of overlapping projections. These corrections address the distortion, displaced details and visible joins that can otherwise reveal the boundaries between projectors.

With a new display system in place, the dome also needed to work as a convincing visual extension of the main screen. Content designed for both surfaces depends on careful placement and a coherent overall image.

VIOSO supported the updated installation with VIOSO 7 calibration. Its camera-based workflow provides the warping, alignment and edge blending needed to combine multiple projector outputs on a curved surface.

Geometric correction adapts the images to the dome rather than leaving the content distorted by its curvature. Alignment brings neighbouring image sections into register, so details continue across projector boundaries. Edge blending controls the overlap regions, softening transitions between channels and helping the individual projections read as one image.

PIXERA media servers provide playback for the updated system. VIOSO’s role in this stage of the project was calibration: establishing the geometry and blends that allow the content to sit correctly across the dome.

The calibrated dome gives Colosseum an additional creative surface for trailers, commercials and presentations. Imagery can extend above the 22-metre main screen, while sound reinforces its scale and movement around the auditorium.

The same space supports events beyond the cinema programme. Media Direct Norge’s account of a Coop strategy launch at Colosseum shows how content created for the dome and main screen can be combined with surround sound for a corporate audience.

The result is an immersive presentation shaped by the architecture of the venue. VIOSO 7 calibration brings the separate projection channels together, helping this historic Oslo landmark deliver an experience that fills the space around its audience.

VIOSO worked with Nordisk Film on the Colosseum Oslo project.