A seamless curved horseshoe-shaped image measuring 54×9 feet, with edge blending capabilities using 4 projectors.

New Delhi, India · Immersive Experience Center · 1 × BIT-EPF-104 + 4 projectors

BIT-EPF-104 Projection Blending System | Case Study: Immersive Showroom

By Bitvisus | September 16, 2026 |

Project Overview

In New Delhi, a premium immersive technology center required a central exhibit: a large-scale projection surface approximately 16.5 m wide and 2.7 m high, curved in a horseshoe (or U-shape). The goal was to provide a fully immersive experience: visitors inside the curve needed to see a single, continuous panorama without visible seams, brightness variations, or distortions at the bends.

To achieve this, four projectors were installed around the perimeter of the curved screen and combined using a single built-in edge-blending processor, model BIT-EPF-104. The system operates on the principle of "one input signal – four perfectly aligned output streams"; neither a PC, an operating system, nor an operator is required.

Task

Creating a perfect image on a curved surface using multiple projectors is a much more complex task than projecting onto a flat wall. The project involved solving four main challenges:
· Complex curved geometry: The horseshoe-shaped screen meant that each projector was aimed at the surface at its own angle, which would inevitably distort and misalign a flat image on the curve.
· Seamless blending of images from four projectors: It was necessary to combine the projections into a single continuous image, ensuring consistent brightness and color reproduction, and making the blending zones invisible.
· 24/7 unattended operation: In a public showroom, PC failures, loading delays, or the need for daily reboots are unacceptable – the system must operate continuously.
· Neat and compact installation: Space in the AV rack was limited, so a silent device with passive cooling was required, one that would not generate additional heat or noise in the visitor area.

Decision

The BIT-EPF-104 is an embedded processor for projection image stitching, built on a "one input - four output" architecture. The device receives a signal from a single video source and performs all the operations necessary to transform four separate projections into a single, seamless curved image:
· Geometric correction for each output — the image of each projector is individually deformed for precise alignment with the corresponding section of the curved screen.
· Edge blending — overlap zones are smoothly combined, eliminating visible seams and ensuring uniform brightness across the entire screen width (54 feet / ~16.5 m).
· Color and black level equalization — projector adjustment to ensure homogeneous color tone along the entire length of the curved surface.
· Embedded design with passive cooling — no operating system or moving parts; the device is designed for continuous 24/7 operation (e.g., in showrooms).
· Professional interfaces (HDMI / SDI / DP) — direct integration with media servers and live video signal sources.

Result

· Seamless 54 × 9 ft canvas — images from four projectors are blended into a single, distortion-free panorama, covering the horseshoe-shaped screen with imperceptible blend zones.
· Ultimate reliability (24/7 operation) — the embedded processor with passive cooling operates autonomously: no operating system, no failures, and no need for daily restarts by showroom staff.
· Simplified signal transmission scheme — a single BIT-EPF-104 device replaced an entire complex of equipment (PC, multiple graphics cards, and image stitching software), thereby reducing the number of potential points of failure.
· Impressive effect for visitors — precisely the high-class immersive first impression the client aimed for: smooth, bright, and absolutely seamless imagery.
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Frequently Asked Questions

Q: What is BIT-EPF-104 and what is it intended for?

A: The BIT-EPF-104 is an embedded processor for projection systems that supports geometric correction and edge-blending functions, operating on a "one-input to four-output" basis. The device receives a signal from a single video source and distributes it among four projectors, while performing geometric transformation and edge blending to form a unified, seamless, and geometrically accurate image on curved or non-standard shaped screens.

Question: Why should an embedded processor be used for a showroom instead of a PC-based solution?

A: Embedded processors, such as the BIT-EPF-104, are characterized by their compact, fanless design and are engineered for 24/7 operation without operator intervention. When used in public showrooms, they eliminate OS crashes, boot delays, and maintenance-related downtime: the display simply continues to function day after day, requiring no staff involvement.

Q: Is the BIT-EPF-104 model suitable for curved or U-shaped screens?

A: Yes. The BIT-EPF-104 device performs geometric correction for each output and edge blending when using multiple projectors—exactly what is required for curved or U-shaped screens. The image from each projector undergoes individual deformation, and the joints are smoothed, ensuring the continuity of the visual sequence across the entire curvature of the screen.

Q: How many projectors can one BIT-EPF-104 device support?

A: A single BIT-EPF-104 module supports up to four projectors (one-input-to-four-output configuration). To create larger immersive spaces that require more projectors, you can install multiple such modules or choose a BIT-EPF series model with a higher port density.

Q: What video inputs does the BIT-EPF-104 support?

A: The BIT-EPF-104 device supports common professional signal sources, including HDMI and SDI/DP inputs, which ensures its compatibility with media servers, players, and live broadcast signal sources frequently used in showrooms and professional audio and video (Pro AV) systems.
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