company news about How to Create a Curved Giant Screen Projection？

I. Preliminary Planning: Laying the Foundation for an Immersive Experience

The core of curved giant screen projection is "visual immersion" and "image integrity." Preliminary planning requires precise matching of space, needs, and technical parameters:

Space and Curve Design

Core Parameters: Determine the curvature based on the viewing distance (recommended to be 1.5-2.5 times the screen height). Common shapes include a 180° semi-circular arc (suitable for small to medium-sized spaces), a 270° ring (professional exhibition halls), and a 360° spherical shape (high-end venues). For example, for a 10-meter-wide viewing area, the optimal curvature radius for a 180° curved screen is approximately 6-8 meters.

Environmental Requirements: A dark environment (≤50 lux) avoids ambient light interference with contrast. The wall surface must be flat and unobstructed. Sufficient space must be reserved for projector installation (short-throw models require a distance of 0.5-1.5 meters from the screen).

Core Needs Positioning

• Scenario Adaptation: Exhibition halls/cinemas require a focus on stability (hardware fusion is preferred), while temporary events can prioritize software fusion (lower cost);
• Expected Effects: 3D effects require a metal screen and polarized projector, and interactive experiences need to reserve interfaces for motion-sensing devices (such as Kinect, radar sensors).
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II. Hardware Setup: Precisely Matched Technology Combinations

Hardware is the foundation of the curved giant screen, requiring coordinated adaptation of "screen - projector - auxiliary equipment":

Curved Screen Production and Selection

• Professional Solution: Custom-made seamless curved screen (avoiding physical seams), material options include metal screen (high gain, supports 3D) or soft screen (uniform color), select the gain value according to the projector brightness (commonly 1.2-2.8);
• DIY Solution: Cut silver-gray aluminum composite panel (cooked material) to the target size, bend it with the viewing distance as the radius, and use 7mm plywood to make a curved frame for fixation, costing only about 300 yuan, which can solve the problem of projector four-corner focusing.
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Projection Equipment Deployment

• Projector Selection: Use projectors of the same brand and model (ensuring consistent color and brightness). Short-throw/ultra-short-throw models can reduce shadow interference. Brightness should be calculated based on screen area (≥1500 lumens per square meter, doubled for outdoor use).
• Installation Specifications: Use a micro-adjustable gimbal bracket to ensure the projection center is aligned with the center of the screen's curvature. Adjacent projector edges should overlap by 15%-30% (for blending). For example, 24 curved surfaces require 24 projectors for precise coverage.
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Auxiliary Equipment Configuration

• Blending Core: Hardware blending unit (for large venues, high stability) or software (such as Mesaix, Vioso, suitable for small to medium-sized venues).
• Audio System: 360° surround sound speaker array (one speaker per 10 square meters recommended), using the main control system for audio-visual synchronization.
• Signal Transmission: Use HDMI 2.1 or fiber optic cables to avoid signal attenuation over long distances (signal amplifiers are required for distances exceeding 10 meters).

III. Software Debugging: The Key to Seamless Immersion

Debugging requires addressing three core issues: geometric correction, image blending, and color unification. It is recommended to allow 4 hours of calibration time for each projector:

Geometric Correction

• Basic Correction: Eliminate trapezoidal distortion using the projector's built-in functions or a blender.
• Curved Surface Compensation: For curved screens, use professional software (such as 3ds Max) to create a 3D virtual screen and adjust the vector grid to achieve non-linear deformation compensation, ensuring the image fits the curvature.

Image Blending

• Blending Band Settings: Define the overlapping area in the software (e.g., 20% horizontally), enable the Alpha blending algorithm to gradually increase the brightness of the overlapping area (50% at a single edge + 50% at adjacent edges = 100%), eliminating bright bands.
• Dynamic Optimization: Enable Edge Blending dynamic masking to handle edge transitions in moving images and avoid ghosting.

Color Calibration

• Basic Calibration: Measure each projector with a colorimeter to unify the color temperature (6500K recommended) and Gamma curve;
• Advanced Processing: Eliminate color banding using 3D LUT technology, and calibrate black level uniformity separately for dark scenes.

IV. Content Adaptation: Ensure accurate image matching for curved screens

Ordinary films require adaptation processing to achieve the best effect and avoid distortion and waste:

Content Production Workflow

• Mesh Drawing: Draw vector meshes channel by channel using Adobe Photoshop based on the number of projection channels, and adjust for uniform splicing when projected onto a real screen;
• Format Conversion: Use plugins such as RELens to convert circular frames (e.g., 9500x9500) into rectangular frames (e.g., 24000x1920), divide by channel, and render and output. The data volume of a single sequence frame must be controlled within a reasonable range (to avoid device overload);
• Interactive Adaptation: When combined with motion-sensing devices, embed motion capture response logic into the content to achieve real-time linkage between "viewer actions and screen changes".

Resolution Optimization: Single-channel resolution is recommended to be no less than 1920*1080. The total resolution after multi-channel splicing must match the screen size (e.g., a 2500㎡ giant screen requires 30K or higher).