Inter-reflection Compensation of Immersive Projection Display by Spatio-Temporal Screen Reflectance Modulation

Area of Science:

• Computer Vision
• Display Technology
• Optics

Background:

• Inter-reflection is a significant issue in immersive projection displays, degrading visual quality.
• Conventional compensation methods have limitations in effectively reducing inter-reflection intensity elevation.

Purpose of the Study:

• To propose a novel inter-reflection compensation technique for immersive projection displays.
• To improve compensation performance by spatially modulating screen reflectance.

Main Methods:

• Spatially modulating screen reflectance using photochromic compounds activated by ultraviolet (UV) light.
• Developing a computational model to optimize reflectance patterns for accurate appearance reproduction.
• Utilizing a UV LED array behind the screen for controlled UV irradiation.

Main Results:

• Demonstrated the feasibility of the proposed model through simulations and physical experiments.
• Confirmed the advantage of the proposed method over conventional inter-reflection compensation techniques.
• Successfully reduced undesirable intensity elevation caused by inter-reflections while maintaining target appearance intensity.

Conclusions:

• The proposed spatial reflectance modulation technique effectively compensates for inter-reflections in projection displays.
• The computational model provides an optimal reflectance pattern for enhanced visual fidelity.
• This approach offers a significant improvement over existing inter-reflection compensation methods.