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Related Experiment Video

Updated: Apr 30, 2026

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

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An iterative compensation approach without linearization of projector responses for multiple-projector system.

Isao Miyagawa, Yoshiko Sugaya, Hiroyuki Arai

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society

|April 25, 2014

Summary

This study presents a simple, robust method for compensating multiple-projector systems. It accurately distributes brightness without linearization or calibration, improving performance over existing techniques.

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Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

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Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

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Published on: February 12, 2014

Area of Science:

Computer Vision
Display Technology
Image Processing

Background:

Multiple-projector systems are complex to calibrate.
Existing compensation methods often require linearization and cooperation between projectors.
Photometric calibration is time-consuming and limits system flexibility.

Purpose of the Study:

To develop a novel, simple, and robust compensation method for multiple-projector systems.
To eliminate the need for projector response linearization and inter-projector cooperation.
To reduce the time and complexity associated with photometric calibration.

Main Methods:

Introduction of state equations to distribute brightness across projectors.
Feedback control of state equations using camera input.
Utilizing a color-mixing matrix incorporating projector response gradients for compensation.

Main Results:

Successful compensation of multiple-projector systems without linearization.
Elimination of the need for projector cooperation.
Significant reduction in calibration time and complexity.
Demonstrated superior compensation performance compared to existing methods.

Conclusions:

The proposed method offers a robust and efficient solution for multiple-projector system compensation.
This approach simplifies system setup and improves overall performance.
It provides a more effective alternative to traditional calibration techniques.