G22-2025-Final Project

h1. Multi-Projector System

p=. _Team G22 ·  Semester 2025_

h2. *Contents*

* *[[About_our_Project|Project Details]]*

* *[[Group Members]]*

* *[[UML Diagrams]]*

* *[[Code]]*

* *[[Results]]*

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h2. Project Overview

*Issue:* When two projectors cast images onto the same flat screen, the overlapping portion becomes brighter than the surrounding area, causing uneven illumination.

*Method:* Identify where the projections intersect and generate smoothly varying alpha masks so that each projector’s contribution transitions gradually across the shared zone.

*Output:* A lightweight, reproducible prototype using Python and OpenCV that demonstrates the blending behavior on static images.

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h2. Objectives

* Clarify the problem and choose an achievable strategy before starting development.

* Build an alpha-blending workflow and refine it until the overlap becomes visually uniform from a standard viewing distance.

* Test the approach using a controlled set of images and videos, documenting parameters and results to ensure the experiment can be repeated.

*Success metric:* The blended region should show no noticeable edge, brightness jumps, or other distortion.

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h2. Scope & Operating Assumptions

* *System setup:* Two projectors aligned toward a flat projection surface, with their optical axes roughly perpendicular to the screen.

* *Content type:* Initial work focuses on still images, with possible extension to video later.

* *Overlap shape:* Treated as a roughly rectangular band where the blending weights decrease linearly from one projector to the other.

* *Calibration approach:* Prioritize simple, consistent procedures, introducing further correction only if visible imperfections remain.