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Revision 36 (Anderson PHILLIP, 10/18/2025 02:54 AM) → Revision 37/49 (Anderson PHILLIP, 10/18/2025 04:22 AM)
h1. Multi‑Projector Blending h1(#Top). Multi-Projector System — Project Wiki p=. _Team G11 · Python / OpenCV · Semester 2025_ h2. Project Overview * Display one Our goal is to build a two-projector system that displays seamless still image images on a *flat* screen using *two* projectors with an overlapped area. * Equalize brightness in flat screen, where the projected areas overlap with alpha‑blending so seams disappear. * Prototype and must be blended. Implementation is in Python (OpenCV); refine only as needed. --- h2. Objectives # Describe (OpenCV). Prior to implementation, we document the problem and a feasible viable solution path *before* coding. # Build a minimal alpha‑blending prototype and iterate until seams vanish. # Provide before/after evidence on multiple test images. # Keep the workflow and calibration reproducible. approach. --- Problem background (why blending matters) Overlapped regions become over-illuminated; alpha-blending with proper masks evens illumination across seams. (See [[Alpha-blending]].) h2. h2(#scope). Scope & Assumptions assumptions * Planar screen; two Start from a *planar* screen with **two** projectors; optical axes ≈ perpendicular *perpendicular* to the screen. * Still images Work with **still images** first (video later if time permits). (not video). * Overlap Expected overlapped area is roughly approximately rectangular; target a *linear* drop of mask intensity falls *linearly* from 1→0 across the band. overlap. * Minimal calibration; fine‑tune only if artifacts are visible. Use Python + OpenCV; iterate from simple to refined. (From the simplified requirements.) --- h2(#objectives). Objectives * Describe the problem and identify a potential solution before coding. * Apply geometric reasoning (lines/planes in 3D; ray-plane/ray-cylinder intersections) as needed. * Prototype masking that yields smooth, artifact-free blending. h2. Key concepts & references * [[Alpha-blending]] — concept and examples. * Forward (screen→projector) and inverse (projector→screen) ray tracing for overlap detection and mask generation. * “Smooth” masks prevent scratches along mask boundaries. h2. Team & roles |_. Roles |_. Role |_. Members | | Advisor | [[Members/Great-Gilbert-Soco|Great Gilbert Soco]] | | PL, Project Leader | [[Members/Koki-Hamamura|Koki Hamamura]] | | PM, Project Manager | [[Members/Noah-Larson|Noah Larson]] | | Redmine Support – supporter of PM | [[Members/Nonoka-Ohama|Nonoka Ohama]] | | Developers | [[Members/Jiajun-Deng|Jiajun Deng]], [[Members/Great-Gilbert-Soco|Great Gilbert Soco]] | | Doxygen Leader | [[Members/Amirul-Haziq-Bin-Airol-Hairrie|Amirul Haziq Bin Airol Hairrie]] | | Doxygen Commenters Doxygen, commenters | [[Members/Jordan-Keiwein-Lay|Jordan Keiwein Lay]], [[Members/Hnin-Ei-Shwe-Yee|Hnin Ei Shwe Yee]] | | Wiki Leader | [[Members/Phillip-Anderson|Phillip Anderson]] | | Wiki Developers | [[Members/Wing-Sum-Tang|Wing Sum Tang]], [[Members/Sota-Yatsugi|Sota Yatsugi]] | | Jira Research Team | [[Members/Zhi-Jie-Yew|Zhi Jie Yew]], [[Members/Phillip-Anderson|Phillip Anderson]] | h2. Project links * Requirements & assumptions: this page — [[#scope|Scope & assumptions]] and [[#objectives|Objectives]]. * Design notes & diagrams: [[Design-Notes]] * Experiments log & photos: [[Experiments-Log]] * Code repo / file list: (add link later) p=. _Back to top:_ [[#Top|↑]]