Wiki » History » Revision 27
Revision 26 (Anderson PHILLIP, 10/18/2025 02:04 AM) → Revision 27/49 (Anderson PHILLIP, 10/18/2025 02:14 AM)
h1(#Top). Multi-Projector System — Project Wiki h2. Overview Our goal is to build a two‑projector system that displays seamless still images on a flat screen, where the projected areas overlap and must be blended. Implementation is in Python (OpenCV). Prior to implementation, we document the problem and a viable solution approach. h3. Problem background (why blending matters) Overlapped regions become over‑illuminated; alpha‑blending with proper masks evens illumination across seams. (See slides: “What is alpha‑blending?”) [[Alpha‑blending]] h2(#Scope). Scope & assumptions * Start from a *planar* screen with **two** projectors; optical axes *perpendicular* to the screen. * Work with **still images** first (not video). * Expected overlapped area is approximately rectangular; target a *linear* drop of mask intensity from 1→0 across the overlap. * Use Python + OpenCV; iterate from simple to refined. (From project brief and 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. (From “Objective”, “Skills required”, and problem formulation.) h2(#Key-Concepts). 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). Team & roles |_. Roles |_. Members | | Advisor | [[Members/Great-Gilbert-Soco|Great Gilbert Soco]] | | PL, Project Leader | [[Members/Koki-Hamamura|Koki Hamamura]] [[Members/Koki|Koki]] | | PM, Project Manager | [[Members/Noah-Larson|Noah Larson]] [[Members/Noah|Noah]] | | Redmine – supporter of PM | [[Members/Nonoka-Ohama|Nonoka Ohama]] [[Members/Nonoka|Nonoka]] | | Developers | [[Members/Jiajun-Deng|Deng]], [[Members/Great-Gilbert-Soco|Great Gilbert Soco]] [[Members/Deng|Deng]], [[Members/Great-Gilbert-Soco|Gilbert]] | | Doxygen Leader | [[Members/Amirul-Haziq-Bin-Airol-Hairrie|Haziq Bin Airol Hairrie Amirul]] [[Members/Amirul-Haziq-Bin-Airol-Hairrie|Hachiko (Haziq)]] | | Doxygen, commenters | [[Members/Jordan-Keiwein-Lay|Jordan Keiwein Lay]], [[Members/Hnin-Ei-Shwe-Yee|Hnin Ei Shwe Yee]] [[Members/Jordan|Jordan]], [[Members/Hazel|Hazel]], [[Members/Sota|Sota]] | | Wiki Leader | [[Members/Phillip-Anderson|Phillip Anderson]] [[Members/Great-Gilbert-Soco|Gilbert]] | | Wiki Developers | [[Members/Wing Sum Tang|Wing Sum Tang]], [[Members/Sota-Yatsugi|Sota Yatsugi]] [[Members/Zoya|Zoya]], [[Members/Phillip-Anderson|Phillip Anderson]] | | Jira Research Team | [[Members/Zhi-Jie-Yew|Zhie Jie Yew]], [[Members/Zack|Zack]], [[Members/Phillip-Anderson|Phillip Anderson]] | h2(#Alpha-blending). Alpha‑blending (notes) Overlapped areas without masks are brighter; masks weight each projector so the sum equals uniform brightness. Smooth masks eliminate boundary scratches; see examples in the slides. h2(#Links). Project links * Requirements & assumptions: this page, sections [[#Scope]] and [[#Objectives]]. * Design notes & diagrams: (create) [[Design-Notes]] * Experiments log & photos: (create) [[Experiments-Log]] * Code repo / file list: p=. _Back to top:_ [[#Top|↑]]