Immersive Projection Calibration Using Virtual Feature Points

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Solution Overview

Problem

The immersive projection system is difficult to plan and arrange due to its complexity, requiring specialized integrators and involving multiple hardware and software tools, making it challenging to promote and set up rapidly.

Innovation Solution

A calibration method for immersive projection systems that includes setting virtual projection positions and image distortions, simulating projection regions, defining feature points, and adjusting positions and distortions using camera-assisted calibration to facilitate automatic screen division and content delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual planning and arrangement of immersive projection systems is performed, then system integration quality can be ensured, but the complexity and time required for setup increases significantly

Engineering Contradiction:

Improvesystem integration qualityVSAvoidplanning and arrangement complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system enables automatic calibration where the projection system self-adjusts its parameters through camera capture and processing. The calibration marks and automatic detection algorithms allow the system to calibrate itself without manual intervention, reducing complexity while maintaining quality through automated feedback loops

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system performs preliminary calibration by capturing images of calibration marks projected onto the screen before actual content delivery. This preliminary action establishes the geometric relationships and distortion characteristics in advance, simplifying subsequent operations and reducing setup complexity

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If multiple hardware and software tools are used for immersive projection system integration, then system functionality is enhanced, but the difficulty of planning and arrangement increases

Engineering Contradiction:

Improvesystem functionalityVSAvoidplanning and arrangement ease

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system merges multiple functions into an integrated calibration workflow. The camera device, processing unit, and projection devices work together as a unified system where calibration data flows automatically between components, reducing the operational burden despite enhanced functionality

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The calibration marks serve as an intermediary element that facilitates the interaction between the projection system and camera. These marks enable automatic detection of geometric relationships and distortion characteristics, simplifying the integration process while maintaining system versatility

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If experienced system integrators are required for immersive projection system setup, then installation quality is maintained, but the time and cost for deployment increases

Engineering Contradiction:

Improveinstallation qualityVSAvoiddeployment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The automatic calibration system performs quality assurance functions that previously required experienced integrators. The camera captures and processes calibration images to automatically determine projection parameters, maintaining installation quality through algorithmic precision while eliminating the need for expert manual intervention

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system replaces manual mechanical adjustment and visual calibration methods with automated optical detection and computational processing. The camera-based measurement system substitutes for human expertise, rapidly acquiring precise geometric data and calculating correction parameters without time-consuming manual procedures

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If automatic calibration methods are implemented, then setup time is reduced, but the complexity of the calibration process increases

Engineering Contradiction:

Improvesetup speedVSAvoidcalibration process complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system extracts the essential calibration information by projecting specific calibration marks and capturing them with a camera. This extraction approach isolates the critical geometric and distortion data from complex environmental factors, enabling rapid automatic calibration while maintaining simplicity in the core measurement process

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20250392687A1Immersive projection system and calibration method thereof

Publication Date: 2025.12.25 DELTA ELECTRONICS INC(CN)

AI summary

A calibration method of an immersive projection system, the calibration method includes: setting a virtual projection position and a virtual image distortion correction of a projection device; setting a virtual photographing position of a camera device; simulating a projection region of the projection device; defining a plurality of first feature points in the projection region; simulating a virtual shooting image including the projection region and the first feature points of the camera device; adjusting the virtual projection position and the virtual image distortion correction of the projection device based on the first feature points; and outputting a simulated overview profile including the virtual projection position and the virtual image distortion correction both being adjusted. An immersive projection system is also disclosed.