Projection System Asymmetric Graph Self-Positioning

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Solution Overview

Problem

Existing projector systems face challenges in accurately determining the effective projection area, especially in environments with reflective surfaces or non-planar surfaces, leading to misjudgment and increased setup time and cost when multiple projectors are integrated.

Innovation Solution

A projection system comprising a processing module, a projection module, and a photographing module that projects an asymmetric graph, captures and analyzes the image to determine consistent geometric configurations, and adjusts the effective photographing area for precise projection positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a projector projects images on non-planar or non-fixed curvature surfaces, then the projection can adapt to various projection environments, but the projector requires repeated manual adjustment of projection parameters to complete positioning

Engineering Contradiction:

Improveprojection environment adaptabilityVSAvoiderection time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system uses the projector's own projection function to generate a reference image, and uses its own photographing function to capture the projected image. The processing module automatically analyzes the captured image to determine projection parameters, enabling the system to self-position without external intervention or manual adjustment

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system captures the actually projected image and compares it with the reference image to automatically determine the effective photographing area and projection parameters. This closed-loop feedback mechanism eliminates the need for manual parameter adjustment by using the actual projection result to guide further positioning

Inventive Principle:

Principle #23Feedback

2Area of stationary object

If multiple projectors are integrated into one projection system to provide large-area projection, then the projection coverage is expanded, but the user needs to manually adjust each projector one by one, increasing erection time and cost

Engineering Contradiction:

Improveprojection areaVSAvoiderection time

Core Design Contradiction:

Area of stationary objectVSLoss of time

Solution Approach 1:

Each projector in the multi-projector system independently performs self-positioning by projecting its own reference image, capturing it with its own photographing module, and automatically determining its effective photographing area and projection parameters through image analysis, eliminating the need for sequential manual adjustment

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system projects a reference image containing an asymmetric graph before actual projection to pre-determine the effective photographing area and projection parameters. This preliminary positioning action is performed automatically for each projector, preparing the system for subsequent large-area projection without time-consuming manual setup

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If the projector determines effective projection area in environments with mirrors or reflective surfaces, then the projection can be performed in complex environments, but the projector may misjudge the effective projection area

Engineering Contradiction:

Improveprojection environment adaptabilityVSAvoideffective photographing area determination accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The reference image contains an asymmetric graph with distinctive geometric features. The processing module uses the unique geometric configuration of this asymmetric graph to identify and distinguish the actual projected image from reflected images, enabling accurate determination of the effective photographing area even in environments with mirrors or reflective surfaces

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The system uses the unique geometric configuration and visual characteristics of the asymmetric graph in the reference image to differentiate between direct projected images and reflected images. The processing module analyzes geometric consistency to identify the effective photographing area, effectively filtering out false images from reflective surfaces

Inventive Principle:

Principle #32Color changes

Data Source

PatentUS11146768B2Projection system and projection method

Publication Date: 2021.10.12 CORETRONIC CORPORATION

AI summary

A projection system and a projection method are provided. The projection system includes a processing module, a projection module and a photographing module. The projection module is coupled to the processing module, and projects a first projection image including a first asymmetric graph. The photographing module is coupled to the processing module, and captures at least a part of the first projection image based on a photographing range, so as to output a first photographed image including at least one second asymmetric graph. The processing module analyzes the first photographed image to determine whether the at least one second asymmetric graph is consistent with a geometric configuration of the first asymmetric graph. The processing module determines an effective photographing area according to one of the at least one second asymmetric graph that is consistent with the geometric configuration of the first asymmetric graph in the first photographed image.