Projection Surface Sensing for Life-Size Human Image Display

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Solution Overview

Problem

Existing projection systems require cumbersome adjustments of installation circumstances to display human images in a desired size, such as life size, due to the lack of consideration for changing display sizes based on installation conditions.

Innovation Solution

A projection system and method that adjusts the size of human images based on projection surface dimensions by using a sensor to generate projection size information, obtaining and adjusting human images accordingly, and projecting the adjusted images onto a surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a projector is used to display human images, then the display size can be changed according to installation circumstances, but manual adjustment of installation circumstances is required to achieve desired image size

Engineering Contradiction:
Improvedisplay size adaptabilityVSAvoidinstallation adjustment convenience
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system automatically determines the projection surface size through sensor detection and independently calculates the appropriate human image size, eliminating the need for manual installation adjustment. The processing device autonomously performs the entire sizing process from detection to image generation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary detection of the projection surface size using a sensor before generating the human image. This advance measurement allows the processing device to pre-calculate the appropriate image dimensions, ensuring correct sizing is achieved automatically without requiring post-installation adjustment.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the projection surface size is detected automatically, then manual adjustment is eliminated, but additional sensors and processing are required

Engineering Contradiction:
Improveinstallation adjustment convenienceVSAvoidsystem component complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The processing device performs multiple functions: it processes the sensor output to detect projection surface size, calculates the appropriate human image size based on the detected dimensions, and generates the final image. This multi-functionality consolidates what could be separate components into a single integrated processing unit.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12542881B2Projection method and projection system
Publication Date: 2026.02.03 SEIKO EPSON CORP
  • US12542881B2 patent drawing
  • US12542881B2 patent drawing
  • US12542881B2 patent drawing

AI summary

A projection method includes generating projection size information representing a dimension of a first projection image displayed on a projection surface based on information output from a sensor, obtaining a first image including a first human image representing a person, generating a third image including a second image which is obtained by adjusting a size of the first human image based on the projection size information, and projecting the third image to thereby display a second projection image on the projection surface.