Dynamic Projection Mapping on Changing Object Surfaces
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Solution Overview
Problem
Conventional projection mapping methods are limited to fixed objects and require uniform shape or movement patterns, restricting their application to dynamic or changing surfaces, and necessitate pre-defined object placement and space constraints.
Innovation Solution
An image projecting device with an extracting unit for depth and color information, an image projection distortion information deriving unit, and a projecting unit that automatically adjusts image projection based on the changing surface of an object, allowing flexible projection on objects with varying shapes and positions without pre-defined placement or space limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional projection mapping methods are used on moving objects, then content can be projected on the object surface, but the object shape or movement pattern must be uniform and placement must be fixed
Solution Approach 1:
The system dynamically adapts to changing object surfaces by continuously capturing images and recalculating projection parameters. The projection mapping is no longer static but dynamically adjusts to object movement and shape changes, allowing versatile projection on moving objects without fixed placement requirements
Solution Approach 2:
The system uses feedback from captured images to automatically determine object surface characteristics and adjust projection parameters accordingly. This closed-loop approach enables the system to adapt to changing surfaces while maintaining projection accuracy, resolving the contradiction between adaptability and system complexity
2Adaptability or versatility
If projection mapping is performed on fixed objects, then image projection is stable, but the method cannot handle frequently changing surfaces or object configurations
Solution Approach 1:
The system performs preliminary actions by capturing images of the object surface before projection and pre-calculating the necessary projection parameters. This preparation step ensures that when projection occurs, the image is already precisely matched to the current object configuration, maintaining measurement precision while enabling flexibility
Solution Approach 2:
The system changes projection parameters (such as projection angle, distance, and image distortion) based on the captured object surface characteristics. By dynamically adjusting these parameters, the system achieves precise image matching on varying surfaces while maintaining adaptability to different object placements and configurations
3Ease of operation
If pre-defined object placement is required, then projection mapping is simpler, but user freedom and space flexibility are limited
Solution Approach 1:
The system performs self-service by automatically capturing object surface images, analyzing the geometry, and determining optimal projection parameters without requiring manual setup or pre-defined placement. This automation maintains ease of operation while enabling complete freedom in object placement and viewing position, as the system adapts to any configuration
Data Source
AI summary
A device for projecting an image on a surface of an object includes an extracting unit configured to extract information about a plurality of lines from an image of the object based on depth information and color information extracted from the image of the object; an image projection distortion information deriving unit configured to derive image projection distortion information about the surface of the object based on the information about the plurality of lines; and a projecting unit configured to project a content image on the surface of the object based on the derived image projection distortion information.