3D Model Formation Using Preliminary Recognition and Targeted Photography

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Solution Overview

Problem

Current methods face challenges in correlating 3D data from measuring instruments with site conditions, leading to difficulties in forming accurate three-dimensional models, especially when data is obtained from different perspectives like air and ground, resulting in image distortion and complicated model formation.

Innovation Solution

A model forming apparatus and method that includes a photographing section, image data storage, recognition section, and display section to recognize unmodeled parts and provide photographing instruction information, allowing photographers to supplement image data by adjusting photographing directions and positions, using previously obtained 3D model data as a starting point.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If 3D data is obtained from multiple perspectives (air and ground), then the completeness of the three-dimensional model is improved, but image distortion increases and model formation becomes complicated

Engineering Contradiction:

Improvecompleteness of three-dimensional modelVSAvoidcomplexity of model formation process

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by automatically generating a three-dimensional model from existing image data before photographing. This preliminary model serves as a guide to identify unmodeled parts and determine optimal photographing positions and directions, thereby simplifying the subsequent photographing process and reducing overall complexity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by using the generated three-dimensional model to guide the photographing process. The model provides information about which parts need additional photographing and from what positions and directions, creating a closed-loop system that reduces complexity by eliminating trial-and-error approaches.

Inventive Principle:

Principle #23Feedback

2Measurement precision

If image data is supplemented by photographing from multiple directions, then the accuracy of the three-dimensional model is improved, but the time required for photographing and processing increases

Engineering Contradiction:

Improveaccuracy of three-dimensional modelVSAvoidtime for photographing and processing

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary generation of a three-dimensional model from existing image data before the photographing step. This preliminary model identifies unmodeled parts and determines optimal photographing positions and directions, thereby reducing the time required for photographing and processing while maintaining high accuracy.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system performs self-service by automatically determining photographing positions and directions based on the three-dimensional model, eliminating the need for manual planning and reducing the time required for photographing and processing while maintaining high accuracy.

Inventive Principle:

Principle #25Self-service

3Manufacturing precision

If a detailed three-dimensional model is generated from scratch, then the precision of the model is improved, but the complexity and time consumption of the process increases

Engineering Contradiction:

Improveprecision of three-dimensional modelVSAvoidcomplexity of model formation process

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system performs preliminary generation of a three-dimensional model from existing image data before the photographing step. This preliminary model serves as a foundation that can be refined with additional photographing data, thereby reducing the overall complexity and time consumption while maintaining high precision.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system segments the model formation process into distinct steps: generating a preliminary model from existing data, identifying unmodeled parts, and selectively photographing only those parts. This segmentation reduces complexity by breaking down the overall process into manageable, targeted tasks.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS7986825B2Model forming apparatus, model forming method, photographing apparatus and photographing method

Publication Date: 2011.07.26 TOPCON CORPORATION

AI summary

The present invention provides a model forming apparatus that can simply and efficiently form a three-dimensional model of an object using previously obtained three-dimensional model data of the object as a starting point. The apparatus comprises a photographing section 110 for photographing an object 10, an image data storage section 130 for storing three-dimensional model data of the object, a display section 140 for displaying a three-dimensional model based on the three-dimensional model data of the object 10, a recognition section 150 for recognizing an unmodeled part of the object 10 based on the three-dimensional model data stored in the image data storage section 130, and a photographing instruction information section 160 for obtaining photographing instruction information related to photographing the unmodeled part. The photographing section 110 photographs the object 10 in accordance with the photographing instruction information obtained by the photographing instruction information section 160.