Underwater 3D Mapping Using Acoustic Positioning and Optical Texture
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Solution Overview
Problem
Current methods for generating high-resolution underwater maps are limited due to the high cost and inefficiency of combining data sources for accurate depth profiles and texture information, as satellite navigation and optical scanning are not feasible underwater.
Innovation Solution
A scanner system comprising a submersible with a camera and a 3D scanner mounted on a floating body or connected by a towing line, which generates high-resolution image data and three-dimensional relief maps, allowing for precise mapping of underwater terrain with referencing information for accurate positioning and texture integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If satellite navigation and optical scanning are used for mapping, then high-resolution data and efficient positioning are achieved, but these methods cannot be used underwater
Solution Approach 1:
The patent introduces an acoustic positioning system as an intermediary that enables satellite navigation functionality underwater. Acoustic signals serve as the mediator between the underwater environment and positioning requirements, allowing the system to achieve GPS-like positioning capabilities in the underwater domain where electromagnetic signals cannot penetrate.
Solution Approach 2:
The patent replaces the electromagnetic-based satellite navigation system with an acoustic-based positioning system for underwater operations. This substitution allows the system to maintain positioning efficiency while adapting to the underwater environment where electromagnetic waves cannot propagate effectively.
2Measurement precision
If multiple data sources are combined to generate high-resolution underwater maps, then accurate depth profiles and texture information are achieved, but the process becomes very expensive and complex
Solution Approach 1:
The patent combines multiple data sources including acoustic depth measurements, optical imagery, and positioning data into a unified mapping system. By integrating these diverse data streams through a coordinated methodology, the system achieves high-resolution underwater maps while managing the complexity through systematic data fusion rather than separate processing operations.
Solution Approach 2:
The patent creates a multi-functional mapping system that simultaneously captures depth information, texture data, and positioning information in a single integrated operation. This universal approach allows the system to generate complete underwater maps with both bathymetric and visual information without requiring separate specialized operations for each data type.
3Quantity of substance
If sonar is used for underwater scanning, then depth data can be collected, but the resolution and visual quality are insufficient for detailed mapping
Solution Approach 1:
The patent merges sonar depth scanning with optical imaging to create a composite mapping system. The sonar provides comprehensive depth data coverage while the optical camera captures high-resolution visual information. By combining these two data streams with complementary strengths, the system achieves both extensive coverage and fine visual detail that neither method could achieve alone.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the automatic generation of visually accurate and high-resolution underwater maps, addressing the limitations of existing technologies by providing detailed depth profiles and texture information efficiently, suitable for diving operations and water management.
Implementation Method 1
a camera (13) mounted in the submersible body for the generation of two-dimensional image data describing the bottom
Implementation Method 2
a 3D scanner (18, 19, 24) for the generation of three-dimensional information describing the bottom
Data Source
AI summary
The invention relates to a method of generating 3D data of an object, in particular for the generation of underwater maps. This method comprises the following steps:provision of two-dimensional image data of the surface of the object, such as e.g. the bottom of a body of water, together with reference informationprovision of a three-dimensional relief map of a predetermined area of the object or of the bottom of a body of water, andmapping of the two-dimensional image data as texture on the three-dimensional relief map by means of the reference information.