Underwater Detection Contour Extraction for 3D Target Recognition
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Solution Overview
Problem
Existing underwater detection apparatuses struggle to distinguish target objects, such as schools of fish, clearly in three-dimensional images displayed on a two-dimensional screen, making it difficult for users to identify individual targets.
Innovation Solution
The apparatus includes a transmission transducer, reception transducers with multiple elements, and processing circuitry that performs beamforming and contour extraction, generating contour image data to be displayed alongside three-dimensional image data, allowing for the clear differentiation of target objects by extracting and displaying their contours.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If three-dimensional image data is displayed on a two-dimensional screen, then the underwater target objects can be visualized in three dimensions, but it becomes difficult for users to distinguish individual target objects one from another
Solution Approach 1:
The patent extracts and displays contours of target objects from the three-dimensional image data. By segmenting the visual information into contour outlines, the system enables users to distinguish individual target objects more easily while maintaining the three-dimensional visualization capability. The contour extraction separates the boundary information of each target object, making them visually distinguishable on the two-dimensional display screen.
2Measurement precision
If contour extraction is performed in multiple reception spaces, then the completeness of target object detection is improved, but the processing time and computational complexity increase
Solution Approach 1:
The patent performs contour extraction in multiple reception spaces adjacent to the first reception space where a target object is detected. This partial action approach ensures that the target object is completely captured even if it spans across multiple reception spaces, improving detection completeness. The processing is extended to adjacent spaces only when necessary, balancing the trade-off between detection completeness and processing time.
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
This solution enables users to easily distinguish and recognize individual target objects within three-dimensional images by superimposing contour data onto the three-dimensional images, improving visibility and recognition on a two-dimensional display.
Implementation Method 1
transmits underwater an ultrasonic beam as a transmission wave
Implementation Method 2
a reflection wave corresponding to a reflection of the transmission wave on the underwater target object
Implementation Method 3
each reception element generating a reception signal based on a reflection wave
Data Source
AI summary
An underwater detection apparatus is provided, which may include a transmission transducer, a reception transducer, and processing circuitry. The transmission transducer may transmit a transmission wave in an underwater transmission space. The reception transducer may include a plurality of reception elements, each reception element generating a reception signal based on a reflection wave comprising a reflection of the transmission wave on an underwater target. The processing circuitry may perform beamforming in each of a plurality of reception spaces based on the reception signals, generate a 3D image data of the target based on the beamforming performed in each reception space, and extract a contour of the target detected in at least one of the reception spaces, and generate a contour image data to be displayed along with the 3D image data on a display unit.