Dual-Wavelength Target Detection for Obstacle Ranging and Recognition
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Solution Overview
Problem
Current obstacle avoidance systems for intelligent self-propelled equipment, such as autonomous vehicles and drones, face challenges in rational path planning due to limitations in obstacle detection and ranging, particularly with low-height obstacles, leading to inefficient navigation and potential collisions.
Innovation Solution
A target detection method and system that utilizes a combination of a laser emitting device and a light-compensating device to capture images at different wavelengths, allowing for simultaneous distance measurement and object identification using a single imaging device, thereby improving obstacle recognition and path planning rationality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single imaging device is used for both ranging and identification, then device complexity is reduced and cost is lowered, but measurement precision and identification accuracy may be compromised due to wavelength-specific optimization
Solution Approach 1:
The patent implements periodic switching between laser emission mode and ambient light mode. The imaging device alternates between capturing laser-illuminated images for ranging and ambient light images for identification. This time-division multiplexing allows a single device to perform both functions sequentially, reducing hardware complexity while maintaining measurement precision through wavelength-specific processing for each mode.
2Measurement precision
If wavelength-specific imaging devices are used for laser ranging and ambient light identification, then measurement precision and identification accuracy are improved, but device complexity and system cost increase
Solution Approach 1:
The patent makes the imaging device universal by enabling it to perform both ranging and identification functions. Through wavelength-specific image processing, the same imaging device handles laser-illuminated images for distance measurement and ambient light images for target recognition. This multi-functionality eliminates the need for separate specialized devices, reducing system complexity while preserving accuracy through dedicated processing paths for each function.
3Reliability
If separate imaging devices are used for ranging and identification, then functional reliability is improved, but system compactness and ease of integration deteriorate
Solution Approach 1:
The patent merges the ranging and identification functions into a single integrated imaging device. By combining laser emission, ambient light capture, and dual-mode image processing in one device, the system achieves functional reliability through unified data processing while improving compactness and reducing integration complexity. The merged device processes both laser and ambient light images through a single optical path and processing pipeline.
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 approach enables accurate obstacle identification and distance measurement, enhancing the rationality of obstacle avoidance path planning and reducing the risk of collisions by multiplexing the imaging device for both ranging and identification tasks, while also improving system compactness and cost-effectiveness.
Implementation Method 1
a laser emitting device configured to emit a laser light of a first predetermined wavelength
Implementation Method 2
a light-compensating device configured to emit a light of a second predetermined wavelength
Implementation Method 3
an imaging device configured to capture a first image when the laser light of the first predetermined wavelength is emitted, and capture a second image when the light of the second predetermined wavelength is emitted
Data Source
AI summary
The present disclosure provides a target detection, apparatus, system, device and readable storage medium and relates to the technical field of computer vision. The method may include acquiring a first image captured by an imaging device, wherein the first image is captured when a laser light of a first predetermined wavelength is emitted; acquiring a second image captured by the imaging device, wherein the second image is captured when a light of a second predetermined wavelength is emitted, and the laser light of the first predetermined wavelength and the light of the second predetermined wavelength have a same wavelength or different wavelengths; obtaining a distance between a target object and the imaging device based on the first image; and identifying the target object based on the second image.