Dynamic Image Fusion for Infrared Thermal Imaging
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Solution Overview
Problem
Conventional image fusion methods in infrared thermal imaging devices suffer from detail loss in infrared thermograms and require manual adjustment of fusion ratios, making them complex to operate and not conducive to intelligent or popular use, especially when temperature differences are small.
Innovation Solution
An image fusion method and apparatus that acquire visible and infrared thermograms at the same scale, calculate a dynamic fusion ratio for each frame, and perform gray value fusion to enhance detail expression, automatically identifying temperature differences and optimizing the combination of infrared and visible images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional image fusion methods are used to enhance infrared thermograms, then the visibility of target objects can be improved, but the details of the infrared thermogram are lost
Solution Approach 1:
The patent applies dynamic adjustment of fusion ratios based on real-time temperature difference detection. The system calculates temperature differences between target objects and background, then dynamically adjusts the fusion ratio to balance visible light and infrared thermal information. This dynamic approach ensures that when temperature differences are small, more visible light is incorporated for better visibility, while when temperature differences are large, infrared information is prioritized to preserve thermal details.
Solution Approach 2:
The patent changes the fusion ratio parameter adaptively based on detected temperature differences. By monitoring the temperature contrast in the infrared thermogram and adjusting the fusion ratio accordingly, the system optimizes the balance between visible light and infrared data. This parameter adjustment resolves the contradiction by allowing high visibility when needed while preserving infrared detail information through selective fusion weighting.
2Measurement precision
If manual adjustment of fusion ratio is required for different scenes, then accurate target identification can be achieved, but the operation becomes complicated and requires professional knowledge
Solution Approach 1:
The patent implements self-service through automatic temperature difference detection and fusion ratio calculation. The system autonomously analyzes the infrared thermogram to detect temperature contrasts, calculates appropriate fusion ratios, and performs image fusion without requiring user intervention. This automation eliminates the need for manual adjustment while maintaining accurate target identification, thereby resolving the contradiction between precision and ease of operation.
Solution Approach 2:
The patent employs feedback mechanisms where the system continuously monitors temperature differences in the captured images and adjusts fusion parameters accordingly. The detected temperature contrast information feeds back into the fusion ratio calculation, creating a closed-loop system that automatically optimizes image fusion for each scene. This feedback-driven approach achieves accurate target identification while keeping the operation simple for end users.
3Adaptability or versatility
If visible light sensor is attached to assist identification, then target objects can be identified when temperature differences are small, but the infrared thermogram clarity is compromised
Solution Approach 1:
The patent dynamically adjusts the balance between visible light and infrared thermal information based on real-time temperature difference detection. When temperature differences are small, the system increases the weight of visible light information to enhance target identification capability. When temperature differences are large, the system prioritizes infrared thermal information to maintain thermogram clarity. This dynamic weighting strategy enables the system to adapt to different thermal conditions while preserving the reliability of infrared imaging.
Solution Approach 2:
The patent changes the fusion ratio parameter adaptively based on detected temperature differences. By monitoring the thermal contrast and adjusting the relative weight of visible light and infrared data accordingly, the system optimizes both target identification capability and infrared clarity. This parameter adaptation allows the system to leverage visible light assistance only when thermally necessary, while maintaining infrared thermogram quality as the primary reliable output.
Data Source
AI summary
An image fusion method, apparatus, and an infrared thermal imaging device, in which the method includes: acquiring a visible image and an infrared thermogram using the same scale at the same field of view; calculating a fusion ratio for each frame of the infrared thermograms; and performing a gray value fusion to each frame of the infrared thermograms and a corresponding frame of the visible images according to the fusion ratio.