Thermal Image Forehead Targeting for Accurate Fever Screening
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Solution Overview
Problem
Existing temperature measurement systems lack accuracy and efficiency, particularly in high-throughput settings like airports and public areas, making it difficult to distinguish between infected and normal individuals during disease outbreaks.
Innovation Solution
A system and method using thermal imaging to identify a target region, determine the highest temperature within that region, and mark the associated position, incorporating bounding boxes and reference images for precision, with mechanisms to verify and correct misjudgments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If thermal imaging is used for temperature measurement, then measurement efficiency is improved, but measurement precision deteriorates due to interference from misjudgment points
Solution Approach 1:
The patent segments the thermal image into multiple regions of interest (e.g., forehead, nose, cheeks) and processes each region separately. By dividing the measurement task into discrete segments, the system can apply region-specific analysis to identify and exclude misjudgment points while maintaining efficient bulk processing of multiple subjects, thus resolving the contradiction between measurement efficiency and precision.
Solution Approach 2:
The patent applies different processing strategies to different regions of the thermal image based on their specific characteristics. For example, the forehead region may be prioritized for temperature measurement while the eye region is excluded as a misjudgment point. This localized quality approach allows the system to maintain high measurement precision in critical areas while preserving overall measurement efficiency through automated region-specific rules.
2Productivity
If the measurement range is expanded to cover large areas, then measurement efficiency is improved, but measurement precision deteriorates due to temperature variations across different regions
Solution Approach 1:
The patent divides the large measurement area into multiple smaller regions of interest, each with its own temperature characteristics. By segmenting the broad measurement zone, the system can efficiently process large areas while maintaining precision through region-specific analysis, identifying the highest temperature point within each segment rather than averaging across the entire area.
Solution Approach 2:
The patent transitions from considering only spatial location to incorporating temperature value as an additional dimension for region identification. By analyzing the thermal distribution across the entire area and identifying regions with the highest temperature values, the system can automatically determine which regions to focus on for accurate temperature measurement, thus maintaining precision while expanding the measurement coverage.
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
Enhances temperature measurement accuracy by focusing on specific regions like the forehead and correcting misjudgments, improving overall measurement precision and reliability.
Implementation Method 1
obtaining a thermal image of an object acquired by a thermal imaging device
Data Source
AI summary
The present disclosure provides a system and method for temperature measurement. The method may include obtaining a thermal image of an object acquired by a thermal imaging device; identifying, in the thermal image, a first portion of the thermal image corresponding to a first target region of the object; determining, based on the first portion of the thermal image, a highest temperature of the first target region of the object; determining a target position in the first target region of the object, the target position being associated with the highest temperature; and marking, in a target image associated with the object, the target position.