Infrared Image Vein Removal for Pulse Wave Measurement
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Solution Overview
Problem
Current pulse wave measurement methods face challenges in accurately detecting pulse waves due to motion interference and low sensitivity, particularly when using infrared images, as they require separate devices for vein recognition and pulse wave measurement, leading to low integration and large apparatus sizes.
Innovation Solution
An image information generation method that acquires and corrects infrared image sequences by registering vein patterns, removing vein regions to obtain image information from remaining regions, thereby improving pulse wave measurement accuracy and sensitivity, and integrates vein recognition and pulse wave measurement devices to share resources and reduce size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If infrared image sequences are used for pulse wave measurement, then measurement sensitivity is improved, but motion interference increases leading to reduced measurement precision
Solution Approach 1:
The patent extracts and removes vein pattern information from infrared images through image processing. By identifying and eliminating the vein pattern components that cause motion interference, the system retains only the arterial pulse wave information, thereby resolving the contradiction between using infrared images for improved sensitivity and avoiding motion interference for maintaining precision.
2Reliability
If separate devices are used for vein recognition and pulse wave measurement, then functional reliability is improved, but device complexity and size increase
Solution Approach 1:
The patent combines vein recognition and pulse wave measurement functions into a single integrated system. The same infrared imaging device captures both vein patterns and pulse wave information, and the image processing unit simultaneously performs both functions, thereby reducing device complexity while maintaining measurement reliability through unified data acquisition.
Solution Approach 2:
The infrared imaging device and image processing system are designed to perform multiple functions: vein pattern recognition and pulse wave measurement. This multi-functional approach allows a single device to replace what would traditionally require separate specialized devices, reducing overall system complexity while maintaining the reliability of both functions.
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
The method enhances the accuracy and sensitivity of pulse wave detection by eliminating motion errors and focusing on artery region changes, while integrating devices for miniaturization and improved performance.
Implementation Method 1
a wavelength of the near-infrared light source is near 760 nm
Implementation Method 2
a photo sensor is used to measure a change in intensity of light transmitted through a target part or light reflected from the target part
Implementation Method 3
a camera is used to acquire an optical image of a light source transmitted or reflected via the target part
Data Source
AI summary
The present disclosure relates to an image information generation method, a pulse wave measurement system and an electronic device. The method comprises: with respect to a target part, acquiring a first infrared image sequence, each infrared image in the first infrared image sequence including at least a vein pattern; by registering the vein pattern in each infrared image in the first infrared image sequence, correcting each infrared image in the first infrared image sequence, thereby obtaining the corrected first infrared image sequence; removing at least the vein regions from respective infrared images in the corrected first infrared image sequence, to obtain image information of remaining regions as image information for pulse wave measurement.