Analyzing Apparatus Scattering Correction for Tissue Measurement
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Solution Overview
Problem
Existing endoscope apparatuses for determining biological substance concentration in tissue face errors due to scattering effects, which are not adequately considered in indicator calculation, leading to inaccurate results.
Innovation Solution
An analyzing apparatus that includes a light source, image sensor, and indicator calculation unit, which calculates a contribution factor for scattering effects, allowing for more precise determination of biological substance concentrations by accounting for spectral changes caused by scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If indicator calculation is performed based on color image data without considering scattering effects, then the calculation process is simple, but the measurement precision of the indicator value deteriorates due to scattering errors
Solution Approach 1:
The patent segments the indicator calculation process into two distinct stages: first calculating the indicator X based on color image data, then separately calculating the scattering contribution C using single-color image data from specific wavelength regions. This segmentation allows each calculation to focus on specific parameters, improving overall precision while maintaining manageable complexity through modular processing.
Solution Approach 2:
The patent introduces the scattering contribution C as an intermediary parameter that mediates between the raw color image data and the final corrected indicator value. By calculating C as a separate intermediate step using image data from wavelength regions where hemoglobin absorption is minimal, the system can compensate for scattering effects without directly complicating the primary indicator calculation.
2Reliability
If scattering effects are not considered in indicator calculation, then the calculation is faster and simpler, but the reliability of the measurement deteriorates due to scattering-induced errors
Solution Approach 1:
The patent performs preliminary action by capturing image data at multiple wavelength regions (including blue and green regions where hemoglobin absorption is minimal) before the final indicator calculation. This preliminary capture of scattering-characteristic data allows the system to compute the scattering contribution C in advance, ensuring reliable correction is available when calculating the final indicator value without adding significant time overhead.
3Measurement precision
If the apparatus uses only color image data for indicator calculation, then the device structure is simpler, but the measurement precision deteriorates due to uncorrected scattering effects
Solution Approach 1:
The patent transitions from processing only color image data (RGB dimensions) to incorporating image data from additional wavelength dimensions (blue and green regions). By adding this spectral dimension and calculating the scattering contribution C based on ratios of image data from these additional dimensions, the system achieves more precise concentration measurements while managing complexity through systematic multi-dimensional data processing.
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 apparatus reduces errors from scattering, providing a more accurate and precise indicator value for biological substance concentrations in tissue.
Implementation Method 1
an image sensor that generates color image data by capturing an image of biological tissue illuminated by light generated by the light source apparatus
Implementation Method 2
Colors in an image of biological tissue are influenced by the scattering of illumination light by the biological tissue
Data Source
AI summary
An analyzing apparatus according to an embodiment of the present invention includes: a light source apparatus; an image sensor that generates color image data by capturing an image of biological tissue illuminated by light generated by the light source apparatus; an indicator calculation unit that calculates an indicator X that indicates a feature amount Q of the biological tissue, based on the color image data; and a feature amount acquisition unit that acquires the feature amount Q based on the indicator X. The feature amount acquisition unit includes a contribution calculation unit that calculates a contribution C based on at least two colors of single-color image data included in the color image data, the contribution C of scattering on a spectral characteristic of the biological tissue. Also, the feature amount acquisition unit acquires the feature amount Q based on the indicator X and the contribution C.