Sample Tube Image Unwrapping for Accurate Label-Aware Analysis
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Solution Overview
Problem
Existing techniques for determining specimen state and measuring solution volume in biological samples face challenges with colored labels, leading to reduced color extraction accuracy due to misidentification of label colors and detection target regions.
Innovation Solution
A biological specimen analysis device that uses a fixed camera, light sources, and a controller to capture and process images of labeled biological sample tubes, employing image processing units to distinguish and separate label regions from detection targets, thereby improving color and volume measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic element is disposed between the magnetic disc and the magnetic head to prevent magnetic flux leakage, then magnetic flux leakage is reduced, but the device structure becomes more complex and the write gap cannot be made sufficiently small
Solution Approach 1:
The magnetic shielding function is extracted from a separate magnetic element and integrated into the magnetic head yoke itself. The yoke is designed with high magnetic permeability and specific geometric features (such as curved surfaces or recesses) that provide magnetic shielding without requiring additional components between the head and disc.
Solution Approach 2:
The magnetic shielding function is merged with the magnetic head yoke structure. The yoke simultaneously performs its primary function of guiding magnetic flux to the write gap and provides magnetic shielding by containing flux lines through its high permeability material and geometric design, eliminating the need for separate shielding elements.
2Measurement precision
If the write gap is made small to improve recording resolution, then recording resolution improves, but magnetic flux leakage increases and signal-to-noise ratio deteriorates
Solution Approach 1:
The magnetic head structure is designed with non-uniform magnetic permeability distribution. The yoke has higher magnetic permeability in regions where flux containment is needed, while maintaining appropriate permeability at the write gap for efficient flux transmission. This localized optimization allows small write gaps without sacrificing signal-to-noise ratio.
Solution Approach 2:
The magnetic head design incorporates geometric features (such as curved surfaces or varying thickness) that dynamically guide magnetic flux lines. The yoke geometry is optimized to concentrate flux at the small write gap while simultaneously containing flux lines to prevent leakage, achieving both high resolution and good signal-to-noise ratio.
3Reliability
If a magnetic shield is used to prevent magnetic flux leakage, then magnetic flux leakage is prevented, but the write gap cannot be made sufficiently small due to increased device complexity
Solution Approach 1:
The magnetic shielding function is extracted from a separate component and integrated into the yoke structure itself. The yoke is designed with high magnetic permeability and specific geometric features that provide magnetic shielding without requiring additional components, enabling smaller write gaps.
Solution Approach 2:
The magnetic head yoke is designed to perform multiple functions simultaneously: guiding magnetic flux to the write gap, providing magnetic shielding to contain flux lines, and enabling a small write gap for high resolution. This multi-functional design eliminates the need for separate shielding components.
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 device achieves high-accuracy detection of sample colors and volumes by distinguishing between label and detection target regions, reducing erroneous extractions and enhancing analysis precision.
Implementation Method 1
a magnetic head 14 to write data on the magnetic disc 12
Implementation Method 2
If a magnetic element is disposed between the magnetic disc and the magnetic head to prevent magnetic flux leakage
Implementation Method 3
a pickup head 15 to read data from the magnetic disc 12
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
An object of the present disclosure is to provide a technique capable of acquiring an analysis target region and color information without causing a decrease in extraction accuracy of the analysis target region due to erroneous extraction of a color of a colored label, measuring a solution volume of the specimen, and determining a specimen type. The biological specimen analysis device according to the present disclosure creates a developed view by cutting out a partial region from a color image of a biological sample tube and connecting the partial region along a circumferential direction of the biological sample tube, and extracts a detection target region from the developed view .