Endoscope Display Color Correction System
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Solution Overview
Problem
Endoscope images often deviate from true colors due to focusing, white balance, and light source issues, leading to misjudgments and surgical errors in medical procedures.
Innovation Solution
A display correction system for endoscopes that captures image values from a standard color card, calculates color gamut values, and adjusts compensation parameters to ensure displayed colors match true colors, with the option to store these values for different endoscopes and monitors, allowing for precise color correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a self-illuminating source is arranged on the endoscope lens to illuminate internal organs, then the internal organs can be observed in the dark body cavity, but the displayed color of the internal organs differs from the true color due to focusing, white balance and light source issues
Solution Approach 1:
The system captures the actual color values of a standard color card through the endoscope and compares them with the known standard chromaticity values. Based on this comparison, it calculates compensation values and adjusts the chromaticity parameters of the displayed image to correct color deviations caused by the self-illuminating source, focusing issues, and white balance problems.
Solution Approach 2:
The system establishes a feedback loop by continuously comparing the captured chromaticity values of the color card with the standard chromaticity values, calculating the deviation, and applying compensation adjustments to the display output. This closed-loop approach ensures that the displayed colors accurately reflect the true colors of the internal organs despite the challenging lighting conditions.
2Adaptability or versatility
If multiple monitors are arranged in the clinic to correspond to different kinds of endoscopes, then each endoscope can have its dedicated display, but the placement space is consumed
Solution Approach 1:
The system makes a single monitor universal by enabling it to work with different types of endoscopes. It captures images from various endoscopes, analyzes their specific color characteristics, and applies appropriate compensation values for each endoscope type. This allows one monitor to serve multiple functions and accommodate different endoscope models without requiring separate dedicated displays for each.
3Measurement precision
If manual adjustment of color parameters is performed for different monitors and endoscopes, then color accuracy can be optimized, but human effort and adjustment time are increased
Solution Approach 1:
The system performs self-calibration by automatically capturing images of a standard color card, comparing the captured chromaticity values with known standard values, calculating the necessary compensation values, and applying the corrections without requiring manual intervention. This self-service approach eliminates the need for operators to manually adjust color parameters for different monitors and endoscopes, significantly reducing adjustment time and human effort while maintaining high color accuracy.
Data Source
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AI summary
A display correction system applied for an endoscope is provided which includes a color checker, a light-shielding tank, an endoscope has a lens that is sleeved in the light shielding tank and the lens is disposed toward the view window, the lens of the light-shielding tank is sequentially aligned the color block of the color checker through the view window to capture the image of the color block. The monitor has a captured image window which is provided for displaying the image of the color that is captured by the endoscope. The display correction device is provided for correcting the image signal from the color block that is transmitted by the endoscope, such that the image is displayed on the monitor is corresponding to the image of the electrical signal, and the color of the image on the monitor is the same as the true color of the color block.