Superimposed White and Infrared Image Luminance Balancing
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Solution Overview
Problem
Existing medical image processing methods face issues with achieving a suitable balance between white and infrared images, leading to excessive brightness or noise in superimposed images due to improper adjustment of light sources or image processing gains, especially before the injection of phosphors.
Innovation Solution
An image processing apparatus and method that includes separate first and second light sources for white and near-infrared excitation, along with corresponding imaging and processing units, and a control unit to adjust luminance based on superimposed image information, ensuring balanced luminance levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light amount of the near-infrared light source or the gain of image processing is excessively increased before phosphor injection, then the infrared image becomes brighter, but noise in the superimposed image increases
Solution Approach 1:
The control unit adjusts the light amount of the near-infrared light source and the gain of image processing based on luminance information from the superimposed image, creating a feedback loop that dynamically optimizes brightness while suppressing noise
Solution Approach 2:
The system dynamically adjusts the light amount and gain parameters in real-time based on the injection state of phosphor, transitioning from a static fixed-parameter approach to a dynamic adaptive approach that responds to changing conditions
2Object-affected harmful factors
If the light amount of the near-infrared light source or the gain of image processing is not excessively increased before phosphor injection, then the infrared image is not excessively bright, but the brightness of the infrared image is not appropriately reflected in the superimposed image when the amount of excited fluorescence increases
Solution Approach 1:
The control unit uses luminance information from the superimposed image to adjust the gain of image processing, ensuring that infrared brightness information is appropriately reflected while preventing excessive brightness
Solution Approach 2:
The system changes the gain parameter of image processing based on the injection state of phosphor, allowing appropriate reflection of infrared brightness information when fluorescence increases while maintaining control over excessive brightness
3Device complexity
If the luminance of white image and infrared image are adjusted using fixed parameters, then the adjustment process is simple, but the superimposed image cannot maintain suitable balance under different phosphor injection conditions
Solution Approach 1:
The system transitions from fixed parameter adjustment to dynamic parameter adjustment based on luminance information from the superimposed image, enabling adaptation to different phosphor injection conditions while maintaining a relatively simple control structure
Solution Approach 2:
The control unit adjusts luminance parameters based on feedback from luminance information of the superimposed image, enabling the system to adapt to different phosphor injection conditions automatically
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 solution effectively superimposes images with appropriate brightness levels, reducing noise and achieving a balanced composite image by adjusting light sources and image processing parameters dynamically.
Implementation Method 1
an image (referred to as a white image) in which an observation target is irradiated with white light and light reflected by the observation target is captured by an imaging element
Implementation Method 2
an image (referred to as an infrared image) in which the observation target is irradiated with excitation light such as near infrared rays and fluorescence excited from the phosphor included in the observation target by the excitation light is captured by the imaging element
Data Source
AI summary
An image processing apparatus includes, among other things, a control unit that adjusts luminance of a first image and luminance of a second image by adjusting a first control parameter for controlling at least one of a first light source, a first imaging unit, or a first image processing unit and a second control parameter for controlling at least one of a second light source, a second imaging unit, or a second image processing unit on the basis of luminance information of the superimposed image.