Imaging Apparatus Automatic Fluorescence Sensitivity Control
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Solution Overview
Problem
In medical imaging, particularly during fluorescence observation, the sensitivity of fluorescent images cannot be automatically controlled due to varying irradiation conditions, requiring manual adjustment by users, which is laborious and burdensome.
Innovation Solution
An imaging apparatus with image sensor, image generation circuitry, and superimposition circuitry that calculates and adjusts both background and fluorescence sensitivity parameters, allowing for automatic control of fluorescence sensitivity based on predetermined ratios and brightness evaluation, ensuring consistent sensitivity ratios despite changes in irradiation conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual sensitivity adjustment is used for fluorescent images, then sensitivity can be set according to user preference, but the operation becomes laborious and time-consuming when irradiation conditions change
Solution Approach 1:
The system performs automatic sensitivity adjustment for fluorescent images by itself without requiring user intervention. The sensitivity adjustment unit automatically calculates and adjusts the sensitivity parameter based on the background image brightness and predetermined ratios, enabling the system to serve itself in maintaining optimal sensitivity under varying irradiation conditions
Solution Approach 2:
The system continuously monitors the background image brightness and uses this feedback to automatically adjust the fluorescent image sensitivity. The sensitivity adjustment is based on the current brightness state and predetermined ratios, creating a closed-loop control system that adapts to changing irradiation conditions in real-time
2Reliability
If automatic sensitivity control is applied to background images, then brightness uniformity is maintained, but the fluorescent image sensitivity cannot be automatically controlled
Solution Approach 1:
The sensitivity adjustment unit serves multiple functions: it controls both the background image sensitivity and the fluorescent image sensitivity using a unified automatic control mechanism. By establishing predetermined ratios between the two sensitivities, the system achieves multi-functionality where one control unit manages both image types, extending automatic control to previously manual operations
Solution Approach 2:
The system pre-establishes the relationship between background image sensitivity and fluorescent image sensitivity through predetermined ratios. This preliminary setup allows the fluorescent image sensitivity to be automatically determined based on the background image sensitivity, eliminating the need for separate manual adjustment while maintaining reliable brightness uniformity across both image types
Data Source
AI summary
According to one embodiment, an imaging apparatus includes an image sensor, image generation circuitry, calculation circuitry and superimposition circuitry. The image generation circuitry successively generates a first image and a second image. The calculation circuitry calculates a first parameter to allow brightness of the first image to be equal to or close to a predetermined value, and calculates a second parameter relating to brightness of the second image based on the first parameter and a predetermined ratio. The superimposition circuitry generates a composite image by superimposing the second image in which the brightness is adjusted using the second parameter onto the first image in which the brightness is adjusted using the first parameter.