Endoscopic Image Pickup System Dynamic Reading Mode Switching
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Solution Overview
Problem
Existing image pickup systems face challenges in acquiring images with optimal brightness and resolution for both distant and near views in endoscopic observations, particularly in identifying lesions within body cavities, as they struggle to adjust signal processing modes effectively to suit varying observation conditions.
Innovation Solution
An image pickup system that includes a light source capable of emitting different wavelength bands and an image pickup device with adjustable reading modes, where the system automatically switches between single pixel and pixel addition reading modes based on the observed view, using a judging portion to determine the appropriate mode for optimal image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pixel addition reading mode is used to improve brightness for distant view observation, then signal-to-noise ratio is improved, but image resolution deteriorates
Solution Approach 1:
The patent applies dynamics by making the reading mode switchable between single pixel reading mode and pixel addition reading mode based on observation conditions. The control unit dynamically selects the appropriate reading mode according to the judged observation distance and wavelength band, allowing the system to adapt between high resolution and high signal-to-noise ratio requirements.
Solution Approach 2:
The patent changes the reading mode parameter (single pixel vs. pixel addition) based on observation conditions. By judging the observation distance and wavelength band, the system selects different reading modes to optimize either resolution or signal-to-noise ratio, effectively managing the trade-off between these two parameters.
2Measurement precision
If single pixel reading mode is used to improve image resolution for near view observation, then measurement precision is improved, but signal-to-noise ratio deteriorates
Solution Approach 1:
The system dynamically switches between reading modes based on observation conditions. When near view observation is detected, the control unit selects single pixel reading mode to prioritize resolution, while accepting lower signal-to-noise ratio as a trade-off that is acceptable for detailed examination.
Solution Approach 2:
The reading mode parameter is changed to single pixel mode when high resolution is required for near view observation. This parameter change optimizes measurement precision while the system accepts the corresponding impact on signal-to-noise ratio through intelligent mode selection.
3Adaptability or versatility
If the system switches reading modes based on observation conditions, then adaptability is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it judges observation distance, identifies wavelength bands, and selects appropriate reading modes. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity while achieving high adaptability.
Solution Approach 2:
The system uses feedback from the judging unit about observation conditions to automatically select the appropriate reading mode. This closed-loop control enables the system to adapt to different observation conditions automatically, improving versatility while keeping the control mechanism integrated and manageable.
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 system achieves high signal-to-noise ratio images suitable for distant views and high-resolution images for near views, enabling effective identification and confirmation of lesions, thereby improving diagnostic image quality.
Implementation Method 1
an image pickup device provided with an image pickup surface formed by two-dimensionally arranging a plurality of pixels for receiving the light formed by the objective optical system and photoelectrically converting the received light to generate electric signals
Data Source
AI summary
An image pickup system includes a light source apparatus, an objective optical system, an image pickup device, a judging portion configured to judge: an object is observed in which of a distant view and a near view, and an image pickup control portion configured to set a reading mode of the image pickup device according to a judgment result of the judging portion. The light source apparatus is capable of sequentially emitting red light, green light and blue light. The image pickup control portion sets a single pixel reading mode when that the object is observed in the distant view is judged, and blue light is emitted from the light source apparatus, and sets to a pixel addition reading mode when that the object is observed in the distant view is judged, and red light is emitted from the optical apparatus.