Magnification Observation Apparatus Dynamic Range and Resolution Mode Switching
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Solution Overview
Problem
Magnification observation apparatuses struggle to automatically switch between dynamic range widening and resolution enhancing modes, limiting their ability to effectively image samples with varying luminance ranges and contrasting densities, such as ceramics, without causing overexposure or underexposure.
Innovation Solution
A magnification observation apparatus with an imaging condition setting part, an imaging unit, a synthesized image generating part, and a mode selecting part that allows for automatic switching between dynamic range widening and resolution enhancing modes by adjusting exposure times and synthesizing images under different conditions to achieve either a wider dynamic range or enhanced luminance resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single exposure time is used for imaging, then the imaging process is simple and fast, but the dynamic range is limited causing overexposure or underexposure
Solution Approach 1:
The system dynamically adjusts the exposure time based on the selected imaging mode (dynamic range widening mode uses multiple exposure times, while luminance resolution enhancing mode uses a single optimized exposure time), allowing the imaging parameters to adapt to different observation requirements
Solution Approach 2:
The system changes the exposure time parameter according to the imaging mode: in dynamic range widening mode, multiple exposure times are used to capture different luminance ranges, while in luminance resolution enhancing mode, a single exposure time is selected to optimize the S/N ratio within a limited dynamic range
2Reliability
If multiple images with different exposure times are synthesized to widen dynamic range, then the dynamic range is improved, but the luminance resolution and S/N ratio are reduced
Solution Approach 1:
The system provides dynamic switching between two imaging modes: dynamic range widening mode (synthesizing multiple images for extended dynamic range) and luminance resolution enhancing mode (using single image with optimized exposure for high S/N ratio), allowing users to select the appropriate mode based on their specific observation needs
Solution Approach 2:
The system changes the imaging strategy by adjusting the exposure time selection: in dynamic range widening mode, multiple exposure times are used to capture different luminance ranges, while in luminance resolution enhancing mode, a single exposure time is selected to optimize the S/N ratio within a limited dynamic range
3Adaptability or versatility
If the apparatus can switch between different imaging modes, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The imaging unit is designed to perform multiple functions: it can operate in dynamic range widening mode by synthesizing multiple images with different exposure times, or in luminance resolution enhancing mode by selecting a single optimized image, making the system universally applicable to different imaging requirements
Solution Approach 2:
The system implements dynamic mode switching that allows the imaging parameters and processing workflow to adapt based on the selected mode, providing versatility without requiring physically separate imaging systems for different functions
Data Source
AI summary
A high tone image is saved in a versatile image file format to enhance usability. There are provided an imaging unit that images an original image having a predetermined dynamic range, which is a ratio between minimum luminance and maximum luminance; a synthesized image generating part that generates a synthesized image data that is higher in tone than a tone width of the original image by synthesizing a plurality of original images imaged under different imaging conditions at the same observation position; a display unit that displays the images imaged by the imaging unit; a tone conversion part that converts the synthesized image data generated by the synthesized image generating part to low tone image data having a tone width capable of being displayed on the display unit; and a tone data saving part that generates a high tone data-attached display file including a high tone image region for saving the synthesized image data serving as a basis as an image file for saving the low tone image data.