Imaging Support Device Pixel Density Calculation
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Solution Overview
Problem
Existing imaging technologies face challenges in reliably acquiring images of structures with required image quality, especially when the imaging device cannot be positioned perpendicular to the surface, leading to inadequate detection of cracks and crevices in infrastructure inspection.
Innovation Solution
An imaging support device and method that acquire and calculate actual pixel density based on imaging performance, distance, and inclination angle, determining if the image meets required pixel density standards, and adjusting the imaging position and direction to ensure high-quality image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the imaging device is positioned perpendicular to the surface to be imaged, then the image quality is improved, but the ease of operation deteriorates when the structure geometry prevents perpendicular positioning
Solution Approach 1:
The patent changes the parameters of pixel density calculation by incorporating inclination angle information. Instead of assuming perpendicular imaging, the system calculates actual pixel density by adjusting for the cosine of the inclination angle, allowing accurate quality assessment regardless of imaging angle
Solution Approach 2:
The patent replaces the mechanical requirement of perpendicular positioning with a computational solution. By using inclination angle sensors and calculating adjusted pixel density, the system substitutes physical positioning constraints with mathematical compensation, enabling accurate imaging quality assessment without strict perpendicular alignment
2Ease of operation
If the imaging device is positioned at an angle to the surface, then the ease of operation is improved, but the measurement precision deteriorates due to inadequate pixel density
Solution Approach 1:
The patent implements feedback by calculating actual pixel density based on inclination angle and comparing it against required pixel density thresholds. The system provides feedback on whether imaging quality requirements are met, allowing operators to adjust positioning or imaging parameters accordingly
Solution Approach 2:
The system dynamically changes the pixel density parameter by applying cosine correction based on measured inclination angle. This transforms the fixed pixel density specification into a variable parameter that automatically compensates for angular deviations, maintaining effective measurement precision across different operating conditions
3Device complexity
If the pixel density is not adjusted for inclination angle, then the device complexity is reduced, but the reliability deteriorates due to inaccurate image quality determination
Solution Approach 1:
The patent changes the pixel density parameter from a fixed value to a dynamically calculated value that incorporates inclination angle. By multiplying the specified pixel density by the cosine of the inclination angle, the system maintains reliability without adding complex hardware, using only computational adjustment
Solution Approach 2:
The system performs self-service by automatically measuring its own inclination angle and computing the corrected pixel density. The imaging device autonomously determines whether it meets quality requirements without external intervention, reducing the need for complex external verification systems
Data Source
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AI summary
An object of the invention is to provide an imaging support device and an imaging support method that can reliably recognize whether or not an image satisfies required image quality even in a case in which a surface to be imaged cannot be imaged in a direction perpendicular to the surface to be imaged. The imaging support device includes: a distance information-acquisition unit (20) that acquires distance information on a distance between an imaging device (200) and the surface to be imaged of a structure; an inclination angle information-acquisition unit (22) that acquires inclination angle information on an inclination angle of the surface to be imaged of the structure; an actual pixel density-calculation unit (24) that calculates actual pixel density of the surface to be imaged of the structure on the basis of imaging performance information of the imaging device (200) (including information on the number of pixels of an imaging element, size information of the imaging element, and information on a focal length), distance information, and inclination angle information; and a pixel density-determination unit (26) that determines whether or not the calculated actual pixel density matches required pixel density information.