Scheimpflug Angle Adjustment for Slope Imaging
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Solution Overview
Problem
Existing image capturing systems struggle to acquire in-focus images of slopes with varying inclinations and distances, especially when the vehicle moves, leading to out-of-focus images and reduced inspection efficiency.
Innovation Solution
The system employs an image capturing device with an image capturing lens and an image sensor, where the Scheimpflug angle between the central axis of the lens and the perpendicular line of the sensor is set to an angle other than 0°, based on the inclination angle of the object surface and the distance between the device and the surface. This configuration allows for capturing in-focus images of slopes while the vehicle is in motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional image capturing device with Scheimpflug angle of 0° is used, then the device structure is simple, but the captured images of slopes with varying inclinations and distances become out-of-focus
Solution Approach 1:
The patent applies parameter changes by adjusting the Scheimpflug angle from the conventional 0° to a non-zero angle based on the inclination angle of the object surface. This parameter modification enables the image capturing device to capture in-focus images of slopes with varying inclinations and distances, directly resolving the technical contradiction between image focus precision and device structure simplicity.
2Area of stationary object
If multiple cameras with different focal lengths are used to capture slope images, then the coverage of different slope regions is improved, but the system complexity and inspection efficiency are reduced
Solution Approach 1:
The patent applies universality by designing a single image capturing device that can capture images of slopes with varying inclinations and distances by adjusting the Scheimpflug angle. This eliminates the need for multiple cameras with different focal lengths, thereby improving inspection efficiency while maintaining comprehensive slope coverage.
3Productivity
If the vehicle moves while capturing slope images, then the inspection coverage is increased, but the images become out-of-focus reducing detection accuracy
Solution Approach 1:
The patent applies dynamics by making the Scheimpflug angle adjustable rather than fixed. This allows the image capturing device to adapt to varying slope inclinations and distances dynamically during vehicle movement, maintaining image focus accuracy while enabling increased inspection coverage and speed.
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 effectively captures in-focus images of slopes over a wide region, even when the vehicle meanders, improving inspection efficiency and enabling detailed detection of deformations such as cracks and peeling.
Implementation Method 1
an image capturing lens having a central axis; and an image sensor having a sensor surface and a perpendicular line perpendicular to the sensor surface, the image sensor to capture an image of an object surface of an object
Data Source
AI summary
An image capturing device includes: an image capturing lens having a central axis; and an image sensor having a sensor surface and a perpendicular line perpendicular to the sensor surface, the image sensor to capture an image of an object surface of an object. A Scheimpflug angle between the central axis and the perpendicular line is set to an angle other than 0° based on an angle α obtained by subtracting an inclination angle of the object surface from 90°.