Contactless Motion-Blur Imaging for Precise Moving-Object Location
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Solution Overview
Problem
Conventional contact-type location measurement devices suffer from limited sensor attachment, detachment issues, and inertia-induced measuring errors, particularly when sensors are attached to high-temperature drivers, leading to inaccurate and imprecise results.
Innovation Solution
A contactless location information acquisition apparatus using light modulation and lens position modulation, which includes an imaging part, modulation part, and controller, generates motion blur in images to obtain precise location information by moving the imaging part with a predetermined pattern, and controls light intensity and wavelength to enhance time resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If contact-type sensors are attached to the driver, then location information can be obtained, but measurement precision deteriorates due to sensor inertia and detachment issues
Solution Approach 1:
The patent replaces contact-type mechanical sensors with a contactless optical measurement system. An imaging device captures images of the driver, and a controller calculates location information from these images, eliminating the need for physical sensor attachment and thereby removing issues related to sensor inertia and detachment.
2Measurement precision
If conventional contact-type sensors are used, then location measurement is possible, but measurement precision deteriorates due to sensor inertia
Solution Approach 1:
The patent replaces the mechanical sensor attachment system with an optical imaging system. The imaging device captures images of the driver, and the controller processes these images to obtain location information, thereby eliminating sensor inertia and simplifying the overall measurement system.
3Measurement precision
If the frame rate is increased to improve location measurement accuracy, then measurement precision improves, but productivity deteriorates due to increased data processing requirements
Solution Approach 1:
The patent uses motion blur, which is typically considered a degradation in image quality, as a useful feature for measurement. By intentionally allowing motion blur in the captured images, the system can extract location information without requiring high frame rates, thereby reducing data processing requirements while maintaining measurement accuracy.
4Measurement precision
If contact-type sensors are attached to high-temperature drivers, then location information can be obtained, but measurement precision deteriorates due to drift phenomenon
Solution Approach 1:
The patent replaces contact-type sensors with a contactless optical imaging system. The imaging device captures images of the driver without physical contact, and the controller calculates location information from these images, thereby eliminating the drift phenomenon that occurs when sensors are attached to high-temperature surfaces.
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
Enables high-resolution, high-accuracy location measurement of moving objects without increasing frame rates or using high-performance processors, effectively overcoming limitations of conventional contact-type devices.
Implementation Method 1
The light source may be spaced apart from the object, and may be configured to irradiate a light to the object. The reflecting member may be attached to a pictured surface of the object, and may be configured to reflect the light irradiated from the light source. The imaging part may be configured to take picture of the light reflected from the reflecting member, to obtain the image.
Implementation Method 2
The modulation part is configured to generate a motion blur to the pictured image, and is configured to move the imaging part to a predetermined first pattern, so as for the motion blurred image to have a second pattern.
Implementation Method 3
The pattern of the light may be performed by changing at least one of light intensity and light wavelength for the exposure time into a predetermined pattern.
Data Source
AI summary
In a contactless location information acquisition apparatus and a location information acquisition method using the acquisition apparatus, the acquisition apparatus includes an imaging part, a modulation part and a controller. The imaging part is spaced apart from a moving object, and is configured to take picture of the object in a predetermined exposure time. The modulation part is configured to generate a motion blur to the pictured image, and is configured to move the imaging part to a predetermined first pattern, so as for the motion blurred image to have a second pattern. The controller is configured to obtain a location of the object from the motion blurred image for the exposure time.