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US 2019/0293518 A1Published application
New autonomous electro-optical system to monitor in real-time the full spatial motion (rotation and displacement) of civil structures
AssigneeCalifornia Institute of Technology
InventorsShervin Larigani Taghavi, Thomas H. Heaton
Life of this patent
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Abstract
An electro-optical device capable of identifying a target in the time series of the images so as to measure motion of a civil structure, such as a bridge, in response to forces (such as the weight of a vehicle traversing the bridge).
Claims23
An electro-optical device, comprising:
- an imaging system;
- a sensor outputting signals in response to one or more images of an object or region of interest imaged on the sensor using the imaging system;
- an analog amplifier connected to the sensor, the analog amplifier amplifying the signals using an analog process so as to form an analog output;
- an analog to digital converter (ADC) connected to the analog amplifier, the ADC converting the analog output into a digital data;
- a demosaicing module connected to the ADC, the demosaicing module formatting the digital data into digital image data comprising the digital data associated with appropriate pixel positions on a display so that the digital image data can be used to construct the images of the object or the region of interest on the display;
- a video card comprising a graphics processing unit converting the digital image data into a time series of the images readable by a computer;
- the computer connected to the video card, wherein the computer identifies a target in the time series of the images;
- and
- a transmitter transmitting information comprising an identification of the target.
6 more elements
An electro-optical device, comprising:
- an image sensor outputting signals in response to a time series of images captured on the image sensor;
- a computer connected to the image sensor so as to receive the signals, wherein the images comprise a time series of image frames indexed with an integer k and the computer identifies a target inside the kth image frame using an image of the target in the (k-1)th image frame.
An electro-optic device, comprising:
- a sensor outputting signals in response to a time series of image frames indexed with an integer k and captured on the sensor, the image frames comprising images of a region of interest;
- a plurality of lasers physically connected to the sensor so that the lasers are fixed relative to the sensor, the lasers each transmitting an electromagnetic beam to the region of interest so that images of the beams appear as spots in the image frames;
- and
- a computer connected to the sensor so as to receive the signals, wherein:
- the computer associates certain motions of the beams identified in the image frames with rotation of the sensor, the certain motions comprising motions that are a function K(L, α, θn) where α is an orientation angle of the sensor, θn are the angles of orientation of each of the lasers, and L is a distance between the sensor and the region of interest;
- and
- the computer determines the location of the target taking into account the rotation of the sensor.
4 more elements
Dependencies are inferred from the claim text.