A displacement measurement system using image processing with video from a digital camera equipped with various analytical functions.
"OpticG 2D" is a system that performs non-contact, two-dimensional dynamic displacement measurement and allows for analysis using various tools. 1. Place a digital camera at a distance aimed at the area to be measured. 2. Measure the distance from the camera to the target using a distance meter. 3. Record a video with the digital camera. 4. Process the video with image processing software on a computer. This will yield displacement data. Displacement can be obtained not only in the vertical direction but also in the horizontal direction. This system consists of shooting equipment (telephoto lens, calibrated digital camera, laser distance meter, etc.) and a computer with the analysis software installed. While it is possible to use your own camera, prior calibration is necessary for accurate measurements. In this case, please use our calibration service. The analysis software includes various functions to assist with analysis, such as filtering, arithmetic operations between graphs, statistical processing, and simple dimension measurement. If two cameras are used to capture images from different directions, three-dimensional displacement measurement is also possible.
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basic information
<Specifications> Measurable shooting distance: 3–80m Total system weight: Approximately 8.5kg (for recommended equipment set) Power supply: Not required (battery-operated) Camera: Models capable of manual focus (digital single-lens reflex cameras, mirrorless cameras, compact digital cameras, digital video cameras) Sampling rate: 30fps (depends on the camera) Measurement processing method: Image matching method Processing time: Approximately 1 minute per 1 minute of video OS: Windows Vista/7/8/8.1/10 <Performance> (Displacement measurement range for targets 20m away): ±10mm (varies depending on shooting distance and camera settings) (Displacement measurement accuracy): 0.1mm (accuracy decreases for distant targets) <Functions> - "Batch matching" for processing multiple videos continuously - Noise removal through filtering - Statistical processing of displacement - Comparison between graphs - Graph output in image format or CSV format - Overlaying measurement result graphs from different measurement points - Calculations between measurement results (relative displacement, etc.) - Simple dimensional measurement using captured images
Applications/Examples of results
<Applications> - Measurement of bridge girder deflection - Abnormal diagnosis of bearings - Diagnosis of girder play - Analysis of component natural vibrations - Strain analysis Others <Used Technologies> Patent No. 5281610 Patent No. 4948660 <Implementation Achievements> Kyoto University, among others
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Company information
Zoomscape Inc. is a venture company engaged in the development of technology for surveying and measurement using images. We are developing systems based on a new technology called remote photographic measurement, aiming to "enable measurements that were previously impossible" and "make measurements safer and more efficient than before." By creating and promoting these systems, we contribute to the development of society.
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