A Technique for Measuring Vibration Displacement Using Camera Image
نویسندگان
چکیده
منابع مشابه
Frequency Identification of Vibration Signals Using Video Camera Image Data
This study showed that an image data acquisition system connecting a high-speed camera or webcam to a notebook or personal computer (PC) can precisely capture most dominant modes of vibration signal, but may involve the non-physical modes induced by the insufficient frame rates. Using a simple model, frequencies of these modes are properly predicted and excluded. Two experimental designs, whic...
متن کاملA Technique for Displaying Presence Information on a Live Camera Image Using 3-D Mask Objects
Installing a live camera in an office or laboratory can provide reliable high-quality communication among collaborators who are physically separated, but may also lead to privacy concerns. We propose a technique for displaying presence information using a three-dimensional object as a mask that covers the image of people in the live camera system. Our technique enables information to be shared ...
متن کاملA New Image-Processing-Based Technique for Measuring Leaf Dimensions
We propose in this paper a new method for measuring a number of leaf dimension parameters including height, width, average width, perimeter and area. A digital scanner is utilized to acquire leaf images, which unlike digital cameras, requires no calibration in terms of size and angle of the acquired images. Edge detection, filtering and thresholding algorithms are applied to identify the leaf s...
متن کاملImage splitting--a technique for measuring retinal vascular reactivity.
The observation of changes of pial vessel calibre has withstood the test of time in assessing cerebrovascular reactivity. A recent refinement has been the adoption of the image splitting television technique of Baez, which allows accurate and rapid measurements of vessel calibre to be made in situ. This method has been successfully applied to the eye, where the retinal vessels are readily visib...
متن کاملDisplacement of Droplets on a Surface Using Ultrasonic Vibration
Liquids handling is an important issue in biomedical analysis. We propose two different devices for ultrasonic droplets displacement. Each one involve a different physical phenomenon. The first device proposed is a low frequency standing waves using flexural plate waves (FPW). In this case, acoustic radiation pressure is involved for the displacement. The second one uses high frequency travelli...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Transactions of the Korean Society for Noise and Vibration Engineering
سال: 2013
ISSN: 1598-2785
DOI: 10.5050/ksnve.2013.23.9.789