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In this work, the feasibility of photoacoustic PA imaging and characterization of bone was investigated. Through the experiments on ex vivo bovine femur heads, the optical and ultrasonic penetrations in bone which determines the PA detection depth were investigated. Then, the feasibility of performing photoacoustic imaging of bone via the raster scan of a focused transducer was explored. The images...
Existed algorithms to detect constructing vehicles intrusion in order to prevent power grid transmission line from damage by using video/image processing can only detect constructing vehicles in a single color. In this paper, a new algorithm to detect invasive constructing vehicles based on BOW presentation model is proposed. Firstly, Gaussian fuzzy operation is imposed on the image and Gaussian mixture...
Photoacoustic tomography (PAT) of biological tissue offers potential advantages in distinguishing different structures according to their chemical composition. Yet the detected photoacoustic signals are usually of low signal-to-noise ratio (SNR), which seriously deteriorates the image quality in PAT. This paper introduces an improved multi-sample based adaptive approach to solve such a problem. With...
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