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An agglomeration detection method based on the Gaussian of acoustic signal is proposed for the gas-phase Ethylene polymerization. The forming mechanism of acoustic pressure in Fluid Bed Reactor (FBR) is analyzed first. Based on the analysis, the kurtosis of the acoustic signal is extracted as the feature to predict the changing in particle size distribution (PSD) of polymer within FBR. To avoid the...
This paper proposes a new method for image registration by combining SURF and FREAK. SURF can extract robust feature points, and the topology of FREAK descriptor has strong ability of regional description. First, feature points of images are extracted by SURF, and described by FREAK descriptor. Then descriptors are roughly matched through the ratio of the closest neighbor and second closest one. Second,...
In order to extract facial features effectively, a face recognition method is proposed in this article, which combined with gamma transform and gabor transform on the basis of the traditional gabor filter method. First of all, the face images are processed with gamma transform, which can eliminate the effects of light and other nonlinear factors; and then decompose the face images by improved gabor...
This paper presents a new method for identifying the abnormal action of the solitary oldies which is based on video sequence. First, we use the background subtraction and morphological filtering technology to extract the moving human contour. Then, we extract the motion energy image (MEI) of the moving body target, which is followed by extracting the Hu moments feature of human motion energy image...
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