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In order to evaluate sub-health state, a new method based on Principal Component Analysis (PCA) was discussed in this paper. Simultaneous multi-information acquisition of ECG signals and pulse images was achieved by using self-designed simultaneous acquisition system. According to the change of grid area in each frame, pulse beat waves were obtained from pulse image. Then the extraction and PCA of...
A size concentration modeling method based on output variables dynamic correction is proposed for the sample data with asynchrony characteristics. In which, the modified recursive least square algorithm is used for continuous sample data. And by decay factor, the effect of new data is strengthened and the effect of old data is retained. For intermittent sample data, principal component regression...
Based on the minimize spanning tree and Fiedler vector, a new feature matching algorithm is proposed in this paper. Firstly, a weighted complete graph is constructed with the feature points of each image respectively, then search the minimal spanning tree in each complete graph. Secondly, perform spectral decomposition on the Gaussian-weighted Laplace matrix of the minimize spanning tree respectively,...
Due to the advantages of the intrinsically safe circuit, people are increasingly willing to make use of it in comprehensive automatization system and communication equipment. If practical non-explosive testing methods can be constructed base on discharge theory of intrinsically safe circuit, the designers will find it easier to grasp the performance of the circuit, thus resulting in the achievement...
In mobile communication, space is a very important domain to use. Two kinds of leading techniques are beamforming and STBC in MIMO system. This paper investigates the relation between beamforming and STBC at the capacity perspective. Both techniques can improve system performance at the cost of the capacity, which shows that they convert the matrix channel into a scalar AWGN channel. At low SNR, the...
Based on the center of graph, a point pattern feature matching method is proposed here. Firstly, a weighted complete graph is constructed with the feature points of each image, and then the center of each graph is found respectively. With the vertex sets of the centers, the feature points are divided into several layers according to the distance from the center, and then the corresponding relation...
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