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It is a problem that the results are unstable when local method is used to estimate optical flow at smooth color points. A method was presented to estimate stability through the condition number of local coefficients matrix. And the color results of global smooth were used to replace the unstable results of local color method. The combined model was provided with the advantages of high precision of...
This paper presents the approach to extract the local features of the two-dimensional Intrinsic Mode Function (IMF) obtained by 2EMD and detect the edge features using the monogenic signal. The monogenic signal is a 2D-generalization of the analytic signal using the Riesz transform taking place of the Hilbert Transform. Analyzing each 2D-IMF by studying local properties (amplitude, phase, orientation...
Human movement analysis has recently gained growing interest for computer vision researchers. In this paper, a simple but efficient algorithm using Fourier descriptor to represent spatial-temporal silhouette for human movement analysis is proposed. For each image sequence, motion detection and segmentation methods are used to segment and extract the moving silhouettes of people. Then, Fourier descriptor(FD)is...
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