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In this paper, we propose a new method for road curve fitting in urban environment based on multi-resolution analysis. The main technical contributions of the proposed method are the reconstructed approximation on the basis of the wavelet decomposition structure for curve fitting and the de-noising via the wavelet coefficients thresholding. The carried out experimental tests show promising results...
The state-of-the-art downsampling method for graph signals has been constructed by using maximum spanning trees (MSTs) of the graphs. For the graph signals defined on unweighted densely connected graphs, such as social network data, the sampling rates via MST-based downsampling are not close to 1 over 2, leading to a unbalanced downsampling phenomenon on multi-level downsampling. The unbalance hinders...
We propose a spectral-spatial linear discriminant analysis method (LDA) for dimensionality reduction in hyperspectral image. The proposed method uses a local scatter of the small neighborhood as a regularizer to incorporate into the objective function of the LDA. The intrinsic idea is to design an optimal linear transformation that makes these samples among the neighborhood approximate the local mean...
Rotation scale and translation invariant (RST-invariant) feature extraction methods play a critical role in optical Chinese character recognition. However, vast majority of them either has a strict constraint of input image, or has a poor performance on discriminating similar Chinese characters. In this paper, a novel method called Sector Projection Fourier Descriptor (SP-FD) is proposed. SP-FD is...
Classification the 3D models in the graphical environment is a key problem with applications in computer graphics, virtual reality, especially the intelligent virtual human for humanoid animation. The challenging aspects of this problem are to find a suitable shapes' feature that can be used to compare them quickly and a proper method to classify the models on the features. We propose a method of...
A collaborative design frame based on virtual prototype and virtual manufacturing (CDFVPM) is explored. In CDFVPM, the virtual product prototype (VPP) used as a product shared information database, and to view the product during design process before creation of any physical prototype, to detect the product's performance by simulating the product's working process and interactive using process. The...
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