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To avoid the drawbacks, namely low security level, of Ni's algorithm, this paper proposed a secure and reversible data hiding method based on odd-even interleaving embedding. This algorithm first constructed the gray level histogram of the cover image, and then used the pixels in peak point set to embed information. In the embedding process, this method embedded information in odd-even interleaving...
Feature selection is viewed as an important preprocessing step for pattern recognition, machine learning and data mining. Traditional hill-climbing search approaches to feature selection have difficulties to find optimal reducts. And the current stochastic search strategies, such as GA, ACO and PSO, provide a more robust solution but at the expense of increased computational effort. It is necessary...
A new structure road detection algorithm based on open uniform B-spline curve model is proposed. Firstly, Canny edge detection algorithm is used to extract the road edge. Then road markings are gotten from the edge map by the least square method. Lastly, the road model (B-spline model) is fitted after the central points of the road are gotten from the lane markings. In order to accurate the position...
A new adaptive rational image interpolation algorithm is proposed.For a natural image, according to the difference information of the local pixel gray value in the vertical and horizonal direction, a conic blending spline with large weight parameters is employed to reconstruct sharp edges and image details within the interpolated image, and one with small weight is used to reduced the blocking artifacts...
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