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In Cognitive Radio Network an efficient fast and accurate wideband spectrum sensing technique is highly required to identify the spectrum holes in wireless environment to achieve efficient spectrum utilization. The wavelet transform being a multi-resolution analysis tool has been proposed for the edge detection of sub-bands in wideband spectrum sensing [1]. In this paper we proposed an improved wavelet...
In this paper, a building facade detection algorithm is proposed. Proposed algorithm first detects the edges present in an image and connects them into line segments. Then a polar histogram mapping is used to find the vanishing points in the scene. An approach with low complexity is introduced to cluster the line segments according to their vanishing points. Line segments and their corresponding vanishing...
In this paper, indoor environment classification and interpretation algorithm is proposed. Proposed algorithm needs low computation power and low payload thus enabling micro air vehicle (MAV) to quickly react and navigate. Here indoor environment is classified into corridor, staircase, and open space by using image edge gist descriptors and a neural network classifier. Use of some predetermined thresholds...
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