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The boundary of land and water in a remote sensing image is defined as water front. Picking up the water front plays an important role in comprehensive management of waterline, strengthening of the ability in resisting nature disaster, and the research of waterline's environmental change. Using RS methods to pick up water front has advantages of wide-range, high-precision, and ability of dynamic monitoring...
The paper classifies urban land cover object-oriented. First, use the Mean Shift algorithm to segment the digital aerial image of study area. By changing the algorithm initial-parameters, different scales of the segmentation results are got, and an optimal scale segmentation result is selected from these results, as the data source of the classification process. Then, by analyzing the spectral features,...
During the process of the recognizing two-dimensional bar code, the two-dimensional bar can be corrected further only after accurately positing bar code in original image. In this paper, in case of the two-dimensional bar data matrix, the concept of convex hull in computational geometry is used to locate bar code in the paper. The vertices in convex hulls are selected from the list of pixels in order...
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