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A method of building height extraction from multi-polarization SAR imagery, taking radarsat-2 as an example, was proposed based on backscatter model. First, the connected component of double-scatter of the buildings in the image was analyzed and its contribution to radar cross section was got simultaneously—a case study in urban areas of Beijing, China. Then, optimal polarized combination was utilized,...
Based on the measured spectra in the research area of Guangting reservoir, we build the model to retrieve chlorophyll-a, suspended solid and yellow substance. The paper mainly achieved the following results: we adopted matrix inversion method and L-M & NN method to analyse the water quality parameters, the selection schemes of the spectral band include REF, DER, RAN method, and then use the Guanting...
Remote sensing images often suffer from shadow duo to partially or totally occludes direct light from an illumination source. In this paper, we propose a novel shadow removal algorithm. The trimap could be generated automatically by morphological subtraction method according to the result of shadow detection. Then, the weighted color and texture sample selection image matting method is applied in...
Three-band model was originally used to retrieve chlorophyll-a concentrations of terrestrial plant leaves. Since turbid productive waters also contain much chlorophyll-a, the model was then adjusted to aquatic medium. With a more accurate physical mechanism than statistical methods and a less complicated model than analytical methods, three-band model has obtained wide applications in chlorophyll-a...
Template matching has been brought effective results in road tracking. Actually, the shape of template plays a very important role. In this paper, a novel circular template is utilized to search the center points of the road. The circular template is not necessary to rotate for the isotropy of template when searching the optimal road axis point, which means less computation. At the same time, least...
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