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In this paper, we propose a single image based high dynamic range (HDR) imaging method. In the method, the inverse camera response function (CRF) is modeled according to the empirical model of CRF firstly; then the optimal inverse CRF is resolved and multiplied by a weighting function to make it smooth in the areas near the maximum and minimum pixel values; finally, the HDR image is generated by conducting...
We examined a method for evaluating the cooling effects of trees for urban spaces using airborne LiDAR data. Voxel-based LAD distribution was derived from the data, and the distribution was applied to radiative transfer simulation to quantify solar transmittance and APAR. Subsequently, direct solar transmittance and transpiration rate of trees were calculated for an actual urban district, and several...
The performance of wireless vehicular communications can depend on multiple context factors, such as the propagation conditions, the traffic density, or the location of communication infrastructure units. This paper proposes and evaluates two techniques that are able to identify and quantify such dependencies, and uses them to estimate the vehicular communications performance exploiting context information...
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