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Item Photographically Guided Alignment for HDR Images(The Eurographics Association, 2011) Akyüzy, Ahmet Oguz; A. Day and R. Mantiuk and E. Reinhard and R. ScopignoThis paper presents an automatic image alignment algorithm that alleviates the need to keep the camera still during the capture of a bracketed sequence to obtain an HDR image. Our algorithm assumes that the misalignment between the two consecutive exposures is translational. Using a photographically guided random search, our algorithm first finds properly exposed high contrast regions. The shift amount is then found by analyzing and matching the pixel correlations inside these regions.