MULTI-affine misalignment removal from bracketed images for hdr photography

A novel procedure able to align bracketed images acquired with a handheld camera is illustrated and discubed. The method is based on a system of linear equations solved via least squares, which provides the transformation parameters of Low Dynamic Range images acquired for High Dynamic Range photography. The method uses features automatically matched in multiple images and a mathematical formulation based on affine transformations simultaneously estimated for the whole dataset. This provides a new set of images with pixel-to-pixel correspondence along with statistics to evaluate the quality of image alignment.