Design and Estimation of Coded Exposure Point Spread Functions

Scott McCloskey, Yuanyuan Ding, Jingyi Yu
2012 IEEE Transactions on Pattern Analysis and Machine Intelligence  
We address the problem of motion deblurring using coded exposure. This approach allows for accurate estimation of a sharp latent image via wellposed deconvolution and avoids lost image content that cannot be recovered from images acquired with a traditional shutter. Previous work in this area has used either manual user input or alpha matting approaches to estimate the coded exposure Point Spread Function (PSF) from the captured image. In order to automate deblurring and to avoid the
more » ... of matting approaches, we propose a Fourier-domain statistical approach to coded exposure PSF estimation that allows us to estimate the latent image in cases of constant velocity, constant acceleration, and harmonic motion. We further demonstrate that previously used criteria to choose a coded exposure PSF do not produce one with optimal reconstruction error, and that an additional 30 percent reduction in Root Mean Squared Error (RMSE) of the latent image estimate can be achieved by incorporating natural image statistics.
doi:10.1109/tpami.2012.108 pmid:22585096 fatcat:afxxdmmcpvcr7dyb4tzwgt3u6i