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Design and Estimation of Coded Exposure Point Spread Functions
Oct. 2012 (vol. 34 no. 10)
pp. 2071-2077
Scott McCloskey, Honeywell Labs, Golden Valley
Yuanyuan Ding, Epson Research and Development
Jingyi Yu, University of Delaware, Newark
We address the problem of motion deblurring using coded exposure. This approach allows for accurate estimation of a sharp latent image via well-posed 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 limitations 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.
Index Terms:
Estimation,Image edge detection,Correlation,Image reconstruction,Noise measurement,Acceleration,computational photography.,Coded exposure,motion deblurring,blur estimation
Scott McCloskey, Yuanyuan Ding, Jingyi Yu, "Design and Estimation of Coded Exposure Point Spread Functions," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 34, no. 10, pp. 2071-2077, Oct. 2012, doi:10.1109/TPAMI.2012.108
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