A method and apparatus (9) for estimating the blur parameters of blurred
images (g1, g2) are disclosed. The apparatus (9) has
one or more image sensors (10) for capturing the blurred images (g1,
g2), a plurality of correlators (20, 30) for performing autocorrelation
of the blurred image (g1) and cross-correlation between the two images
(g1, g2) respectively, and an error function calculator (40)
for evaluating an error function over all possible displacements using the results
from the correlators (20, 30). The apparatus (9) further includes
an extreme locater (50) for finding the displacement with the minimum value
for the error function.