a data continuity detector configured to detect data continuity of a first image data made up of a plurality of pixels acquired by light signals of a real world being cast upon a plurality of detecting elements each having spatio-temporal integration effects, of which a part of continuity of the light signals of the real world have been lost;

a real world estimating unit configured to detect real world features which a first function representing said real world light signals has, corresponding to said data continuity detected by said data continuity detector, said real world estimating unit configured to approximate said first function with a predetermined second function by setting pixel values of said pixels corresponding to a predetermined distance along at least a one dimensional direction from a reference point corresponding to said data continuity detected by said continuity detector as pixel values acquired by integration effects in at least said one dimensional direction, and to calculate an intra-pixel gradient which is a gradient of said second function within predetermined pixels as said real world features; and

an image generator configured to predict and generate second image data based on said real world features detected by said real world estimating unit.