Method and system for restoring a motion-blurred image
AssigneeABBYY Software Ltd.
InventorsVladimir Rybkin, Sergey Fedorov
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Abstract
Embodiments of the present invention disclose a method and system for restoring a motion-blurred image. The method comprises determining parameters for a one-dimensional Optical Transfer Function (OTF) for the motion-blurred image in Fourier space; determining a signal-to-noise ratio for the motion-blurred image in the Fourier space; and correcting for motion blur based on the parameters of the OTF. Determining the parameters comprises calculating a function Φ(p,q) which is based on the square of the modulus of the Fourier transform |G(p,q)|2 of the motion-blurred image. The parameters include the absolute value of the one-dimensional OTF, and the phase and sign of the OTF.
Claims20
A method for correcting for motion blur in a motion-blurred image, comprising:
- determining parameters for a one-dimensional Optical Transfer Function (OTF) for the motion-blurred image in Fourier space;
- determining a signal-to-noise ratio for the motion-blurred image in the Fourier space;
- and
- correcting for motion blur based on the parameters of the OTF.
The method of claim 5, wherein identifying the noise on the function Φk(p,q) is based on a radial profile of ln(Φk(p,q)).
A computer-readable medium having stored thereon a sequence of instructions which, when executed by a computer, causes the computer to perform a method for restoring a motion-blurred image, comprising:
- determining parameters for a one-dimensional Optical Transfer Function (OTF) for the motion-blurred image in Fourier space;
- determining a signal-to- noise ratio for the motion-blurred image in the Fourier space;
- and
- correcting for motion blur based on the parameters of the OTF.
Dependencies are inferred from the claim text.