Automatic correction of phase unwrapping errors
AssigneeLockheed Martin Corporation
InventorMark D. Pritt
Life of this patent
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Abstract
In a phase unwrapping and correction system, phase wrapped data is unwrapped with an unwrapping algorithm to obtain unwrapped image data. The unwrapped image data is further processed to correct the unwrapped image data by dividing the image represented by the unwrapped image data into regions defining boundaries corresponding to inconsistencies in the image data. The regions are then corrected by comparing them with one another and adjusting the multiples of 2.pi. assigned to each region to minimize discontinuities between the regions.
Claims20
A method of automatically unwrapping and correcting phase wrapped data to generate an unwrapped two-dimensional pixel representation corresponding to said phase wrapped data comprising:
- 1) unwrapping said phase wrapped data with a phase unwrapping algorithm to produce an uncorrected two-dimensional unwrapped pixel representation of said phase wrapped data;
- 2) dividing said uncorrected two-dimensional unwrapped pixel representation into regions defined by boundaries corresponding to inconsistencies in said two-dimensional representation;
- 3) adjusting the values of the pixels in said regions by adding selected additive multiples to the pixel values of each region wherein the pixels of a given region are adjusted by the same additive multiple and said additive multiples are selected to minimize the discontinuities between regions.
A method of correcting a two-dimensional representation of unwrapped data derived from phase wrapped data comprising:
- dividing said two-dimensional pixel representation into regions defined by boundaries corresponding to inconsistencies in said two-dimensional representation;
- adjusting the values of the pixels in said regions by adding selected additive multiples to the pixel values of each region whereby the pixels of a given region are adjusted by the same additive multiple and said additive multiples are selected to minimize the discontinuities between regions.
Dependencies are inferred from the claim text.