Removal of image artifacts from sensor dust
AssigneeMicrosoft Corporation
InventorsStephen Lin, Baining Guo, Changyin Zhou
Life of this patent
Estimating the term…
Abstract
Removal of the effects of dust or other impurities on image data is described. In one example, a model of artifact formation from sensor dust is determined. From the model of artifact formation, contextual information in the image and a color consistency constraint may be applied on the dust to remove the dust artifacts. Artifacts may also be removed from multiple images from the same or different cameras or camera settings.
Claims18
A system comprising a computing device and at least one program module that are together configured for performing actions comprising:
- identifying an artifact in an image, where the artifact results from an impurity, and where the identifying comprises:
- determining, with respect to an estimated projection geometry, a function space of possible impurity artifacts,
- identifying a minimum distance between an estimated artifact formation model and one of the possible impurity artifacts of the determined function space, and
- constructing, based on the determined function space and on the identified minimum distance, a dust removal solution;
- and
- removing, based on the constructed dust removal solution, the identified artifact from the image.
A method performed on a computing device, the method comprising:
- identifying an artifact in an image, where the artifact results from an impurity, and where the identifying comprises:
- determining, with respect to an estimated projection geometry, a function space of possible impurity artifacts,
- identifying a minimum distance between an estimated artifact formation model and one of the possible impurity artifacts of the determined function space, and
- constructing, based on the determined function space and on the identified minimum distance, a dust removal solution;
- and
- removing, based on the constructed dust removal solution, the identified artifact from the image.
At least one computer-readable storage device storing computer-executable instructions that, when executed by a computing device, cause the computing device to perform a method comprising:
- identifying an artifact in an image, where the artifact results from an impurity, and where the identifying comprises:
- determining, with respect to an estimated projection geometry, a function space of possible impurity artifacts,
- identifying a minimum distance between an estimated artifact formation model and one of the possible impurity artifacts of the determined function space, and
- constructing, based on the determined function space and on the identified minimum distance, a dust removal solution;
- and
- removing, based on the constructed dust removal solution, the identified artifact from the image.
Dependencies are inferred from the claim text.