Multiple-orientation image defect detection and correction
First Claim
1. A method for capturing an image formed in a physical medium having imperfections, the method comprising:
- positioning a physical medium in relationship to an image capturing device such that the physical medium has a first orientation;
capturing at least a first captured image representative of the image formed in the medium, at the first orientation;
positioning the physical medium in relationship to the image capturing device such that the physical medium has a second orientation, different from the first orientation;
capturing at least a second captured image representative of the image formed in the physical medium, at the second orientation;
analyzing the captured images to identify portions of the captured images corresponding to imperfections in the physical medium; and
forming a corrected image by removing, at least in part, the identified portions of the captured images corresponding to imperfections in the physical medium.
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Accused Products
Abstract
A method, system, and computer readable medium are disclosed for detecting and removing defects using images captured at multiple orientations. Defects in a physical medium in which an image is formed can hamper attempts to record representations of the original image. To lessen the effects of these physical defects on captured images, multiple images are captured using multiple different orientations of the physical medium in which the image is formed. The physical defects obscure different image information when viewed from different angles. By capturing images at multiple orientations and combining these images, almost all of the desired image information from the original image can be recovered, despite imperfections in the physical medium. The present invention finds application in image capturing devices, such as flatbed scanners, photocopiers, and the like.
95 Citations
22 Claims
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1. A method for capturing an image formed in a physical medium having imperfections, the method comprising:
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positioning a physical medium in relationship to an image capturing device such that the physical medium has a first orientation;
capturing at least a first captured image representative of the image formed in the medium, at the first orientation;
positioning the physical medium in relationship to the image capturing device such that the physical medium has a second orientation, different from the first orientation;
capturing at least a second captured image representative of the image formed in the physical medium, at the second orientation;
analyzing the captured images to identify portions of the captured images corresponding to imperfections in the physical medium; and
forming a corrected image by removing, at least in part, the identified portions of the captured images corresponding to imperfections in the physical medium. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer readable medium tangibly embodying a program of instructions, said program of instructions including instructions capable of:
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storing, at least temporarily, a first captured image representative of an image formed in a physical medium, said physical medium having a first orientation when said first captured image is captured;
storing, at least temporarily, a second captured image representative of the image formed in said physical medium, said physical medium having a second orientation when said second captured image is captured;
analyzing the captured images to identify portions of the captured images corresponding to imperfections in the physical medium; and
forming a corrected image by removing, at least in part, the identified portions of the captured images corresponding to imperfections in the physical medium. - View Dependent Claims (9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22)
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14. An image processing system comprising:
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at least one communications interface capable of receiving information from an image capturing system;
at least one processor;
memory operably associated with said processor; and
a program of instructions capable of being stored in said memory and executed by said processor;
said program of instructions including instructions capable of;
storing, at least temporarily, a first captured image representative of an image formed in a physical medium, said physical medium having a first orientation when said first captured image is captured;
storing, at least temporarily, a second captured image representative of the image formed in said physical medium, said physical medium having a second orientation when said second captured image is captured;
analyzing said captured images to identify portions of the captured images corresponding to imperfections in the physical medium; and
forming a corrected image by removing, at least in part, the identified portions of said captured images corresponding to imperfections in said physical medium.
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Specification