Red-Eye Correction Undo via Embedded Original Data Metadata
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Solution Overview
Problem
Existing digital image processing technologies lack a reliable method to undo red-eye correction, especially after the correction has been performed on a different device or after the image has been transferred, as automatic correction is not foolproof and users may want to revert changes at a later time.
Innovation Solution
Storing the original image data along with the corrected digital image as metadata, including location and size indicators for each red-eye region, allows for the undoing of red-eye correction on any device capable of reading this metadata, enabling users to selectively revert or redo changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic red-eye correction is performed on a digital image, then the red-eye effect is corrected, but the user cannot undo the correction later
Solution Approach 1:
The patent applies preliminary action by storing the original uncorrected image data and metadata about red-eye regions before the correction is finalized. This allows the system to revert to the original state later if needed, effectively preparing the undo capability in advance.
Solution Approach 2:
The patent creates a copy of the original image data and stores it alongside the corrected image. This copy serves as the basis for undoing the correction, allowing the user to restore the original appearance without losing the corrected version.
2Reliability
If red-eye correction is performed on one device, then the correction is applied, but the correction cannot be undone on a different device
Solution Approach 1:
The patent extracts the essential information needed for undoing correction (original image data and red-eye region metadata) and stores it in a portable format within the image file itself. This extracted information can be transferred to any device that supports the format, enabling undo functionality across different platforms.
Solution Approach 2:
The patent makes the correction data universal by storing it in a standardized metadata format that can be read by multiple devices. The embedded original image data and region information work together across different software environments, allowing the undo function to operate universally regardless of which device performed the original correction.
3Ease of operation
If the original image data is stored with the corrected image, then undo functionality is enabled, but the file size increases
Solution Approach 1:
The patent applies local quality by storing only the specific portions of the original image data that correspond to red-eye regions, rather than storing the entire original image. The metadata precisely identifies which areas need to be restored, allowing selective storage of original data only where corrections were made.
Solution Approach 2:
The patent uses partial action by storing a simplified or downsampled version of the original image data in the metadata, rather than the full-resolution data. This partial copy contains sufficient information to restore the red-eye regions at appropriate quality levels while occupying minimal space.
Data Source
AI summary
A device that performs automatic red-eye correction on a digital image saves the original image data and a location indicator from each portion of the digital image on which red-eye correction is performed to facilitate the subsequent undoing of red-eye correction. Red-eye correction may be undone at any time after red-eye correction has been performed by replacing the corrected image data with the original image data that is stored with the corrected digital image, and the device on which red-eye correction is undone may be distinct from the device that captured the digital image and from the device that performed red-eye correction on the digital image.