Video Redaction via Data Extraction and Metadata Linking
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Solution Overview
Problem
Existing methods for redacting sensitive information in video files, such as those from social media and security cameras, are inadequate as they do not ensure complete security against public access and decoding, with conventional blurring methods being easily reversible and original files remaining accessible.
Innovation Solution
A method and system that create a duplicate video file, allowing users to define and redact specific data, saving the original data securely and embedding metadata for authorized retrieval, ensuring only redacted data is publicly accessible while maintaining the original data's privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional blurring methods are used to redact sensitive information, then the redaction process is simple and fast, but the security is insufficient as the original data can be decoded or retrieved
Solution Approach 1:
The patent extracts the sensitive original data from the video file and stores it separately in a secure database, while the redacted video file contains only the blurred version. This separation ensures that even if someone obtains the redacted video, they cannot retrieve the original sensitive information without proper authorization and access to the separate database.
Solution Approach 2:
The system segments the video data into two distinct parts: the redacted video file accessible to the public and the original sensitive data stored separately in a secured database. This segmentation prevents unauthorized access to the complete information while maintaining public access to the redacted version.
2Ease of operation
If original video files are saved in an accessible database for public search, then public users can easily retrieve videos, but sensitive information in those videos is exposed
Solution Approach 1:
The patent introduces a redacted video file as an intermediary between the original video and the public. The redacted video file serves as a mediator that allows public access to video content while filtering out sensitive information through blurring, thus protecting the original sensitive data from direct exposure.
Solution Approach 2:
The system creates a copy of the original video file and applies redaction to this copy, while the original file remains stored in a secured database. This copying approach allows the public to access the redacted version without compromising the security of the original sensitive information.
3Ease of manufacture
If manual selection and blocking of irrelevant faces is performed, then the redaction process is simple, but total security is not guaranteed as decoding is possible
Solution Approach 1:
Instead of merely blocking sensitive information with overlays, the patent extracts the actual sensitive data (faces, speeches, texts) from the video and stores it separately in a secured database. This extraction ensures that the blocked information cannot be decoded from the redacted video alone, as the original data is separated and protected.
Solution Approach 2:
The system prepares for potential security breaches by beforehand separating and securing the original sensitive data in a protected database. This prior cushioning measure ensures that even if the redacted video is compromised, the original sensitive information remains protected due to the pre-established separation and security measures.
Data Source
AI summary
A system and method for redacting private or sensitive information in a video file before publishing the video file to the public are disclosed. The system and method do not redact an original video file but a duplicated video file, and only redacted duplicated video file will be displayed to a public user. A system and method for retrieving original data corresponding to the redacted data are also disclosed. Metadata is embedded in redacted data of the redacted duplicated video file, which when activated, will direct to a location where the original data is stored.