Video Authenticity Verification via Embedded Time Codes
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Solution Overview
Problem
Current methods for authenticating the originality of video or photograph files, such as timestamping and geotagging, are not foolproof as they can be easily manipulated, and existing solutions like including a newspaper front page or human gesture verification are not reliable for verifying date and location.
Innovation Solution
A verification system that generates time-sensitive and location-sensitive codes, which are publicly broadcast and incorporated into video recordings, allowing for verification by matching the code's timestamp and geotag with the publication timestamp and location, using methods like automatic code incorporation via camera functions or manual gestures, and publishing the recording or its hash value to a public log for verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If timestamping and geotagging are used to authenticate video or photograph, then the originality verification is improved, but the method is vulnerable to manipulation and not foolproof
Solution Approach 1:
The patent applies preliminary action by embedding verification codes (such as zoom patterns, focus adjustment patterns, or light flash patterns) into the video recording at the moment of creation. These codes are incorporated into the video data itself during the recording process, allowing future verification of the recording's authenticity without relying on easily manipulated metadata timestamps or geotags.
Solution Approach 2:
The patent uses an intermediary verification code as a mediator between the recording device and the verification system. This code (embedded through camera functions like zoom, focus, or light flashes) serves as a trusted intermediary that proves the recording was made by an authentic device at a specific time, bridging the gap between the recording and the verification process without being easily manipulated.
2Measurement precision
If newspaper front page is included in video or photograph for authentication, then the date verification is improved, but the method is not foolproof and does not fully verify the photograph date
Solution Approach 1:
The patent replaces the mechanical/manual method of including physical newspaper front pages in recordings with an automated electronic verification system. The system automatically embeds verification codes (zoom patterns, focus patterns, or light flash patterns) into the video data through camera functions, eliminating the need for manual inclusion of external date references and providing more reliable automated verification.
3Reliability
If manual gesture verification is used to verify human presence, then the human verification is improved, but the solution cannot be used for verifying date or location
Solution Approach 1:
The patent applies universality by creating a verification system that serves multiple functions: it verifies human presence through gesture recognition, verifies the date and time of recording through timestamp correlation with the verification code, and verifies the location through geotagging. The same embedded verification code structure is used across all these verification types, making the system versatile and multi-functional rather than limited to a single verification purpose.
Data Source
AI summary
A verification system includes: a code generation server publicizing time stamped codes; a proving device, including a video camera, that acquires a published time stamped code from the code generation server, and, while recording a video, incorporates the acquired time stamped code into the video; and a verifying device that receives the video, extracts the time stamped code from the content of the video, compares the time stamped code to published time stamped codes, and displays a verification of the published time stamped code.