Media Region-of-Interest Encryption for Selective Access
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Solution Overview
Problem
Existing multimedia content sharing technologies either prohibit access or grant access as a single, granular unit, failing to provide nuanced control over access to specific regions of interest (ROIs) within media items.
Innovation Solution
Detecting ROIs in media content, processing them through obfuscation and encryption, and creating multiple copies with varying access levels based on user rights, allowing selective decryption and rendering of media content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If access control is applied to the entire media asset as a single unit, then security management is simplified, but nuanced control over specific regions of interest is lost
Solution Approach 1:
The patent segments the media asset into multiple regions, with specific regions of interest identified and marked within the media item metadata. This allows different access controls to be applied to different regions rather than treating the entire media asset as a single unit, enabling nuanced region-specific access control while maintaining manageable security through structured metadata organization.
Solution Approach 2:
The patent implements local quality by applying different encryption and access control policies to different regions within the media asset. Regions of interest containing sensitive content can have enhanced protection while other regions maintain standard access, allowing tailored security measures for specific areas without affecting the entire media asset.
2Reliability
If high-quality ROI data is encrypted and protected, then data privacy is enhanced, but unauthorized users cannot access any content including non-sensitive regions
Solution Approach 1:
The patent segments the media asset into protected regions of interest and non-protected regions. When a user lacks authorization for ROI content, the system selectively decrypts and provides access only to non-sensitive regions while maintaining encryption for sensitive areas. This segmentation enables partial content delivery, ensuring unauthorized users can still access non-sensitive portions without compromising overall data privacy.
Solution Approach 2:
The patent extracts and separates the regions of interest from the rest of the media asset through metadata markers. This extraction allows the system to apply differential access control - removing protection only for authorized users while maintaining it for unauthorized users, thereby preserving content accessibility for non-sensitive regions while enhancing privacy for sensitive regions.
3Adaptability or versatility
If multiple copies of ROI are created with different access levels, then flexible access control is achieved, but file size and processing complexity increase
Solution Approach 1:
Instead of creating multiple physical copies of ROI data, the patent adds an access control dimension through metadata layers. The media item metadata contains region markers and access control information that indicate different access levels for different regions. This dimensional approach to access control provides flexible multi-level protection without duplicating the actual media data, thereby reducing file size and processing complexity compared to maintaining multiple full copies.
Data Source
AI summary
Techniques are disclosed for representing media items in a way that protects content representing information deemed sensitive by media item authors and allows media consumers both those with access rights to the sensitive content and those that do not have such access rights, to access content of the media item. They also provide for generating alternative representations that may be desired for different applications. According to these techniques, one or more regions of interest (ROI) are detected from content of the media item, and one or more obfuscated copies or alternative versions of the ROI(s) are generated. Source content of the ROI(s) can be encrypted and placed in a file representing the media item. The obfuscated copies/variants of the ROI(s) are created and then obscured. These copies/variants of the ROI(s) can be placed in the file representing the media item. And, of course, content of the media item corresponding to regions outside the ROI(s) may be represented in the file. These techniques allow media consumption devices of all kinds to access the media file. For those media consumption devices that have certain access rights to process and/or decrypt specific ROI variants, the media consumption device may decode the respective obscured ROI data and compile a recovered media item by combining the respective obscured ROI data with data of the non-ROI regions. For media consumption devices that do not possess access rights to process and/or decrypt the encrypted ROI, the media consumption device may only process the non-ROI regions and potentially default representation of the obscured ROI data. Other applications provide for controller presentation of alternative representations of ROI content under application control, such as, for example, advertisement insertions or marketing overlays.