Selective Video Encryption for Sensitive Region Protection
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Solution Overview
Problem
Encrypting all image data in video streams is resource-intensive and introduces delays, while encrypting only sensitive data without compressing insensitive data can reduce processing overhead and protect privacy.
Innovation Solution
A selective encryption system that identifies sensitive image data regions, such as facial features or motion, and encrypts only those regions while compressing the rest, using AI/ML techniques for precise detection and encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all image data in video streams is encrypted, then sensitive information is protected, but resource consumption and transmission delay increase significantly
Solution Approach 1:
The patent divides the video frame into multiple regions and selectively encrypts only those regions containing sensitive information (such as facial features, text, or private objects) while leaving other regions unencrypted. This segmentation approach protects sensitive data without requiring encryption of the entire video stream, thereby reducing computational overhead and transmission delay while maintaining security for critical information.
2Reliability
If all image data is encrypted, then privacy is protected, but processing time and computational resources increase
Solution Approach 1:
The patent extracts and identifies specific sensitive regions within the video frame using image analysis techniques (such as facial detection, text detection, or object recognition). Only these extracted sensitive regions are subjected to encryption, while the remainder of the video data is processed and transmitted without encryption. This extraction approach minimizes processing time by focusing computational resources only on the necessary portions of the video stream.
3Reliability
If selective encryption is applied without compression, then sensitive data is protected, but file size increases
Solution Approach 1:
The patent applies different processing qualities to different regions of the video frame: encrypted processing for sensitive regions and compressed processing for non-sensitive regions. This local quality differentiation allows the system to protect sensitive data through encryption while simultaneously reducing the overall data size through compression of the remaining unencrypted portions, thereby optimizing both security and transmission efficiency.
Data Source
AI summary
Disclosed is a selective encryption system that selectively encrypts sensitive image data within frames of a video stream and compresses other insensitive image data within the frames in order to generate and distribute a partially encrypted video stream that protects the sensitive image data without the time, energy, resource, and size penalty associated with encrypting all image data in all frames of the video stream. The system parses a video stream image into different regions that each contain different image data. The system detects first regions that contain the sensitive image data, encrypts the sensitive image data in the first regions, and compresses the image data in other second regions without encryption. The system distributes a selectively encrypted frame of the video stream that includes the encrypted image data for the first regions and the compressed image data for second regions.