Image Access Management via Feature Vector Browsing Levels
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Solution Overview
Problem
Existing image access management systems fail to appropriately manage access rights by not adequately adjusting the information dimension of video features based on the access authority of requesters, leading to potential unauthorized access to sensitive information.
Innovation Solution
An image access management device that includes a feature calculation unit, an access management unit, and an image generation unit, which extracts feature vectors from target images, determines browsing levels based on access authority, and processes these vectors to generate final images corresponding to the access authority, thereby providing an appropriate range of information to authorized users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If full feature vectors are provided to all users, then information completeness is improved, but security and access control deteriorate
Solution Approach 1:
The patent applies local quality by providing different feature information to different users based on their roles. Management terminals receive complete feature vectors for full image reconstruction, while surveillance terminals receive only specific feature components (e.g., motion vectors, color histograms) that enable monitoring without revealing identifiable personal information. This resolves the contradiction by making information quality location-specific to each user's access needs.
Solution Approach 2:
The patent segments feature vectors into multiple components with different access levels. Feature vectors are divided into identification-related features (face features, body measurements) and monitoring-related features (motion patterns, color distributions). This segmentation allows the system to provide monitoring functionality to surveillance terminals while restricting access to identification features, thus maintaining both information completeness for authorized users and security against unauthorized access.
2Measurement precision
If detailed feature vectors are extracted and stored, then image analysis capability is improved, but information security and access control complexity worsen
Solution Approach 1:
The patent applies preliminary action by pre-defining access authority levels and associating them with specific feature components before actual image analysis occurs. The system establishes a mapping between management roles (surveillance operator, security manager, administrator) and permitted feature types in advance. This preliminary configuration simplifies access control management during operation, as the system automatically applies predefined rules rather than requiring complex real-time authorization decisions.
Solution Approach 2:
The patent implements dynamic access control where the feature information provided to terminals changes based on the requesting terminal's identified access authority. The access management unit dynamically determines which feature components to extract and transmit based on real-time authentication results. This dynamic approach maintains high image analysis capability for authorized users while automatically adjusting information disclosure to prevent unauthorized access, reducing the need for complex manual access control configurations.
Data Source
AI summary
In a case of receiving an access request to a target image, an image access management device can provide an appropriate access right holder with an appropriate range of information by determining a browsing level with respect to the target image according to an access authority or purpose included in the access request to the target image, by an access management unit, by generating a final image that corresponds to the access authority by processing the feature vector according to the browsing level, and providing the generated final image as a response to the access request, by an image generation unit.