Face Authentication Group Registration via Orientation Filtering
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Solution Overview
Problem
Existing face authentication systems face challenges in efficiently registering groups, particularly when faces are photographed outdoors or in crowded environments, leading to potential misassociation of non-target faces with those to be authenticated, resulting in time-consuming registration processes.
Innovation Solution
An information processing system comprising a face detection unit, a determination unit, and a registration information generation unit that detects faces, determines whether they satisfy predetermined conditions such as line-of-sight direction and orientation, and generates registration information associating partial images of faces that meet these conditions with a group identifier for efficient group authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If face images are registered on a group basis in crowded environments, then registration efficiency is improved, but accuracy deteriorates due to potential misassociation of non-target faces
Solution Approach 1:
The patent segments the face registration process into distinct stages: detection, determination, and registration. The determination unit acts as a filter between detection and registration, evaluating whether each detected face satisfies predetermined conditions before being associated with the group identifier. This segmentation allows efficient batch processing while maintaining accuracy through intermediate validation.
Solution Approach 2:
The determination unit serves as an intermediary component between the face detection unit and the registration information generation unit. It evaluates detected faces against predetermined conditions (such as line-of-sight direction and orientation) and only passes faces that satisfy these conditions to the registration stage. This intermediary validation step prevents misassociation of non-target faces while enabling efficient group-based registration.
2Speed
If faces are detected and registered without predetermined conditions, then registration speed is improved, but reliability deteriorates due to inclusion of irrelevant faces
Solution Approach 1:
The patent applies preliminary action by establishing predetermined conditions (such as line-of-sight direction and face orientation) that must be satisfied before face registration occurs. The determination unit evaluates these conditions in advance during the detection phase, ensuring that only faces meeting the criteria are registered. This preliminary filtering maintains registration speed by using efficient condition checks while guaranteeing authentication reliability through pre-validation.
3Loss of time
If multiple faces are simultaneously detected and registered, then processing time is reduced, but error rate increases due to mistaken association
Solution Approach 1:
The determination unit provides feedback control in the face registration process by continuously evaluating detected faces against predetermined conditions. This feedback mechanism allows the system to process multiple faces simultaneously while maintaining precision, as each face is independently validated before registration. The feedback loop ensures that faces not meeting the criteria are excluded, preventing mistaken associations even during batch processing.
Data Source
AI summary
A group to be authenticated in face authentication is efficiently registered in a system. An information processing system includes a face detection unit configured to detect a face from an image in which a plurality of faces of persons are shown, a determination unit configured to determine whether or not the face detected by the face detection unit satisfies a predetermined condition, and a registration information generation unit configured to generate registration information, the registration information being information in which a partial image of each of a plurality of faces that have been determined to satisfy the predetermined condition is associated with an identifier identifying a group to be authenticated in face authentication.