Facial Recognition Training Dataset Adaptation with Limited Feedback

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Solution Overview

Problem

Facial recognition systems struggle to adapt to short-term and long-term face variations such as head pose, dressing, lighting conditions, and aging, leading to reduced accuracy and efficiency.

Innovation Solution

A training dataset is updated using limited user feedback to adapt machine learning models, where sample scores are modified based on match scores and user feedback, allowing selective reduction of less valuable samples, and incorporating new samples while maintaining a manageable dataset size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the training dataset is continuously updated to adapt to face variations, then the adaptability and accuracy of the facial recognition system is improved, but the computation complexity and resource requirements increase

Engineering Contradiction:
Improveadaptability to face variationsVSAvoidcomputation complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system extracts and removes less valuable samples from the training dataset based on sample scores, retaining only the most informative samples. This extraction process reduces dataset size and computation complexity while preserving adaptability to face variations by keeping high-quality diverse samples.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system dynamically adjusts sample scores as parameters that reflect the value and diversity of each training sample. By changing these score parameters based on match scores and feedback, the system optimizes the training dataset composition to maintain adaptability while reducing computational burden through selective sample retention.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If more diverse samples are added to the training dataset to improve recognition accuracy, then the recognition performance is enhanced, but the dataset size and processing time increase

Engineering Contradiction:
Improverecognition accuracyVSAvoidprocessing time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system extracts redundant and low-value samples from the training dataset using sample scoring mechanisms. By removing these less informative samples, the system reduces processing time while maintaining recognition accuracy through the retention of high-quality diverse samples that contribute most to accurate face recognition.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system applies partial action by selectively processing and retaining only the most valuable samples rather than processing the entire dataset uniformly. This approach achieves high recognition accuracy by focusing computational resources on the most informative samples, thereby reducing overall processing time.

Inventive Principle:
Principle #16Partial or excessive action

3Productivity

If the training dataset is reduced to decrease computation complexity, then the processing efficiency is improved, but the quality and diversity of the dataset may deteriorate

Engineering Contradiction:
Improveprocessing efficiencyVSAvoiddataset quality
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system applies local quality by differentiating and scoring individual samples based on their specific characteristics and value to the training process. High-scoring samples that contribute most to dataset quality and diversity are retained, while low-scoring samples are removed. This selective approach maintains dataset quality while improving processing efficiency through reduced dataset size.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system uses sample scores as dynamic parameters to evaluate and select training samples. By changing and updating these score parameters based on match scores and feedback, the system identifies and retains high-quality diverse samples, ensuring dataset reliability is maintained even as the overall dataset size is reduced for improved processing efficiency.

Inventive Principle:
Principle #35Parameter changes

4Manufacturing precision

If user feedback is collected to improve model accuracy, then the recognition performance is enhanced, but the system complexity and feedback processing overhead increase

Engineering Contradiction:
Improverecognition performanceVSAvoidsystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system implements a feedback mechanism where user feedback on match results is collected and used to update sample scores in the training dataset. This feedback loop enhances recognition performance by continuously refining the training data quality, while the automated scoring and update processes manage system complexity through systematic handling of feedback information.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12455941B2Systems and methods for facial recognition training dataset adaptation with limited user feedback in surveillance systems
Publication Date: 2025.10.28 FORTINET INC
  • US12455941B2 patent drawing
  • US12455941B2 patent drawing
  • US12455941B2 patent drawing

AI summary

Various embodiments provide systems and methods for updating a training dataset so that the generated machine learning model can adapt to both short-term and long-term face variations including, for example, head pose, dressing, lighting conditions, and/or aging.