Open Access

A Novel Local Feature Optimization Approach for Accurate Scene Text Recognition Using Scale-Aware Representation Learning

4 Department of Computer Science Colombo Institute of Technology Colombo, Sri Lanka
4 Faculty of Computing and Artificial Intelligence University of Digital Sciences Kandy, Sri Lanka

Abstract

Scene text recognition has emerged as a fundamental research domain in computer vision because textual information embedded in natural images provides valuable semantic cues for intelligent transportation, document digitization, autonomous navigation, assistive technologies, industrial automation, and multimedia retrieval. Despite substantial advances in machine learning and image analysis, accurately recognizing scene text remains a challenging task due to variations in illumination, font style, viewing angle, scale, background complexity, occlusion, and image degradation. Conventional feature extraction methods often struggle to preserve discriminative local characteristics while maintaining robustness against scale variations, leading to decreased recognition accuracy under unconstrained environmental conditions. Existing research has investigated multiple feature extraction and selection techniques, including scale-invariant descriptors, discriminative feature ranking, visual codebooks, and machine learning-based optimization strategies. However, efficient integration of scale-aware representation learning with adaptive local feature optimization remains insufficiently explored.

This research proposes a novel local feature optimization approach that combines scale-aware representation learning with adaptive feature selection to improve scene text recognition performance. The proposed framework systematically integrates multi-scale feature extraction, discriminative feature evaluation, optimized feature representation, hierarchical feature encoding, and adaptive classification. Instead of relying solely on dense feature extraction, the framework dynamically identifies highly informative local descriptors while suppressing redundant and noisy information. Feature ranking mechanisms, local descriptor optimization, and representation refinement collectively improve recognition robustness across varying image conditions.

The proposed methodology is theoretically developed through comprehensive synthesis of established feature selection, computer vision, visual recognition, and scene text recognition literature. The framework emphasizes computational efficiency while preserving discriminative information across multiple spatial scales. Analytical evaluation demonstrates that adaptive optimization significantly enhances feature stability, reduces feature redundancy, improves classification confidence, and increases recognition consistency in complex visual environments.

The research contributes a unified conceptual framework that bridges classical local feature engineering with scale-aware representation learning, providing an effective direction for future intelligent scene text recognition systems. The proposed architecture offers improved generalization capability, scalable implementation, and practical applicability for real-world computer vision systems operating under challenging environmental conditions.

Keywords

References

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