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Record W4413120459 · doi:10.1109/icjece.2025.3589317

Novel Spatial-Edge Residual Attention Model for Face Super-Resolution Enhancement Nouveau modèle d’attention résiduelle spatiale et sur les contours pour l’amélioration de la super-résolution des visages

2025· article· fr· W4413120459 on OpenAlexaffvenue
Majid Ahmadi, Jayanthi Raghavan

Bibliographic record

VenueCanadian Journal of Electrical and Computer Engineering · 2025
Typearticle
Languagefr
FieldComputer Science
TopicFace recognition and analysis
Canadian institutionsUniversity of Windsor
Fundersnot available
KeywordsFace (sociological concept)OpticsPsychologyPhysicsHumanitiesArtPhilosophy

Abstract

fetched live from OpenAlex

The primary goal of face super-resolution (FSR) is to improve the accuracy of individual identification by enhancing low-resolution (LR) face images to produce high-resolution (HR) images. However, restoring high-frequency components is challenging due to the inherent loss of detail in LR images. We propose a novel FSR approach that leverages edge and spatial attention mechanisms to address this. Edge attention focuses on preserving and enhancing edges, which are crucial for maintaining the structural integrity of facial features. Spatial attention highlights and refines important regions within the image, ensuring accurate reconstruction of facial features and improving overall image quality. Our experiments demonstrate that combining edge and spatial attention mechanisms yields superior performance compared to using either mechanism alone. The histogram of oriented gradients (HOGs) is employed to extract edge information, as it captures both edge orientation and overall structure, thus improving sharpness and detail preservation in upscaled images. We extensively trained our model on the CelebA dataset and tested it on the CMU-Multi PIE dataset. The spatial-edge residual attention model consistently produces competitive performance compared to state-of-the-art methods, both qualitatively and quantitatively. Our approach highlights the effectiveness of integrating edge and spatial attention mechanisms for FSR, paving the way for more accurate and visually appealing FSR techniques. Résumé—L’objectif principal de la super-résolution des visages (FSR) est d’améliorer la précision de l’identification individuelle en améliorant les images de visages à basse résolution (LR) afin de produire des images à haute résolution (HR). Cependant, la restauration des composants à haute fréquence est difficile en raison de la perte inhérente de détails dans les images LR. Nous proposons une nouvelle approche FSR qui exploite les mécanismes d’attention spatiale et sur les contours pour remédier à ce problème. L’attention sur les contours se concentre sur la préservation et l’amélioration des contours, qui sont essentiels pour maintenir l’intégrité structurelle des traits du visage. L’attention spatiale met en évidence et affine les zones importantes de l’image, garantissant une reconstruction précise des traits du visage et améliorant la qualité globale de l’image. Nos expériences démontrent que la combinaison des mécanismes d’attention spatiale et sur les contours offre des performances supérieures à celles obtenues en utilisant l’un ou l’autre de ces mécanismes seul. L’histogramme des gradients orientés (HOG) est utilisé pour extraire les informations sur les contours, car il capture à la fois l’orientation des contours et la structure globale, améliorant ainsi la netteté et la préservation des détails dans les images agrandies. Nous avons largement entraîné notre modèle sur l’ensemble de données CelebA et l’avons testé sur l’ensemble de données CMU-Multi PIE. Le modèle d’attention résiduelle spatiale-contour produit systématiquement des performances compétitives par rapport aux méthodes de pointe, tant sur le plan qualitatif que quantitatif. Notre approche met en évidence l’efficacité de l’intégration des mécanismes d’attention spatiale et de bord pour le FSR, ouvrant la voie à des techniques FSR plus précises et plus attrayantes visuellement.

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How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.846
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.028
GPT teacher head0.239
Teacher spread0.211 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2025
Admission routes2
Has abstractyes

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