Vision Transformer attention alignment with human visual perception in aesthetic object evaluation

Clinical Snapshot

Key Findings

• P Value: p < 0.001 for between-head differences and AOI analysis

• Effect Size: Attention head #12 showed strongest alignment across all metrics; heads #7 and #9 showed greatest divergence

• Primary Outcome: Correlation between human visual attention and ViT attention mechanisms during aesthetic evaluation

• Nnt Or Sensitivity: Lift values of +30 to +40 percentage points for optimal attention heads (#12, #1, #3) in object region focus

• Confidence Interval: Not explicitly reported for primary correlation measures

Clinical Application

High technical complexity requiring specialised eye-tracking equipment and AI model expertise, limiting practical implementation No direct relevance to Australian healthcare system, PBS, or TGA regulations. Potential research applications in digital health interface design Limited applicability - primarily relevant to computer vision researchers and human-computer interaction specialists rather than clinical populations

Abstract

Visual attention mechanisms play a crucial role in human perception and aesthetic evaluation. Recent advances in Vision Transformers (ViTs) have demonstrated remarkable capabilities in computer vision tasks, yet their alignment with human visual attention patterns remains underexplored, particularly in aesthetic contexts. This study investigates the correlation between human visual attention and ViT attention mechanisms when evaluating handcrafted objects. We conducted an eye-tracking experiment with 30 participants (9 female, 21 male, mean age 24.6 years) who viewed 20 artisanal objects comprising basketry bags and ginger jars. Using a Pupil Labs eye-tracker, we recorded gaze patterns and generated heatmaps representing human visual attention. Simultaneously, we analyzed the same objects using a pre-trained ViT model with DINO (Self-DIstillation with NO Labels), extracting attention maps from each of the 12 attention heads. We compared human and ViT attention distributions using four complementary metrics-Kullback-Leibler divergence, Structural Similarity Index (SSIM), Pearson's Correlation Coefficient (CC), and Similarity (SIM)-across varying Gaussian parameters ([Formula: see text]), yielding 1,152,000 distance evaluations. Additionally, we performed Areas of Interest (AOI) analysis to quantify ViT attention concentration within object regions. Statistical analysis revealed optimal correlation at [Formula: see text], with attention head #12 showing the strongest alignment with human visual patterns across all metrics. Significant differences were found between attention heads, with heads #7 and #9 demonstrating the greatest divergence from human attention ([Formula: see text]), Tukey HSD test). AOI analysis confirmed that all ViT heads concentrated attention significantly more within object regions than background areas ([Formula: see text]), with heads #12, #1, and #3 achieving lift values of +30 to +40 percentage points. Results indicate that while ViTs exhibit more global attention patterns compared to human focal attention, certain attention heads can approximate human visual behavior, particularly for specific object features like buckles in basketry items. These findings suggest potential applications of ViT attention mechanisms in product design and aesthetic evaluation, while highlighting fundamental differences in attention strategies between human perception and current AI models.

References

1. 1.Carrasco, M., González-Martín, C., Aranda, J., & Oliveros, L. (2024). Vision Transformer attention alignment with human visual perception in aesthetic object evaluation. PLoS One. https://doi.org/10.1371/journal.pone.0344006