SemVink: Advancing VLMs' Semantic Understanding of Optical Illusions via Visual Global Thinking
On the map: LLM reasoning → Multimodal reasoning
Abstract (arXiv)
Vision-language models (VLMs) excel in semantic tasks but falter at a core human capability: detecting hidden content in optical illusions or AI-generated images through perceptual adjustments like zooming. We introduce HC-Bench, a benchmark of 112 images with hidden text, objects, and illusions, revealing that leading VLMs achieve near-zero accuracy (0-5.36%)-even with explicit prompting. Humans resolve such ambiguities instinctively, yet VLMs fail due to an overreliance on high-level semantics. Strikingly, we propose SemVink (Semantic Visual Thinking) by simply scaling images to low resolutions (32-128 pixels), which unlocks >99% accuracy by eliminating redundant visual noise. This exposes a critical architectural flaw: VLMs prioritize abstract reasoning over low-level visual operations crucial for real-world robustness. Our work urges a shift toward hybrid models integrating multi-scale processing, bridging the gap between computational vision and human cognition for applications in medical imaging, security, and beyond.
Key facts. Cited by 6 papers in the map (data through 14 Oct 2026). Placed in Multimodal reasoning, one of 17 directions in LLM reasoning. Builds on 25 of its 45 references that are in the map. First posted on arXiv 3 Jun 2025.
Builds on
25 of 45 references.
References · 25
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13 more
- 2024FastVLM: Efficient Vision Encoding for Vision Language Modelscited by 77
- 2025A Survey of State of the Art Large Vision Language Models: Alignment, Benchmark, Evaluations and Challengescited by 47
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Built on by
Citing papers per year: 2025: 1; 2026: 5.
6 papers.
- 2025VACoT: Rethinking Visual Data Augmentation with VLMscited by 9
- 2026Gated Differentiable Working Memory for Long-Context Language Modelingcited by 6
- 2026Now You See the Hate: Adaptive View Retrieval for Hidden Hateful Illusionscited by 1
- 2026ArmorOCR: Grounded Adversarial Visual Perception via Observation-Transferred Self-Distillationcited by 0
- 2026ControlTrace: Recovering Control Fields for Hidden-Content Recognitioncited by 0
- 2026When MLLMs miss what humans read: diagnosing and learning to read squint textcited by 0
- 2026When MLLMs miss what humans read: diagnosing and learning to read squint text9 Oct 2026
- 2026ControlTrace: Recovering Control Fields for Hidden-Content Recognition28 Sep 2026
- 2026ArmorOCR: Grounded Adversarial Visual Perception via Observation-Transferred Self-Distillation20 Aug 2026
- 2026Now You See the Hate: Adaptive View Retrieval for Hidden Hateful Illusions21 Jul 2026
- 2026Gated Differentiable Working Memory for Long-Context Language Modeling19 Jan 2026
- 2025VACoT: Rethinking Visual Data Augmentation with VLMs2 Dec 2025
Similar, not cited
Close in wording, no citation either way
- 2024IllusionVQA: A Challenging Optical Illusion Dataset for Vision Language Models
- 2026Can LVLMs Uncover the Truth Behind Visual Illusions? An Analysis of Perceptual and Reasoning Capabilities
- 2026Seeing the Evidence, Missing the Answer: Tool-Guided Vision-Language Models on Visual Illusions
- 2026Seeing Is Believing? A Benchmark for Multimodal Large Language Models on Visual Illusions and Anomalies
- 2025VLMs have Tunnel Vision: Evaluating Nonlocal Visual Reasoning in Leading VLMs
- 2026Illusion-Aware Visual Preprocessing and Anti-Illusion Prompting for Classic Illusion Understanding in Vision-Language Models
- 2025VisRes Bench: On Evaluating the Visual Reasoning Capabilities of VLMs
- 2026Beyond Shortcuts: Mitigating Visual Illusions in Frozen VLMs via Qualitative Reasoning