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Vision-language models (VLMs) work well in tasks ranging from image captioning to visual question answering (VQA), yet they struggle with spatial reasoning, a key skill for understanding our physical world that humans excel at. We find that…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Michael Ogezi , Freda Shi

CAPTCHA is a human-centred test to distinguish a human operator from bots, attacking programs, or other computerised agents that tries to imitate human intelligence. In this research, we investigate a way to crack visual CAPTCHA tests by an…

Computer Vision and Pattern Recognition · Computer Science 2020-06-26 Zahra Noury , Mahdi Rezaei

Spatial reasoning is a core aspect of human intelligence that allows perception, inference and planning in 3D environments. However, current vision-language models (VLMs) struggle to maintain geometric coherence and cross-view consistency…

Artificial Intelligence · Computer Science 2025-12-03 Qiyao Xue , Weichen Liu , Shiqi Wang , Haoming Wang , Yuyang Wu , Wei Gao

Spatial reasoning is foundational for Vision-Language Models (VLMs), particularly when deployed as Vision-Language-Action (VLA) agents in physical environments. However, existing benchmarks predominantly focus on elementary, single-hop…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Youngwan Lee , Soojin Jang , Yoorhim Cho , Seunghwan Lee , Yong-Ju Lee , Sung Ju Hwang

Spatial understanding has been a challenging task for existing Multi-modal Large Language Models~(MLLMs). Previous methods leverage large-scale MLLM finetuning to enhance MLLM's spatial understanding ability. In this paper, we present a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Hsiang-Wei Huang , Jen-Hao Cheng , Kuang-Ming Chen , Cheng-Yen Yang , Bahaa Alattar , Yi-Ru Lin , Pyongkun Kim , Sangwon Kim , Kwangju Kim , Chung-I Huang , Jenq-Neng Hwang

Spatial Reasoning is an important component of human cognition and is an area in which the latest Vision-language models (VLMs) show signs of difficulty. The current analysis works use image captioning tasks and visual question answering.…

Computation and Language · Computer Science 2025-02-10 Akshar Tumu , Parisa Kordjamshidi

Visual Spatial Reasoning (VSR) is a core human cognitive ability and a critical requirement for advancing embodied intelligence and autonomous systems. Despite recent progress in Vision-Language Models (VLMs), achieving human-level VSR…

Large Language Models (LLMs) have undergone rapid progress, largely attributed to reinforcement learning on complex reasoning tasks. In contrast, while spatial intelligence is fundamental for Vision-Language Models (VLMs) in real-world…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Zijian Song , Xiaoxin Lin , Qiuming Huang , Sihan Qin , Guangrun Wang , Liang Lin

Over the last years, most websites on which users can register (e.g., email providers and social networks) adopted CAPTCHAs (Completely Automated Public Turing test to tell Computers and Humans Apart) as a countermeasure against automated…

Human-Computer Interaction · Computer Science 2015-12-18 Mauro Conti , Claudio Guarisco , Riccardo Spolaor

Multimodal large language models (MLLMs) have achieved remarkable progress in vision-language tasks, but they continue to struggle with spatial understanding. Existing spatial MLLMs often rely on explicit 3D inputs or architecture-specific…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Hunar Batra , Haoqin Tu , Hardy Chen , Yuanze Lin , Cihang Xie , Ronald Clark

Spatial reasoning remains a fundamental challenge for Vision-Language Models (VLMs), with current approaches struggling to achieve robust performance despite recent advances. We identify that this limitation stems from a critical gap:…

Computer Vision and Pattern Recognition · Computer Science 2025-10-10 Hongxing Li , Dingming Li , Zixuan Wang , Yuchen Yan , Hang Wu , Wenqi Zhang , Yongliang Shen , Weiming Lu , Jun Xiao , Yueting Zhuang

Spatial reasoning is a key aspect of cognitive psychology and remains a bottleneck for current vision-language models (VLMs). While extensive research has aimed to evaluate or improve VLMs' understanding of basic spatial relations, such as…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Mengdi Jia , Zekun Qi , Shaochen Zhang , Wenyao Zhang , Xinqiang Yu , Jiawei He , He Wang , Li Yi

The proliferation of the Internet and mobile devices has resulted in malicious bots access to genuine resources and data. Bots may instigate phishing, unauthorized access, denial-of-service, and spoofing attacks to mention a few.…

Cryptography and Security · Computer Science 2023-07-21 N. Tariq , F. A. Khan , S. A. Moqurrab , G. Srivastava

Recent advancements in Spatial Intelligence (SI) have predominantly relied on Vision-Language Models (VLMs), yet a critical question remains: does spatial understanding originate from visual encoders or the fundamental reasoning backbone?…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Zhongbin Guo , Zhen Yang , Yushan Li , Xinyue Zhang , Wenyu Gao , Jiacheng Wang , Chengzhi Li , Xiangrui Liu , Ping Jian

Text CAPTCHA has been an effective means to protect online systems from spams and abuses caused by automatic scripts which pretend to be human beings. However, nearly all the Text CAPTCHA designs in nowadays are based on English characters,…

Human-Computer Interaction · Computer Science 2016-12-06 Junnan Yu , Xuna Ma , Ting Han

We introduce compute-grounded reasoning (CGR), a design paradigm for spatial-aware research agents in which every answerable sub-problem is resolved by deterministic computation before a language model is asked to generate. Spatial Atlas…

Artificial Intelligence · Computer Science 2026-04-16 Arun Sharma

Multimodal Large Language Models (MLLMs) have made rapid progress in spatial intelligence, yet existing spatial reasoning benchmarks largely assume pristine visual inputs and overlook the degradations that commonly occur in real-world…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Xiaolong Zhou , Yifei Liu , Ziyang Gong , Jiarui Li , Qiyue Zhao , Muyao Niu , Yuanyuan Gao , Le Ma , Xue Yang , Hongjie Zhang , Zhihang Zhong

The spatial reasoning task aims to reason about the spatial relationships in 2D and 3D space, which is a fundamental capability for Visual Question Answering (VQA) and robotics. Although vision language models (VLMs) have developed rapidly…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Xun Liang , Xin Guo , Zhongming Jin , Weihang Pan , Penghui Shang , Deng Cai , Binbin Lin , Jieping Ye

Humans possess the visual-spatial intelligence to remember spaces from sequential visual observations. However, can Multimodal Large Language Models (MLLMs) trained on million-scale video datasets also ``think in space'' from videos? We…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Jihan Yang , Shusheng Yang , Anjali W. Gupta , Rilyn Han , Li Fei-Fei , Saining Xie

Spatiotemporal intelligence in autonomous driving (AD) requires an agent to integrate multi-view observations into a coherent scene representation, maintain object continuity across viewpoints and time, and reason about spatial relations,…