Learning to Localize Objects Improves Spatial Reasoning in Visual-LLMs

• URL: http://arxiv.org/abs/2404.07449v1
• Date: Thu, 11 Apr 2024 03:09:34 GMT
• Title: Learning to Localize Objects Improves Spatial Reasoning in Visual-LLMs
• Authors: Kanchana Ranasinghe, Satya Narayan Shukla, Omid Poursaeed, Michael S. Ryoo, Tsung-Yu Lin,
• Abstract summary: Integration of Large Language Models (LLMs) into visual domain tasks, resulting in visual-LLMs (V-LLMs), has enabled exceptional performance in vision-language tasks. However, existing V-LLMs demonstrate weak spatial reasoning and localization awareness. We explore how image-space coordinate based instruction fine-tuning objectives could inject spatial awareness into V-LLMs.
• Score: 38.02017186215372
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Integration of Large Language Models (LLMs) into visual domain tasks, resulting in visual-LLMs (V-LLMs), has enabled exceptional performance in vision-language tasks, particularly for visual question answering (VQA). However, existing V-LLMs (e.g. BLIP-2, LLaVA) demonstrate weak spatial reasoning and localization awareness. Despite generating highly descriptive and elaborate textual answers, these models fail at simple tasks like distinguishing a left vs right location. In this work, we explore how image-space coordinate based instruction fine-tuning objectives could inject spatial awareness into V-LLMs. We discover optimal coordinate representations, data-efficient instruction fine-tuning objectives, and pseudo-data generation strategies that lead to improved spatial awareness in V-LLMs. Additionally, our resulting model improves VQA across image and video domains, reduces undesired hallucination, and generates better contextual object descriptions. Experiments across 5 vision-language tasks involving 14 different datasets establish the clear performance improvements achieved by our proposed framework.

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