arxivcs.CV2026-07-21
MissingBench-Verified: Probing Vision-Language Models' Inability to Detect Missing Object Parts
Wenqi Marshall Guo, Qingyun Qian, Shiyu Zhou, Guoping Luo, Shan Du
Vision Language Models (VLMs) are well known for hallucinating non-existent objects in images. Objects with missing parts present a unique challenge for VLMs, stemming from both real-world knowledge bias and the scarcity of such images in training data. We present MissingBench-Ve…