VFaith: Do Large Multimodal Models Really Reason on Seen Images Rather than Previous Memories?

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Hauptverfasser: Yu, Jiachen, Zhan, Yufei, Wu, Ziheng, Zhu, Yousong, Wang, Jinqiao, Qiu, Minghui
Format: Preprint
Veröffentlicht: 2025
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author Yu, Jiachen
Zhan, Yufei
Wu, Ziheng
Zhu, Yousong
Wang, Jinqiao
Qiu, Minghui
author_facet Yu, Jiachen
Zhan, Yufei
Wu, Ziheng
Zhu, Yousong
Wang, Jinqiao
Qiu, Minghui
contents Recent extensive works have demonstrated that by introducing long CoT, the capabilities of MLLMs to solve complex problems can be effectively enhanced. However, the reasons for the effectiveness of such paradigms remain unclear. It is challenging to analysis with quantitative results how much the model's specific extraction of visual cues and its subsequent so-called reasoning during inference process contribute to the performance improvements. Therefore, evaluating the faithfulness of MLLMs' reasoning to visual information is crucial. To address this issue, we first present a cue-driven automatic and controllable editing pipeline with the help of GPT-Image-1. It enables the automatic and precise editing of specific visual cues based on the instruction. Furthermore, we introduce VFaith-Bench, the first benchmark to evaluate MLLMs' visual reasoning capabilities and analyze the source of such capabilities with an emphasis on the visual faithfulness. Using the designed pipeline, we constructed comparative question-answer pairs by altering the visual cues in images that are crucial for solving the original reasoning problem, thereby changing the question's answer. By testing similar questions with images that have different details, the average accuracy reflects the model's visual reasoning ability, while the difference in accuracy before and after editing the test set images effectively reveals the relationship between the model's reasoning ability and visual perception. We further designed specific metrics to expose this relationship. VFaith-Bench includes 755 entries divided into five distinct subsets, along with an additional human-labeled perception task. We conducted in-depth testing and analysis of existing mainstream flagship models and prominent open-source model series/reasoning models on VFaith-Bench, further investigating the underlying factors of their reasoning capabilities.
format Preprint
id arxiv_https___arxiv_org_abs_2506_11571
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle VFaith: Do Large Multimodal Models Really Reason on Seen Images Rather than Previous Memories?
Yu, Jiachen
Zhan, Yufei
Wu, Ziheng
Zhu, Yousong
Wang, Jinqiao
Qiu, Minghui
Computer Vision and Pattern Recognition
Recent extensive works have demonstrated that by introducing long CoT, the capabilities of MLLMs to solve complex problems can be effectively enhanced. However, the reasons for the effectiveness of such paradigms remain unclear. It is challenging to analysis with quantitative results how much the model's specific extraction of visual cues and its subsequent so-called reasoning during inference process contribute to the performance improvements. Therefore, evaluating the faithfulness of MLLMs' reasoning to visual information is crucial. To address this issue, we first present a cue-driven automatic and controllable editing pipeline with the help of GPT-Image-1. It enables the automatic and precise editing of specific visual cues based on the instruction. Furthermore, we introduce VFaith-Bench, the first benchmark to evaluate MLLMs' visual reasoning capabilities and analyze the source of such capabilities with an emphasis on the visual faithfulness. Using the designed pipeline, we constructed comparative question-answer pairs by altering the visual cues in images that are crucial for solving the original reasoning problem, thereby changing the question's answer. By testing similar questions with images that have different details, the average accuracy reflects the model's visual reasoning ability, while the difference in accuracy before and after editing the test set images effectively reveals the relationship between the model's reasoning ability and visual perception. We further designed specific metrics to expose this relationship. VFaith-Bench includes 755 entries divided into five distinct subsets, along with an additional human-labeled perception task. We conducted in-depth testing and analysis of existing mainstream flagship models and prominent open-source model series/reasoning models on VFaith-Bench, further investigating the underlying factors of their reasoning capabilities.
title VFaith: Do Large Multimodal Models Really Reason on Seen Images Rather than Previous Memories?
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2506.11571