VCRScore: Image captioning metric based on V\&L Transformers, CLIP, and precision-recall

Fuente: arXiv
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Main Authors: Ruiz, Guillermo, Ramírez, Tania, Moctezuma, Daniela
Format: Preprint
Published: 2025
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author Ruiz, Guillermo
Ramírez, Tania
Moctezuma, Daniela
author_facet Ruiz, Guillermo
Ramírez, Tania
Moctezuma, Daniela
contents Image captioning has become an essential Vision & Language research task. It is about predicting the most accurate caption given a specific image or video. The research community has achieved impressive results by continuously proposing new models and approaches to improve the overall model's performance. Nevertheless, despite increasing proposals, the performance metrics used to measure their advances have remained practically untouched through the years. A probe of that, nowadays metrics like BLEU, METEOR, CIDEr, and ROUGE are still very used, aside from more sophisticated metrics such as BertScore and ClipScore. Hence, it is essential to adjust how are measure the advances, limitations, and scopes of the new image captioning proposals, as well as to adapt new metrics to these new advanced image captioning approaches. This work proposes a new evaluation metric for the image captioning problem. To do that, first, it was generated a human-labeled dataset to assess to which degree the captions correlate with the image's content. Taking these human scores as ground truth, we propose a new metric, and compare it with several well-known metrics, from classical to newer ones. Outperformed results were also found, and interesting insights were presented and discussed.
format Preprint
id arxiv_https___arxiv_org_abs_2501_09155
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle VCRScore: Image captioning metric based on V\&L Transformers, CLIP, and precision-recall
Ruiz, Guillermo
Ramírez, Tania
Moctezuma, Daniela
Computer Vision and Pattern Recognition
Computation and Language
68Txx
I.5; I.4
Image captioning has become an essential Vision & Language research task. It is about predicting the most accurate caption given a specific image or video. The research community has achieved impressive results by continuously proposing new models and approaches to improve the overall model's performance. Nevertheless, despite increasing proposals, the performance metrics used to measure their advances have remained practically untouched through the years. A probe of that, nowadays metrics like BLEU, METEOR, CIDEr, and ROUGE are still very used, aside from more sophisticated metrics such as BertScore and ClipScore. Hence, it is essential to adjust how are measure the advances, limitations, and scopes of the new image captioning proposals, as well as to adapt new metrics to these new advanced image captioning approaches. This work proposes a new evaluation metric for the image captioning problem. To do that, first, it was generated a human-labeled dataset to assess to which degree the captions correlate with the image's content. Taking these human scores as ground truth, we propose a new metric, and compare it with several well-known metrics, from classical to newer ones. Outperformed results were also found, and interesting insights were presented and discussed.
title VCRScore: Image captioning metric based on V\&L Transformers, CLIP, and precision-recall
topic Computer Vision and Pattern Recognition
Computation and Language
68Txx
I.5; I.4
url https://arxiv.org/abs/2501.09155