Quality assessment method for image text recognition in content security review

Zhang Yulong; Liang Tianyi; Zhang Ru; Liu Gongshen

doi:10.11959/j.issn.2096-109x.AQ25222

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Quality assessment method for image text recognition in content security review

Papers | 更新时间：2026-05-11

- Quality assessment method for image text recognition in content security review
- Chinese Journal of Network and Information Security Vol. 12, Issue 2, Pages: 55-64(2026)
- 作者机构：
  
  1.北京邮电大学网络空间安全学院，北京 100876
  2.上海交通大学计算机学院（网络空间安全学院），上海 200240
  3.华东师范大学计算机科学与技术学院，上海 200062
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-109x.AQ25222
  CLC： TP393
- Received：24 August 2025，
  
  Revised：2026-04-14，
  
  Accepted：15 April 2026，
  
  Published：25 April 2026
- 稿件说明：
移动端阅览
张玉龙, 梁天一, 张茹, 等. 适用于内容安全审核的图像文本识别质量评估方法[J]. 网络与信息安全学报, 2026, 12(2): 55-64.

Zhang Yulong, Liang Tianyi, Zhang Ru, et al. Quality assessment method for image text recognition in content security review[J]. Chinese Journal of Network and Information Security, 2026, 12(2): 55-64.
张玉龙, 梁天一, 张茹, 等. 适用于内容安全审核的图像文本识别质量评估方法[J]. 网络与信息安全学报, 2026, 12(2): 55-64. DOI： 10.11959/j.issn.2096-109x.AQ25222.

Zhang Yulong, Liang Tianyi, Zhang Ru, et al. Quality assessment method for image text recognition in content security review[J]. Chinese Journal of Network and Information Security, 2026, 12(2): 55-64. DOI： 10.11959/j.issn.2096-109x.AQ25222.

摘要

针对内容安全审核场景下图像文本识别质量评估的难题，提出基于一致性置信（CC）机制的质量评估方法。现有评估方法存在显著不足，传统方法依赖人工标注且成本高昂，视觉语言模型作为评判器（VLM-as-Judge）方法存在逻辑悖论和偏见，不确定性量化方法需要访问模型内部参数。基于CC机制的质量评估方法通过多模型一致性分析实现无监督质量评估，利用编辑距离量化一致性程度，并设计动态权重和阈值门控机制识别低质量输出。该方法具有黑盒评估、完全无监督、模型无关性三大核心优势。实验结果表明：在两个数据集上质量验证F1得分达49.9%~51.61%，相比基线方法提升42.76%；在对抗性文本、复杂场景等挑战性场景下均表现最佳；模型集成使低成本开源模型超越高成本闭源模型，性能提升达32分。

Abstract

A quality assessment method based on the consistency confidence (CC) mechanism was proposed to address the challenge of image text recognition quality assessment in content security auditing scenarios. Significant deficiencies were identified in existing evaluation methods. Traditional methods were found to rely on manual annotation and be cost-prohibitive. The visual language model as judge (VLM-as-Judge) approach was observed to suffer from logical paradoxes and biases. Uncertainty quantification methods were shown to require access to internal model parameters. With the proposed CC-based method

unsupervised quality assessment was achieved through multi-model consistency analysis. Edit distance was utilized to quantify the degree of consistency

and dynamic weighting with threshold gating mechanisms was designed to identify low-quality outputs. This method possesses three major advantages: black-box evaluation

complete unsupervisedness

and model-agnostic property. Experimental results demonstrated that the quality verification F1 score reached 49.9%~51.61%

which represented a 42.76% improvement over baseline methods. The best performance was exhibited in challenging scenarios such as adversarial text and complex scenes. Through model ensemble

low-cost open-source models were enabled to surpass high-cost closed-source models

with a performance improvement of 32 points.

关键词

Keywords

references

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