全参考图像质量评估方法的适用性评估 计算机断层扫描图像的图像
Kohei Ohashi1,2, Yukihiro Nagatani3, Makoto Yoshigoe3
1Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan. kohashi@belle.shiga-med.ac.jp.
Journal of digital imaging
|August 7, 2023
概括
使用全参考IQA (FR-IQA) 方法的客观图像质量评估 (IQA) 适用于计算机断层扫描 (CT) 图像. 视觉信息真实性 (VIF) 与对CT图像质量的人体主观评估的相关性最强.
科学领域:
- 医疗成像医学成像
- 图像质量评估 图像质量评估
- 放射学 放射学是一门学科.
背景情况:
- 准确的图像质量评估 (IQA) 对于医学诊断和治疗至关重要.
- 开发用于自然图像的PSNR和SSIM等全参考IQA (FR-IQA) 方法可能不适合用于计算机断层扫描 (CT) 等医学成像模式.
- 评估现有的FR-IQA方法对CT图像的适用性是必要的,以确保可靠的图像质量评估.
研究的目的:
- 调查客观FR-IQA方法和对CT图像的主观人类评估之间的相关性.
- 确定为自然图像设计的标准FR-IQA方法是否可以可靠地用于CT图像质量评估.
- 与主观评估相比,确定最有效的FR-IQA方法来评估CT图像质量.
主要方法:
- 从六张原始图像中生成了210张扭曲的CT图像,使用噪声和模糊退化.
- 在扭曲的CT图像上评估了九种广泛使用的FR-IQA方法 (PSNR,SSIM,FSIM,IFC,VIF,NQM,VSNR,MSSSIM,IWSSIM).
- 使用双刺激连续质量量表 (DSCQS) 方法对六名观察员进行主观评估,并使用皮尔森线性相关系数 (PLCC),斯皮尔曼等级顺序相关系数 (SROCC) 和根-平均-平方误差 (RMSE) 量化性能.
主要成果:
- 所有九种测试的FR-IQA方法都与主观评估显示出强烈的相关性 (PLCC和SROCC>0.8),表明它们对CT图像的适用性.
- 视觉信息真实性 (VIF) 方法在所有三个指标 (PLCC,SROCC和RMSE) 中表现最好.
- 这些发现表明,VIF是CT图像质量的高度准确的客观测量,与主观的人类评估相美.
结论:
- 标准FR-IQA方法适用于评估CT图像的质量.
- 视觉信息真实性 (VIF) 成为CT图像中最准确的客观IQA指标,与主观的人类感知密切一致.
- 该研究验证了VIF的使用,作为CT成像质量控制和算法开发中的主观评估的可靠替代方案.
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