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探索CMOS中非线性过器的有效性,用于用于图像质量提升的2D信号处理
Hector Bandala-Hernandez1, Alejandro Bautista-Castillo1, José Miguel Rocha-Pérez1,2
1National Institute for Astrophysics, Optics and Electrónics, Luis Enrique Erro #1, Sta María Tonanzintla, Puebla 72840, Mexico.
Sensors (Basel, Switzerland)
|July 13, 2024
概括
在CMOS中非线性过器显著改善2D信号处理以提高图像质量. 它们在降低噪音和保护图像细节方面优于线性过器,提供高效的实时应用.
科学领域:
- 电气工程 电气工程
- 计算机视觉 计算机视觉
- 信号处理 信号处理
背景情况:
- 传统的线性过器在2D信号处理中与非线性数据和冲动噪声作斗争.
- CMOS图像传感器需要先进的过技术,以获得最佳的图像质量.
研究的目的:
- 调查CMOS中非线性过器在二维信号处理中的有效性.
- 为了比较非线性过器,特别是中位数-中位数 (Med-Med) 过器,与传统的线性过器.
- 为了应对硬件实施的挑战,包括功耗和芯片面积.
主要方法:
- 对线性和非线性过器进行比较分析,使用标准化平方误差 (NSE),峰值信号噪声比 (PSNR) 和结构相似性指数 (SSIM) 等指标.
- 在受控条件下对过器性能进行模拟和实验验证.
- 使用9像素图像传感器阵列开发和测试Med-Med过器的新型硬件架构.
主要成果:
- 与CMOS中的线性过器相比,非线性过器,特别是Med-Med方法,在消除冲动噪声和提高图像质量方面表现出卓越的性能.
- 拟议的Med-Med过器架构显示了功能验证和硬件实现的潜力.
- 针对功耗和芯片面积的优化硬件实施策略得到了解决.
结论:
- 在CMOS中非线性过器为2D信号处理中的实时图像质量提升提供了显著的进步.
- 这些发现支持这些过器在各种现实世界成像系统中的更广泛应用.
- 这项研究将理论概念与实际硬件实现联系起来,推进视觉技术.
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