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Improved directional weighted interpolation method for single-sensor camera imaging

机译：单传感器相机成像的改进方向加权插值方法

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摘要

We present an improved directional weighted interpolation method for single-sensor camera imaging. By observing the fact that the conventional directional weighted interpolation methods are based on unreliable assumptions using spectral correlation, a contribution of this work is made using an antialiasing finite impulse response filter to improve the interpolation accuracy by exploiting robust spectral correlation. We also make a contribution toward refining the interpolation result by using the gradient inverse weighted filtering method. An experimental analysis of images revealed that our proposed algorithm provided superior performance in terms of both objective and subjective image quality compared to conventional directional weighted demosaicking algorithms. Our implementation has very low complexity and is, therefore, well suited for real-time applications.
机译：我们提出了一种针对单传感器摄像机成像的改进的方向加权插值方法。通过观察传统定向加权插值方法基于使用频谱相关性的不可靠假设这一事实，使用抗混叠有限脉冲响应滤波器通过利用鲁棒的频谱相关性来提高插值精度，从而为这项工作做出了贡献。我们还通过使用梯度逆加权滤波方法为改进插值结果做出了贡献。图像的实验分析表明，与传统的定向加权去马赛克算法相比，我们提出的算法在客观和主观图像质量方面均提供了出色的性能。我们的实现具有非常低的复杂度，因此非常适合实时应用。

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  • 来源
    《Optical engineering》 |2014年第9期|093103.1-093103.12|共12页
  • 作者

    Liwen He; Xiangdong Chen; Gwanggil Jeon; Jechang Jeong;

  • 作者单位

    Nanjing University of Posts and Telecommunications, School of Computer Science, Nanjing, Jiangsu 210003, China;

    Nanjing University of Posts and Telecommunications, School of Computer Science, Nanjing, Jiangsu 210003, China;

    Incheon National University, Department of Embedded Systems Engineering, 119 Academy-ro, Yeonsu-gu, Incheon 406-772, Republic of Korea;

    Hanyang University, Department of Electronics and Computer Engineering, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    color filter array interpolation; demosaicking; directional weighted interpolation; gradient inverse weighted filter;

    机译：彩色滤光片阵列插值;脱俗定向加权插值;梯度逆加权滤波器;

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