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arXiv 2205.11202cs.CVeess.IV
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基于去噪的非整数像素图像重建

Denoising-based image reconstruction from pixels located at non-integer positions

Signal Processing Friedrich-Alexander University Erlangen-N\" u rnberg (FAU), Germany

Ján Koloda, Jürgen Seiler, André Kaup

摘要:

数字图像通常表示为规则的2D阵列,因此像素以整数寻址的矩阵形式组织。然而,存在许多图像处理操作,诸如旋转或运动补偿,其在非整数位置处产生像素。通常,图像重建技术不能处理非整数位置处的样本。在本文中,我们建议使用基于三角测量的重建作为初始估计,然后通过一种新的自适应去噪框架进行改进。仿真结果表明,改善高达1.8 dB以上(在PSNR方面)实现相对于初始估计。

英文摘要:

Digital images are commonly represented as regular 2D arrays, so pixels are organized in form of a matrix addressed by integers. However, there are many image processing operations, such as rotation or motion compensation, that produce pixels at non-integer positions. Typically, image reconstruction techniques cannot handle samples at non-integer positions. In this paper, we propose to use triangulation-based reconstruction as initial estimate that is later refined by a novel adaptive denoising framework. Simulations reveal that improvements of up to more than 1.8 dB (in terms of PSNR) are achieved with respect to the initial estimate.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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