A new signal processing method for video: reproduce the frequency spectrum exceeding the Nyquist frequency
A new signal processing method for video: reproduce the frequency spectrum exceeding the Nyquist frequency
复制标题
视频信号处理新方法：再现超过奈奎斯特频率的频谱
DOI：
10.1145/2155555.2155563
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
S. Gohshi
中科院分区：
文献类型：
--
作者：
S. Gohshi
提出了一种新的提高视频图像质量的信号处理方法。提高视频图像分辨率已经研究了很多年。边缘增强的方法通常被称为锐化电路（SC），增强器或Unsharp Mask。它被广泛使用，因为它在真实的时间内工作，并且具有成本效益。然而，边缘增强实际上并没有提高分辨率的程度，而是增加了感知的分辨率。使用传统的线性信号处理方法几乎不可能产生超过奈奎斯特频率的分量。超分辨率（SR）是一个非常有趣的研究领域，已经提出了许多想法和方法，其中一些具有实际提高分辨率的潜力。然而，这些想法尚未在频域中得到广泛讨论。提出了一种新的信号处理方法，产生超过奈奎斯特频率的分量。关于时域以及频域的仿真结果进行了讨论。
A new signal processing method to improve video image quality is proposed in this paper. Improving video image resolution has been researched for many years. The method of edge enhancing is usually known as Sharpness Circuit (SC), Enhancer or Unsharp Mask,. It is widely used since it works in real time and it is cost efficient. However, edge enhancing does not actually improve the degree of resolution but increases perceived resolution. It is almost impossible to create components exceeding the Nyquist frequency using conventional linear signal processing methods. Super Resolution (SR) is a highly interesting research field and many ideas and methods have been proposed, some of which have the potential to actually enhance the resolution. However, these ideas have not been widely discussed in the frequency domain. A new signal processing method that creates components exceeding the Nyquist frequency is proposed. The simulation results are discussed with regard to time domain as well as to the frequency domain.