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New video encoder based on Wavelet Coefficients and motion compensation

机译:基于小波系数和运动补偿的新型视频编码器

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Discrete Wavelet Transform (DWT) is a powerful mathematical tool which has stimulated many developments in several scientific and technical fields, particularly in signal and image Processing; analysis and compression. Its multi-resolution properties are a major advantage for their use in the JPEG.2000 standard. In video coding, motion management is an important task. Indeed, on one hand, the DWT does not preserve the translation invariance because of the underlying dyadic down-sampling process. That justifies the absence of a DWT-based video compression standard until now. On the other hand, video coding standards using Discrete Cosine Transform (DCT) produces often undesirable artifacts. Our contribution aims to exploit the DWT multi-resolution properties using a motion estimation technique to avoid the problem of DWT translation-invariance which leads to false motion vectors. In This paper we present a new color video compression using DWT and a motion compensation technology, that we called SSC-MC. An assessment of the proposed scheme was operated on a set of standard video sequences; the results are compared with the well known standards. It is shown that our results are promising.
机译:离散小波变换(DWT)是一种功能强大的数学工具,它刺激了多个科学和技术领域的许多发展,尤其是在信号和图像处理方面。分析和压缩。它的多分辨率属性是将它们用于JPEG.2000标准的主要优势。在视频编码中,运动管理是一项重要的任务。确实,一方面,由于潜在的二进位下采样过程,DWT并未保留翻译不变性。这证明到目前为止还没有基于DWT的视频压缩标准。另一方面,使用离散余弦变换(DCT)的视频编码标准通常会产生不希望的伪像。我们的贡献旨在使用运动估计技术来开发DWT多分辨率属性,从而避免DWT平移不变性导致虚假运动矢量的问题。在本文中,我们介绍了一种使用DWT和运动补偿技术(称为SSC-MC)的新型彩色视频压缩技术。对建议方案的评估是在一组标准视频序列上进行的;将结果与众所周知的标准进行比较。结果表明,我们的结果是有希望的。

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