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Multiple Description Image Coding Using Contourlet Transform

机译:多个描述使用contourlet变换编码图像编码

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In our work we present multiple description coding (MDC) scheme using contourlet transform (CT) for gray scale image. The principle is to prove performance of our algorithm in the coding field in contrast of wavelet that is widely used for image coding. The goal of our approach is to encode directional subbands resulting from the directional stage decomposition, to form the descriptions compressed and transmitted over different channels. The main objective of this work is to encode the source into four descriptions for transmission over packet loss channels, Most of multiple description scenarios are implemented in transform domain. A controlled amount of correlation is appended to the formed descriptions using a pairwise correlating transform (PCT). The experimental results of CT compared to discret wavelet transform (DWT) show that our method achieves better performance in term of delivered peak signal to noise ratio (PSNR) and visual image quality reconstruction.
机译:在我们的工作中,我们使用Contourlet变换(CT)呈现多个描述编码(MDC)方案进行灰度尺度图像。该原理是在广泛用于图像编码的小波对比中证明我们在编码场中的算法的性能。我们的方法的目标是编码由方向阶段分解产生的方向子带,以形成压缩和通过不同信道传输的描述。这项工作的主要目的是将源编码为四个描述,以便通过数据包丢失通道传输,大多数多个描述方案在变换域中实现。使用成对相关变换(PCT)将受控的相关量附加到所形成的描述。 CT的实验结果与离散小波变换相比(DWT)表明,我们的方法在传送的峰值信号(PSNR)和视觉图像质量重建方面实现了更好的性能。

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