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Multilevel magnetic resonance imaging compression using compressive sensing

机译:使用压缩感测的多级磁共振成像压缩

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摘要

In this study, a multilevel compressive sensing (CS) compression for magnetic resonance imaging (MRI) images is presented. The proposed algorithm divides the image into frames of equal size, transforms the pixels inside the frame into the sparse domain, and then applies the CS compression to each frame with different level of compression. Four levels of compression are suggested, based on how sparse is the information inside the frame. The proposed algorithm is evaluated using six real MRI images showing different parts of the human body. The experimental results show a significant improvement of 7.03 dB in peak-signal-to-noise ratio and 23.76% in compression level (CL) when compared with a uniform CL algorithm.
机译:在这项研究中,提出了用于磁共振成像(MRI)图像的多级压缩感测(CS)压缩。所提出的算法将图像分成大小相等的帧,将帧内的像素转换为稀疏域,然后将CS压缩应用于具有不同压缩级别的每个帧。根据帧内信息的稀疏程度,建议了四个压缩级别。使用六个显示人体不同部位的真实MRI图像对提出的算法进行了评估。实验结果表明,与统一的CL算法相比,峰值信噪比显着提高了7.03 dB,压缩级别(CL)显着提高了23.76%。

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