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Three-dimensional medical image compression based on low-complexity RKLT

Three-dimensional medical image compression based on low-complexity RKLT

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A low-complexity reversible integer Karhunen-Loève transform (low-RKLT) is proposed for three-dimensional (3D) medical image compression. Low-RKLT is used for exploiting the correlation existing among neighbouring slices followed by integer wavelet transform in the spatial domain. Simulation results show that low-RKLT provides comparable lossless compression performance and obviously better lossy compression performance compared with integer wavelet transform.

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