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Group testing for image compression using alternative transforms
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DOI：10.1016/S0923-5965(03)00050-X.png)
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This paper extends the group testing for wavelets (IEEE Trans. Image Process. 11 (2002) 901) algorithm to code coefficients from the wavelet packet transform, the discrete cosine transform, and various lapped transforms. Group testing offers a noticeable improvement over zerotree coding techniques on these transforms; is inherently flexible; and can be adapted to different transforms with relative ease. The new algorithms are competitive with many recent state-of-the-art image coders that use the same transforms. (C) 2003 Elsevier Science B.V. All rights reserved.
Keyword:
group testing
image compression
wavelet packets
block transform coding
lapped transforms
embedded coding
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