Efficient encryption of wavelet-based coded color images
Efficient encryption of wavelet-based coded color images
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DOI:
10.1016/j.patcog.2005.01.002
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发表时间:
2005-07
期刊:
影响因子:
--
通讯作者:
K. Martin;R. Lukac;K. Plataniotis
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文献类型:
--
作者:
K. Martin;R. Lukac;K. Plataniotis
An efficient, secure color image coder incorporating Color-SPIHT (C-SPIHT) compression and partial encryption is presented. Confidentiality of the image data is achieved by encrypting only the significance bits of individual wavelet coefficients for K iterations of the C-SPIHT algorithm. By varying K, the level of confidentiality vs. processing overhead can be controlled. For K=2, adequate security is achieved and an average of only 0.40% of bits needed encrypting for test images coded at 0.8bpp.