Computer Science ›› 2016, Vol. 43 ›› Issue (11): 317-321.doi: 10.11896/j.issn.1002-137X.2016.11.062

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Fractal Dimension Based Wavelet Packet EBCOT Core Image Compression

TANG Guo-wei, ZHANG Yan, LI Jing-hui and MU Lin-huan   

  • Online:2018-12-01 Published:2018-12-01

Abstract: As an important information source of petroleum geological analysis and geological prospecting,the core ima-ge has the charaters of huge data amount, rich texture information and weak contrast.A fractal dimension based wavelet packet EBCOT core image compression method was proposed.The original core image is decomposed completely in way of wavelet packet.The fractal dimension is taken as the cost function and its value for each sub-band node is calculated by using the difference box-counting method.By comparing the fractal dimension value of the parent node and its child nodes to achieve pruning,and the optimal wavelet packet decomposition can be obtained.At last,the EBCOT algorithm is applied to implement the core image compression.The experimental results show that the PSNR and SSIM of the reconstructed images are both higher than those of the entropy based wavelet packet compression algorithm and those of JPEG2000 algorithm.

Key words: Core image,Wavelet packet,Image coding,Fractal dimension

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