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PERFORMANCE EVALUATION OF ADAPTIVE MESH BASED 3D MRI COMPRESSION USING WAVELET CODING SCHEMES

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Author(s): S.Bhavani, | Dr.K.Thanushkodi

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 2;
Issue: 6;
Start page: 2354;
Date: 2010;
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Keywords: Content-based mesh | Image compression | Wavelet coding | JPEG coding | Simulation.

ABSTRACT
The MR images play a major role in the diagnosis of vital organs of the human body. Huge amount of medical image data is generated on a daily basis. This data needs to be stored for future study and follow up. This requires a large amount of storage space which is especially true for three - dimensional (3D) medical data formed by image sequences. This has resulted in image compression being an important issue in reducing the cost of data storage and transmission time. In this paper we evaluate the performance of wavelet based coding lgorithm 3D SPIHT using MATLAB. For this purpose 8 MRI head scan data test sets of size 128×128×8 voxels are used and we have evaluated PSNR as the error metric for spatial levels 3 and 5 after forming adaptive mesh and the simulation results show the comparison of performance of PSNR values for various bits per pixels.
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