Spiht & Aswdr Techniques: a Comparative Study
نویسندگان
چکیده
The objective of this paper is to implement and evaluate the effectiveness of wavelet based Spatial-orientated Tree Wavelet (STW), 3D-Set Partitioning in hierarchical trees (3D-SPIHT) and Adaptively Scanned Wavelet Difference Reduction (ASWDR) compression techniques using MATLAB R2010b. The performance parameters such as Peak Signal to Noise Ratio (PSNR), Mean Squared Error (MSE), Compression Ratio (CR) and Bit-PerPixel (BPP) ratio are evaluated based on the algorithms. Comparisons amongst the techniques are carried out on the basis of calculated performance parameters. The mentioned techniques achieved better PSNR and MSE values with respect to the Compression Ratio which makes them more efficient than the 2D-Discrete Cosine Transform (DCT). Mentioned techniques are equally compatible for video formats like .MPEG, .DAT, .3GP, .AVI, .FLV, .MOV etc making it more versatile.
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