• Telagarapu Prabhakar

Image compression is a widely addressed research area. Many compression standards are in place. But still here there is a scope for high compression with quality reconstruction. In order to reduce the volume of multimedia data over wireless channels, data compression techniques are widely used. Discrete Cosine Transform (DCT) is one of the major compressions Scheme. Dynamic bit-width adaptation scheme in Discrete Cosine Transform (DCT) is proposed as an efficient compression technique. Experimentation has been carried out to perform image compression based on DCT, Discrete Wavelet Transform (DWT) and Dynamic bit-width adaptation scheme in discrete cosine transform. The performance evaluation of the three methods is done based on PSNR which proves that Dynamic bit-width adaptation scheme in DCT is superior.

Dynamic bit-width adaptation scheme in DCT, Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT), Performance Evaluation of Image Compression Methods, PSNR

"Novel Image Compression using Modified DCT ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.1, Issue 4, page no.248-252, September-2014, Available :http://www.jetir.org/papers/JETIR1404009.pdf

"Novel Image Compression using Modified DCT ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.1, Issue 4, page no. pp248-252, September-2014, Available at : http://www.jetir.org/papers/JETIR1404009.pdf