VHDL design of lossy DWT based image compression technique for video conferencing
X. Anitha Mary · 2013
In certain applications like Video Conferencing and Television, large amount of images are transmitted through internet. It necessitates an image compression technique to utilize the bandwidth. In this work a scheme of Compression technique is proposed based on the combination of 2-D DWT/Huffman Encoding. An aim of the work is to compress an image using Discrete Wavelet Transform and Huffman encoding, to implement DWT using VHDL, to implement Huffman encoding using VHDL and to measure the performance in terms of compression ratio for five different images. The first part of the work presents an implementation of Discrete wavelet Transform with Haar wavelet and second part of the work presents an implementation of Huffman encoding. The performance will be measured in terms of Compression ratio.