Data Compression for Video-Conferencing using Half tone and Wavelet Transform

Overhead of data transmission over internet is increasing exponentially every day. Optimization of natural bandwidth is the basic motive by compressing image data to the maximum extend. For the same objective, combination of lossy half tone and lossless Wavelet Transform techniques is proposed so as to obtain low-bit rate video data transmission. Decimal values of bitmapped image are to be converted into either 1 or 0 in half toning process that incur pictorial loss and gives 8:1 compression ratio (CR) irrespective of image. Wavelet Transform is applied on half tone image for higher compression for various levels. An experimental result shows the higher CR, minimum Mean Square Error (MSE). Ten sample images of different people captured by Nikon camera are used for experimentation. All images are bitmap (.BMP) 512 X 512 in size. The proposed technique can be used for video conferencing, storage of movies and CCTV footage etc.

@article{Kekre2012,
  title     = {Data Compression for Video-Conferencing 
using Half tone and Wavelet Transform},
  journal   = {International Journal of Advanced Computer Science and Applications},
  volume    = {3},
  number    = {12},
  year      = {2012},
  publisher = {The Science and Information Organization},
  author    = {Dr H.B Kekre and Sanjay R. Sange and Dr. Tanuja K. Sarode},
  doi       = {10.14569/IJACSA.2012.031219},
  url       = {https://doi.org/10.14569/IJACSA.2012.031219}
}