An Evaluation of Transmitting Compressed Images in a Wide Area Network
Melliyal Annamalai, Bharat Bhargava · Purdue e-Pubs (Purdue University System) · 1995
Retrieving large data objects (of the order of hundreds of thousands of kilobytes) in a wide area network such as the Tntcrnet.takes several seconds and occasionally minutes.As a step towards reducing response time we have studied the possibility of redllciJlg the size of the data object by "losing" some of the data and then retrieving it.'Ve have focllssed on transmission of images across a wide area network.Images are amenable to losing data wil.houtlosing the semantics of the image.Lossy compression techniques result in a smaller size, lower quality image.'Ve have studied how the quality of the image can be sacrificed to achieve higher speed in retrieval over a wide area network.Vlfe have identified parameters involved in the retrieval process ami conducted experiments to see how they can be varied to speed Ill' retrieval.We have developed a scheme to rp.dl](~e response time at the expense of the (IUality of the object depending on the current values of the parameters.