Wavelet based lossless High Speed Compression of Compound Image
Dr.P.S.Jagadeesh Kumar · Figshare · 2015
Compression of compound image is essential for remote control software, such as real virtual network computing (VNC), which allows a person at a remote computer to view and interact with another computer across the network, as if sitting in front of the computer. A smart display device acts as a portable screen with 802.11b wireless connection to a nearby desktop PC, enabling people to surf the web or browse pictures that are stored on the desktop PC. The challenge is that the huge amount of real-time computer screen video data should be transmitted over the cable or wireless networks. One 800×600 frame of true colour screen image has a size of 1.44 MB and 85 frames/sec produces more than 100 MB data. In this paper, wavelet sub-band coding based lossless compression of compound image is discussed and the implementation shows excellent visual quality of text in compressed computer screen images.