Image Transmission Using Combined Forwared Error Control and Zero Tree Wavelet Domains Encoding Over Varying Channel

Author:   Mohamed Ibrahim Shujaa & Louay F. Hasan

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Abstract 

Transmission of images is still unsolved problem for many types of channels although it’s fundamentally important in many applications. The first method of transmitting wavelet based on zero tree encoded images over noisy channels is to add channel coding without alerting the sources coder. The second method is to reorder the embedded zero tree bit stream into packets each one containing a small set of wavelet coefficient trees. The hybrid is a mixture of these two methods and it demonstrates the situation in which the hybrid image coder can outperform either of the two building block methods. A coded image is passed through channel that can suffer packet losses as well as statistically varying bit errors. The set partitioning in hierarchical tree (SPIHT) image coding algorithm is an improved version of the embedded zero tree wavelet (EZW) algorithms. The images are transmitted over memory less channels (e.g. binary symmetric cannels BSC) with known statistic and fading channels.     

Keywords: image, transmission, hybrid, coding, algorithm, hybrid coder, SPHIT+RCPC/CRC, fading, channel.