Progressive image transmission has been widely applied for many applications,
such as teleconferencing, remote image database access and so on. In a progressive
image transmission system, an image is divided into several parts. In each transmission
phase, a sender transmits a part of the image to a receiver. The receiver uses the received
parts to reconstruct the original image for quickly seeing the outline of the whole image.
This paper proposes a progressive image transmission scheme based on discrete wavelet
transformation. In the proposed scheme, a digital image is transformed from spatial domain
into frequency domain using Haar wavelet transformation. In other words, the
spatial pixels in the image are decomposed into the frequency coefficients. The significant
coefficients are transmitted to the receiver for image reconstruction. The scheme also
transmits some selected coefficients along with the significant coefficients to the receiver
for improving the image quality of the reconstructed image. As the experimental results
indicated, the proposed scheme indeed outperforms other schemes in terms of image quality
of the reconstructed image in early transmission phases.
Relation:
International Journal of Innovative Computing, Information and Control 3(6):1449-1461
