1 October 2006 Transmission of images over general packet radio services using advanced wavelet image codecs and digital signal processor chips
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J. of Electronic Imaging, 15(4), 041205 (2006). doi:10.1117/1.2372780
Abstract
We develop a wavelet-based codec using a low-cost and low-energy-consuming 16-bit fixed-point digital signal processor (DSP). The target application is designed to grab an image from a camera, code the image using a wavelet-based codec, and send a coded file over a wireless global system for mobile communications/general packet radio services (GSM/GPRS) network. Since the channel capacity of the GSM/GPRS network is limited, a DSP with a relatively low computational power is sufficient to implement an image codec. A trade-off is made between the complexity and the efficiency of the wavelet-based image coder. Any implementation issues concerning the wavelet transform and entropy coding are discussed. Lifting schemes for a 9-7 and a 5-3 filter bank are used. The novel ordering of bit-plane bits is presented. The proposed codec is comparable with a JPEG2000 codec in the rate-distortion sense. The experimental results show that the implementation of JPEG 2000 on the presented platform runs 60% slower than the proposed codec. The coded file is transmitted over a wireless network using Internet protocol/user datagram protocol/trivial file transfer protocol (IP/UDP/TFTP).
Peter Planinšic, Dušan Gleich, Jože Mohorko, "Transmission of images over general packet radio services using advanced wavelet image codecs and digital signal processor chips," Journal of Electronic Imaging 15(4), 041205 (1 October 2006). http://dx.doi.org/10.1117/1.2372780
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KEYWORDS
Digital signal processing

Wavelets

General packet radio service

Signal processing

Image compression

Wavelet transforms

Image processing

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