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Transmission of images over general packet radio services using advanced wavelet image codecs and digital signal processor chipsPlaninšič, Peter ; Gleich, Dušan ; Mohorko, JožeWe develop a wavelet-based Godec using a low-cost and low-energy-consuming 16-bit fixed-point digital signal processor (OSP). The target application is designed to grab an image from a camera, Gode ... the image using a wavelet-based Godec, 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 OSP 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 conce ming 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 co-dec is comparable with a JPEG2000 Godec 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 net-work using Internet protocol/user datagram protocol/trivial file transfer protocol (IP/UDP/TFTP).Source: Journal of electronic imaging. - ISSN 1017-9909 (Letn. 15, št. 4, 2006, [10] str.)Type of material - article, component partPublish date - 2006Language - englishCOBISS.SI-ID - 11058454
Author
Planinšič, Peter |
Gleich, Dušan |
Mohorko, Jože
Topics
wavelet image |
digital signal processors |
coding algorithms
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Planinšič, Peter | 04799 |
Gleich, Dušan | 20862 |
Mohorko, Jože | 11576 |
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