6533b852fe1ef96bd12aae70
RESEARCH PRODUCT
Low Complexity Image Compression using Pruned 8-point DCT Approximation in Wireless Visual Sensor Networks
Chaouki AraarMohammed BenmohammedEl-bey BourennaneSalim Ghanemisubject
Image qualityComputer scienceReal-time computingTransform02 engineering and technology[MATH] Mathematics [math]low-complexity algorithmspruned 8-point DCT0202 electrical engineering electronic engineering information engineeringDiscrete cosine transform[MATH]Mathematics [math]CosineTransform codingapproximate DCTenergy conservation020208 electrical & electronic engineeringEnergy consumptionpruning approach[SPI.TRON] Engineering Sciences [physics]/Electronicsimage compression[SPI.TRON]Engineering Sciences [physics]/ElectronicsUncompressed videoWVSNsDiscrete020201 artificial intelligence & image processingWireless sensor networkData compressionImage compressiondescription
International audience; Since the transmission of the uncompressed image in the context of wireless visual sensor networks (WVSNs) consumes less energy than transmitting the compressed image, developing energy-aware compression algorithms are mandatory to extend the camera node's lifetime and thereby the whole network lifetime. The present paper studies a low-complexity image compression algorithm in the context of WVSNs. This algorithm consists of applying a pruning approach on a DCT approximation transform. The scheme is investigated in terms of computation cycles, processing time, energy consumption and image quality. Experimental works are conducted using the Atmel Atmega128 processor of Mica2 and MicaZ sensor boards. Simulation results show that the studied scheme can exhibit a competitive performance when compared against other algorithms. Furthermore, the scheme can achieve the best tradeoff between energy consumption and image quality.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-12-04 |