Title :
Block wavelet transforms of image reconstruction using compressed sampling
Author :
Zhang, Liang ; Wu, Xian-Liang
Author_Institution :
Key Lab. of Intell. Comput. & Signal Process., Anhui Univ., Hefei, China
Abstract :
This paper describes the compressed sampling using the block wavelet transform which has more flexibility in reconstruction the images. Compressed sampling is considered for signals and images that are sparse in a wavelet basis. We propose a process of the image by sampling the data far below Nyquist rate in terms of compressed sampling, which shows that image data can be reconstructed from an extremely small set of measurements than what is generally considered necessary. A novel wavelet based interframe compression scheme has been developed and put into practice. It is based on a unique block wavelet transform that we have developed. BWT based interframe compression is very efficient in both compression and speed performance. The compression performance of our image codec hold a slightly lower PSNR value produces a more visually pleasing result. This implementation also preserves the scalability of the wavelet embedded coding technique.
Keywords :
block codes; data compression; image coding; image reconstruction; signal sampling; wavelet transforms; Nyquist rate; block wavelet transforms; compressed sampling; image reconstruction; wavelet embedded coding; Complexity theory; Filter bank; Image coding; Image reconstruction; Image resolution; Wavelet transforms; Compressed Sampling; block wavelet transform; matching pursuit; reconstruction;
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
DOI :
10.1109/CISP.2010.5648021