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Image Compression using DCT based Compressive Sensing and Vector Quantization

International Journal of Computer Applications
© 2012 by IJCA Journal
Volume 50 - Number 20
Year of Publication: 2012
Dipti Bhatnagar
Sumit Budhiraja

Dipti Bhatnagar and Sumit Budhiraja. Article: Image Compression using DCT based Compressive Sensing and Vector Quantization. International Journal of Computer Applications 50(20):34-38, July 2012. Full text available. BibTeX

	author = {Dipti Bhatnagar and Sumit Budhiraja},
	title = {Article: Image Compression using DCT based Compressive Sensing and Vector Quantization},
	journal = {International Journal of Computer Applications},
	year = {2012},
	volume = {50},
	number = {20},
	pages = {34-38},
	month = {July},
	note = {Full text available}


Compressive sensing (CS) provides a mathematical framework for utilizing the potentiality of sparse nature of the commonly used signals and has been the subject of scientific research in recent years. CS involves the compression of the data at the first step of image acquisition. This paper presents an image compression algorithm based on DCT based CS and Vector Quantization (VQ). It has been observed from the implementation of the Proposed CS-VQ algorithm that the proposed algorithm gives better PSNR and visual quality when compared with the existing CS-VQ algorithm. The results obtained are even comparable with JPEG algorithm but only when small queue size is considered. The basic concept behind the CS states that small collections of non-adaptive linear projections of a sparse signal can efficiently helps in the reconstruction of the image through the image data sent to the decoder making use of some optimization procedure.


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