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ANALYSIS OF IMAGE COMPRESSION USING DCT AND DWT TRANSFORMS
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Author(s):
NEETU RANI
Vol - 8, Issue- 6 ,
Page(s) : 271 - 278
(2017 )
DOI : https://doi.org/10.32804/IRJMST
Abstract
Compression refers to reducing the quantity of data used to represent a file, image or video content without excessively reducing the quality of the original data. Image compression is the application of data compression on digital images. The main purpose of image compression is to reduce the redundancy and irrelevancy present in the image, so that it can be stored and transferred efficiently. The compressed image is represented by less number of bits compared to original. Hence, the required storage size will be reduced, consequently maximum images can be stored and it can transferred in faster way to save the time, transmission bandwidth. Depending on the reconstructed image, to be exactly same as the original or some unidentified loss may be incurred, two techniques for compression exist. Two techniques are: lossy techniques and lossless techniques. This paper presents DWT and DCT implementation using DCT and DWT Wavelet transform by selecting proper method, better result for PSNR have been obtained.
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