A Review of Image Compression

Image compression plays important role in the image processing. Image compression is the process of reducing the size of the image. The image stored in raw form needs large amount of space for storage that is considered as the biggest problem during the transmission of the image. So in this way the storage capacity and the transmission capacity of the image degrade. The data compression techniques can be used for the image compression but the quality of the image is decreased. To improve qualityof image various image compression techniques have been introduced. Image compression can be lossy image compression or loseless image compression. In lossy the reconstructed image is not exactly same as the original image. In case of lossless image compression the reconstructed image after applying the compression is same as original image. Lossy and lossless compression techniques are further of various types. In this paper various lossy and loseless techniques are discussed. On the basis of the survey conducted the efficient and the effective technique of image compression is obtained. This will results in the best compression method for the image compression in which the quality of the image is not degraded and the information that is present in the image is not lost.