|Lossless Compression||Lossy Compression|
|1.It is a reversible process||1.It is a irreversible process|
|2.In Lossless compression techniques reconstructed image contains NO loss of information as exact reconstruction of the original image is possible||2.In Lossy compression techniques reconstructed image contains loss of information which in turn produces distortion in the image|
|3.Mean Square Error(MSE) is always zero as exact reconstruction of original image is possible||3.Mean Square Error(MSE) is not zero as exact reconstruction of original image is never possible|
|4.Compression ratio is Low||4.Compression ratio can be very high|
|5. Lossless Compression Techniques are Huffman Coding. Arithmetic Coding, DPCM, B2 Coding, CAC Coding, RLE Coding.||5.Lossy Compression Techniques are IGS Coding , JPEG Coding, DM Coding etc.|
|6.It is suitable for Text file compression, medical reports compression.||6.It is suitable for Photograph Natural scene, satellite image compression.|
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