Data Compression : Why ?

Let's take an image ..."The size of this included image is 84 kB"

But 600 x 400 x 32 bits (2^32 colours = 16 Millions colours) = 7680000 bits = 1 MB !!! (937.5 kB)

No more 12 s but 2 minutes on a 56kbps modem !

84 kB is the compressed image

Compare your lab directory size and the zipped equivalent ... another type of compression

Different type of compression uses different codec : compressor / decompressor software routines

Same Image