comprsn-ratio.m

How to find compression ratio of image file

K=imfinfo ('skull-50.jpg');
L=imfinfo ('skull-50.jpg');
M=imfinfo ('skull-50.jpg');

image_bytes=K.Width*K.Height*K.BitDepth/8
compressed_bytes_K=K.FileSize

image_bytes=L.Width*L.Height*L.BitDepth/8
compressed_bytes_L=L.FileSize

image_bytes=M.Width*M.Height*M.BitDepth/8
compressed_bytes_M=M.FileSize

compression_ratio=image_bytes/compressed_bytes