The example is a satellite image of hurricane Gilbert,
which is 512-pixel wide and 512-pixel tall with 256 shades of gray. The raw image information takes 262,144 bytes.
This is the original image in GIF format
Note GIF provides some lossless compression, therefore the size of the image file is 179,870 bytes
The following image has been compressed using a SOWLP method. The compression is lossy, so you will see some degradation. But the image data file is only 14,032-byte long!
The image is decompressed as you retrieve it
Note that only less than 14K is sent from a server to your local station. The decompression is done locally on your computer. You may want to compare the time it took to retrieve the gif and slpg images
Now you can compress and decompress the image as you wish.
[It is no longer available]