[magick-users] Crop a large image into multiple smaller ones

[Sundar Gopal]

I was trying to crop an image into multiple images so as to load them in a
parallel fashion,
(so that the user can start seeing the fragments quicker, when the bandwidth
available is low etc, over the internet), as per the topic
"Tile Cropping, sub-dividing one image into multiple images"
in HYPERLINK
"http://www.imagemagick.org/Usage/crop/#crop"http://www.imagemagick.org/Usag
e/crop/#crop.

I used the command :
convert -crop 120x120 big_file small_file.jpeg

The original file size is 28K, it got cropped into 4 files each of size
around 14K, with the result that the total size becomes much more than the
original.
Is there a way to crop an image into smaller chunks which will be
proportionately smaller in size too, as otherwise it defeats my purpose ?
(assuming loss of quality can be tolerated ?)

Thanks in advance,
Sundar

 


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