I think the filesize issue has to do with IM's default jpg compression (-quality 80). Your input image may have been compressed to a lower quality. You can add -quality 50 or whatever value you want to your command line and get smaller sizes for the four images.
> >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 > _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
