Reading and Writing Images
The Read( ) and Write( ) methods allow you to get images
into or out of an image object. Internally, images are stored in a
flexible abstract data structure that may be written to any of the
many different supported file formats (see Appendix C for a complete list
of file formats and prefixes). The default write format is in the MIFF
format (Magick Image File Format), which was created specifically for
storing ImageMagick image data. If you are interested in the full
specifications for the MIFF format, they are available on the CD-ROM
that comes with O’Reilly’s The Encyclopedia of Graphics File
Formats.
While writing, you can set any of the attributes described in
the section Retrieving and Setting File Information by
sending it as a parameter to Write(
). For example:
$image->Write(filename => 'xc:white', compress => 'Zip');
If you are using an X Server, you can display an image directly
from Perl. The Display( ) and
Animate( ) methods may be used to
send the image directly to the display or
animate programs described at the beginning of
this chapter.
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