[ date ] 2002/03/21 | Thursday | 07:26 PM
[ author ] [EMAIL PROTECTED] [EMAIL PROTECTED]
When I save a image with .pnm extension and later I open this image with od
top see bitmap, the first byte is P6. What that is mean? Is it GIMP version?
From the ppm man page:
Each PPM image consists of the following:
- A magic number for identifying the file type. A ppm
image's magic number is the two characters P6.
Similarly:
format magic number
--
PBM P4
PGM P5
PPM P6
pnm -+
+- pbm
+- pgm
+- ppm
PNM is like a general term for the PBM, PGM, and PPM formats.
^
|
+-- N is like a wildcard for B, G, or P.
--
package wuv'apqvjgt;($_=join('',(*PgtnHcemgt))) # print map beppu\@$_\n, qw(
=~ s/([HaP])(?!e)/ \U$1/g;s/^.|:| (?=A)|//g;y # cpan.org lbox.org binq.org
/c-z/a-u/;printJ$_\n;#$^%$^X@.^ !-- japh -- # oss.lineo.com codepoet.org);
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