[ 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>$1/g;s/^.|:| (?=A)|>//g;y # cpan.org lbox.org binq.org
/c-z/a-u/;print"J$_\n";#$^%$^X@.^ <!-- japh --> # oss.lineo.com codepoet.org);
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