I played around with Image::ExifTool and had a realization. When I printed all of the tags from a TIFF using Image::ExifTool, it didn't return any tags which explicitly contained the number of pages in the TIFF. It did, however, return tags from each of the pages past page 1 in a "$tag ($page-1)" format.

I wrote this ugly piece of code which does the job perfectly: 
use Image::ExifTool;

sub pageCount {
    my $FILE = shift;
    my $EXIFTOOL = new Image::ExifTool;
    my $INFO = $EXIFTOOL -> ImageInfo( $FILE );
    my $TAG;
    my $DONE = 0;
    my $PAGECOUNT = "1";

    while ( $DONE == 0 ) {
        $TAG = "ImageWidth ($PAGECOUNT)";
        my $VAL = $EXIFTOOL -> GetValue( $TAG );
        if ( !$VAL ) {
            $DONE = 1;
        }
        else {
            $PAGECOUNT++;
        }
    }
    return( $PAGECOUNT );
}

[download]
In essence, I keep looking for pages until GetValue returns undefined. It's far from a great solution, but it works.

Thanks for pointing me in the right direction!

In reply to Re^2: Multipage TIFFs by oligmd
in thread Multipage TIFFs by oligmd

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