My last change of code:

#!/usr/bin/perl -w
use 5.010;
use strict;
use warnings;
use Cwd qw();
use PDF::GetImages 'pdfimages';

my $path = Cwd::cwd(); 
my $abs = $path.'/file.pdf'; # filepath to pdf file
my $opt = $path.'/processing/'; # new dir for output
my $images = pdfimages($abs, $opt) or die($PDF::GetImages::errstr);
scalar @$images or die("no images in $path");
for (@$images){print "$_\n";}
[download]

Output in commandline is:
"cant resolve /home/auu/Documents/Imag/processing/, should be able to, please notify PDF::GetImages AUTHOR at extractor.pl line 11"

Did you try setting $abs and $opt as absolute paths?

Also, as for your other question, unless I am mistaken, it creates an array of the images created in $opt ($path). therefore, if empty returns false and dies with the error message "no images in $path".
J -

It is working! The mistake was that I didn't create the folder, I thought that Perl will create if there is no folder... Now, I created manually the folder and all is working... now, I'll write the code that will create the folder...
Enough codes make shapes. (Hamidjon)

I made such but there is no result:

my $abs = '/home/auu/Documents/Imag/file.pdf';
my $opt = '/home/auu/Documents/Imag/newfolder/';
[download]

Enough codes make shapes. (Hamidjon)