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#!/usr/bin/perl
use strict;
our $images_dir = "/home/lens/Desktop/woodtripod/";
our $thumbs_dir = "/home/lens/Desktop/thumbs/randomcrops5k/";
our $count = 5000;
mkdir($thumbs_dir);
mkdir($thumbs_dir . "A/");
mkdir($thumbs_dir . "B/");
mkdir($thumbs_dir . "A/train/");
mkdir($thumbs_dir . "B/train/");
mkdir($thumbs_dir . "A/val/");
mkdir($thumbs_dir . "B/val/");
mkdir($thumbs_dir . "A/test/");
mkdir($thumbs_dir . "B/test/");
our @files = ();
opendir DIR, $images_dir;
while (readdir DIR) {
next if /^\./;
push(@files, $_);
}
closedir DIR;
our @images = sort @files;
# assume all images are same size
our $w = 1920;
our $h = 1080;
our $dw = 256;
our $dh = 256;
my $i; my $x; my $y; my $dir;
for ($i = 0; $i < $count; $i++) {
my $id = int($i/$count * (scalar @images - 1));
if ( ($id % 7) == 3) {
$dir = "test/";
} elsif ( ($id % 7) == 6) {
$dir = "val/";
} else {
$dir = "train/";
}
if ( $i && ($i % 1000) == 0) {
print($id . "...\n")
}
my $x = int(rand($w - $dw));
my $y = int(rand($h - $dh));
my $a_frame = $images_dir . $images[$id];
my $b_frame = $images_dir . $images[$id+1];
my $crop = $dw . "x" . $dh . "+" . $x . "x" . $y;
my $fn = sprintf("frame_%04d.png", $i);
print "$fn $x $y $a_frame\n";
system("convert", $a_frame, "-crop", $crop, $thumbs_dir . "A/" . $dir . $fn);
system("convert", $b_frame, "-crop", $crop, $thumbs_dir . "B/" . $dir . $fn);
}
print $count . "\n";
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