function getHash()
{
$hashRect = $this->getHashRectangle();
$hashImg = imagecreatetruecolor($hashRect->getWidth(), $hashRect->getHeight());
imagecopy($hashImg, $this->_img, 0, 0, $hashRect->getLeft(), $hashRect->getTop(), $hashRect->getWidth(), $hashRect->getHeight());
$tempFile = tempnam('', 'phashr');
imagepng($hashImg, $tempFile, 0);
$hash = ph_dct_imagehash($tempFile);
unlink($tempFile);
return $hash;
}
public static function byImage($inputFilePath)
{
$binaryHash = sha1_file($inputFilePath);
$phash = ph_dct_imagehash($inputFilePath);
if (!$phash) {
return false;
}
$results = ImageHash::whereRaw('binary_hash = ? or bit_count(phash ^ ?) <= ?', array($binaryHash, $phash, self::SEARCH_THRESHOLD))->get();
$paths = array();
foreach ($results as $hash) {
$record = $hash->pathRecord;
$path = $record->getPath();
$paths[$record->id] = $path;
}
return $paths;
}
$PATH_ORIG = "../phash/bilder";
$PATH_MOD = "../phash/bilder_mod";
$d = dir($PATH_ORIG);
$bilder = array();
while (false !== ($entry = $d->read())) {
if ($entry == "." || $entry == ".." || !file_exists($PATH_MOD . "/" . $entry)) {
continue;
}
$bilder[] = $entry;
}
$d->close();
$results = array();
for ($i = 0; $i <= sizeof($bilder); $i++) {
if ($bilder[$i] == null) {
break;
}
$image1 = ph_dct_imagehash($PATH_ORIG . "/" . $bilder[$i]);
$image2 = ph_dct_imagehash($PATH_MOD . "/" . $bilder[$i]);
$results[] = ph_image_dist($image1, $image2);
}
$graph = new Graph(350, 200, "auto");
$graph->SetScale("textlin");
$lineplot = new LinePlot($results);
$graph->Add($lineplot);
$lineplot->SetColor("orange");
//$lineplot->SetFillColor("darkorange@0.6");
$lineplot->SetWeight(2);
$lineplot->value->Show();
$lineplot->value->SetFont(FF_FONT0, FS_NORMAL);
$lineplot->value->SetColor("orange");
$graph->Stroke();
