public static function set_global_threshold($dataDir = null)
{
# Initialize a string with template file location
$template_file = $dataDir . "template.amr";
# Initialize a string with scanned image file location
$image_file = $dataDir . "sample_omr.jpg";
# Create an instance of OmrTemplate class and load the template using the factory method Load
$omrTemplate = new OmrTemplate();
$omrTemplate = $omrTemplate->load($template_file);
# Create an instance of OmrImage class and load the template using the factory method Load
$omrImage = new OmrImage();
$omrImage = $omrImage->load($image_file);
# Create an instance of OmrEngine class
$omrEngine = new OmrEngine();
$engine = new OmrEngine($omrTemplate);
# Get the configurations of OmrEngine
$config = $engine->getConfiguration();
# Set fill threshold
$config->setFillThreshold(0.12);
# Extract the OMR data
$ary = array($omrImage);
$result = $engine->extractData($ary);
print "Set global threshold." . PHP_EOL;
}
