public function __construct() { // sobel horizontal parent::__construct(-1, -2, -1, 0, 0, 0, 1, 2, 1); //4 }
public function __construct() { parent::__construct(0, 0, 0, -1, 1, 0, 0, 0, 0); // edge enhance }
public function __construct() { parent::__construct(-1, 0, 1, -2, 0, 2, -1, 0, 1); }
public function __construct() { parent::__construct(3, 10, 3, 0, 0, 0, -3, -10, -3); }
public function __construct() { parent::__construct(1, 2, 1, 0, 0, 0, -1, -2, -1); }
public function __construct() { parent::__construct(0.0, 0.0, 0.0, -1.0, 1.0, 0.0, 0.0, 0.0, 0.0); // edge enhance }