ImagePlus[] imp = null;
if (arg.equals("")) {
JFileChooser fc = new JFileChooser();
fc.addChoosableFileFilter(new ImageFilter());
fc.setAcceptAllFileFilterUsed(false);
fc.setAccessory(new ImagePreview(masterModel, fc));
fc.setName("Open Zeiss LSM image");
String dds = OpenDialog.getDefaultDirectory();
if (dds != null) {
File dd = new File(dds);
if (dd != null && dd.isDirectory())