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 * Bio-Formats examples
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import java.io.IOException;

import loci.formats.FormatException;
import loci.formats.ImageReader;
import loci.formats.MetadataTools;
import loci.formats.meta.IMetadata;
import ome.units.UNITS;
import ome.units.quantity.Length;
import ome.units.unit.Unit;

/**
 * Example class that shows how to read and convert the physical X, Y and Z dimensions of a file
 * Bio-Formats version 5.1 or later.
 */
public class ReadPhysicalSize {

  /**
   * Reads the physical dimensions of the input file provided then converts and displays them in micrometers
   *
   * @param inputFile the file to be read
   * @throws FormatException if a parsing error occurs processing the file.
   * @throws IOException if an I/O error occurs processing the file
   */
  public static void readPhysicalSize(final String inputFile) throws FormatException, IOException {
    final ImageReader reader = new ImageReader();
    final IMetadata omeMeta = MetadataTools.createOMEXMLMetadata();
    reader.setMetadataStore(omeMeta);
    reader.setId(inputFile);

    final Unit<Length> targetUnit = UNITS.MICROMETER;

    for (int image=0; image<omeMeta.getImageCount(); image++) {
      final Length physSizeX = omeMeta.getPixelsPhysicalSizeX(image);
      final Length physSizeY = omeMeta.getPixelsPhysicalSizeY(image);
      final Length physSizeZ = omeMeta.getPixelsPhysicalSizeZ(image);

      System.out.println("Physical calibration - Image: " + image);

      if (physSizeX != null) {
        final Length convertedSizeX = new Length(physSizeX.value(targetUnit), targetUnit);
        System.out.println("\tX = " + physSizeX.value() + " " + physSizeX.unit().getSymbol()
            + " = " + convertedSizeX.value() + " " + convertedSizeX.unit().getSymbol());
      }
      if (physSizeY != null) {
        final Length convertedSizeY = new Length(physSizeY.value(targetUnit), targetUnit);
        System.out.println("\tY = " + physSizeY.value() + " " + physSizeY.unit().getSymbol()
            + " = " + convertedSizeY.value() + " " + convertedSizeY.unit().getSymbol());
      }
      if (physSizeZ != null) {
        final Length convertedSizeZ = new Length(physSizeZ.value(targetUnit), targetUnit);
        System.out.println("\tZ = " + physSizeZ.value() + " " + physSizeZ.unit().getSymbol()
            + " = " + convertedSizeZ.value() + " " + convertedSizeZ.unit().getSymbol());
      }
    }
    reader.close();
  }
    
  /**
   * To read the physical size dimensions and units of a file and display them in micrometers:
   *
   * $ java ReadPhysicalSize input-file.ome.tiff
   * @param args Input file.
   * @throws FormatException if a parsing error occurs processing the file.
   * @throws IOException if an I/O error occurs processing the file
   */
  public static void main(String[] args) throws Exception {
    readPhysicalSize(args[0]);
  }

}