/*$************************************************************************************************
 **
 ** $Id: ImageDatum.java 831 2006-05-01 00:27:23Z Desruisseaux $
 **
 ** $URL: http://svn.code.sf.net/p/geoapi/code/branches/2.0.x/geoapi/src/main/java/org/opengis/referencing/datum/ImageDatum.java $
 **
 ** Copyright (C) 2003-2005 Open GIS Consortium, Inc.
 ** All Rights Reserved. http://www.opengis.org/legal/
 **
 *************************************************************************************************/
package org.opengis.referencing.datum;

// Annotations
import org.opengis.annotation.UML;
import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;


/**
 * Defines the origin of an image coordinate reference system. An image datum is used in a local
 * context only. For an image datum, the anchor point is usually either the centre of the image
 * or the corner of the image.
 *
 * @version Abstract specification 2.0
 * @author ISO/DIS 19111
 * @author Martin Desruisseaux (IRD)
 * @since GeoAPI 1.0
 */
@UML(identifier="CD_ImageDatum", specification=ISO_19111)
public interface ImageDatum extends Datum {
    /**
     * Specification of the way the image grid is associated with the image data attributes.
     *
     * @return The way image grid is associated with image data attributes.
     */
    @UML(identifier="pixelInCell", obligation=MANDATORY, specification=ISO_19111)
    PixelInCell getPixelInCell();
}