diff --git a/src/java/com/threerings/media/image/BlankMirage.java b/src/java/com/threerings/media/image/BlankMirage.java
index 89188c693..acc94708a 100644
--- a/src/java/com/threerings/media/image/BlankMirage.java
+++ b/src/java/com/threerings/media/image/BlankMirage.java
@@ -1,5 +1,5 @@
 //
-// $Id: BlankMirage.java,v 1.1 2003/01/13 22:49:46 mdb Exp $
+// $Id: BlankMirage.java,v 1.2 2003/01/17 02:30:21 mdb Exp $
 
 package com.threerings.media.image;
 
@@ -42,6 +42,12 @@ public class BlankMirage implements Mirage
         return false;
     }
 
+    // documentation inherited from interface
+    public long getEstimatedMemoryUsage ()
+    {
+        return 0;
+    }
+
     // documentation inherited from interface
     public BufferedImage getSnapshot ()
     {
diff --git a/src/java/com/threerings/media/image/BufferedMirage.java b/src/java/com/threerings/media/image/BufferedMirage.java
index 676c33462..6ae5e70df 100644
--- a/src/java/com/threerings/media/image/BufferedMirage.java
+++ b/src/java/com/threerings/media/image/BufferedMirage.java
@@ -1,5 +1,5 @@
 //
-// $Id: BufferedMirage.java,v 1.1 2003/01/13 22:49:46 mdb Exp $
+// $Id: BufferedMirage.java,v 1.2 2003/01/17 02:30:21 mdb Exp $
 
 package com.threerings.media.image;
 
@@ -40,6 +40,12 @@ public class BufferedMirage implements Mirage
         return ImageUtil.hitTest(_image, x, y);
     }
 
+    // documentation inherited from interface
+    public long getEstimatedMemoryUsage ()
+    {
+        return ImageUtil.getEstimatedMemoryUsage(_image.getRaster());
+    }
+
     // documentation inherited from interface
     public BufferedImage getSnapshot ()
     {
diff --git a/src/java/com/threerings/media/image/Mirage.java b/src/java/com/threerings/media/image/Mirage.java
index 2eb033244..81ad086f8 100644
--- a/src/java/com/threerings/media/image/Mirage.java
+++ b/src/java/com/threerings/media/image/Mirage.java
@@ -1,5 +1,5 @@
 //
-// $Id: Mirage.java,v 1.1 2003/01/13 22:49:46 mdb Exp $
+// $Id: Mirage.java,v 1.2 2003/01/17 02:30:21 mdb Exp $
 
 package com.threerings.media.image;
 
@@ -40,4 +40,10 @@ public interface Mirage
      * should <em>not</em> be modified by the caller.
      */
     public BufferedImage getSnapshot ();
+
+    /**
+     * Returns an estimate of the memory consumed by this mirage's image
+     * raster data.
+     */
+    public long getEstimatedMemoryUsage ();
 }
diff --git a/src/java/com/threerings/media/image/VolatileMirage.java b/src/java/com/threerings/media/image/VolatileMirage.java
index ac437789d..688a61973 100644
--- a/src/java/com/threerings/media/image/VolatileMirage.java
+++ b/src/java/com/threerings/media/image/VolatileMirage.java
@@ -1,5 +1,5 @@
 //
-// $Id: VolatileMirage.java,v 1.3 2003/01/14 04:18:25 mdb Exp $
+// $Id: VolatileMirage.java,v 1.4 2003/01/17 02:30:21 mdb Exp $
 
 package com.threerings.media.image;
 
@@ -85,6 +85,12 @@ public abstract class VolatileMirage implements Mirage
         return ImageUtil.hitTest(_image, x, y);
     }
 
+    // documentation inherited from interface
+    public long getEstimatedMemoryUsage ()
+    {
+        return ImageUtil.getEstimatedMemoryUsage(_image.getRaster());
+    }
+
     // documentation inherited from interface
     public BufferedImage getSnapshot ()
     {