Remove from the cache when image memory release

Author: nroduit

weasis-core/src/main/java/org/weasis/core/api/media/data/Thumbnail.java

@@ -264,7 +264,7 @@ protected Boolean doInBackground() {
   }
 
   private void loadThumbnail(
-      final MediaElement media, final boolean keepMediaCache, final OpManager opManager) {
+      final MediaElement media, boolean keepMediaCache, OpManager opManager) {
     try {
       File file = thumbnailPath;
       boolean noPath = file == null || !file.canRead();
@@ -310,6 +310,7 @@ private void loadThumbnail(
               if (thumb == null || thumb.width() <= 0) {
                 readable = false;
                 ImageConversion.releasePlanarImage(thumb);
+                keepMediaCache = false;
               } else {
                 mCache.put(this, thumb);
               }

weasis-dicom/weasis-dicom-codec/src/main/java/org/weasis/dicom/codec/BasicContourLoader.java

@@ -55,9 +55,13 @@ public Set<SegContour> getLazyContours() {
 
   private SegContour buildContour() {
     PlanarImage binary = binaryMask.getImage();
+    if (binary == null || binary.width() <= 0) {
+      return null;
+    }
     List<Segment> segmentList = Region.buildSegmentList(binary);
     int pixelCount = Core.countNonZero(binary.toMat());
     ImageConversion.releasePlanarImage(binary);
+    binaryMask.removeImageFromCache();
 
     SegContour contour = new SegContour(String.valueOf(id), segmentList, pixelCount);
     region.addPixels(contour);