feat(segmentation mode): Add create, and export SEG with Brushes (#3632)

extensions/cornerstone/src/tools/ImageOverlayViewerTool.tsx

@@ -1,5 +1,6 @@
-import { metaData } from '@cornerstonejs/core';
+import { VolumeViewport, metaData } from '@cornerstonejs/core';
 import { utilities } from '@cornerstonejs/core';
+import { IStackViewport, IVolumeViewport, Point3 } from '@cornerstonejs/core/dist/esm/types';
 import { AnnotationDisplayTool, drawing } from '@cornerstonejs/tools';
 import { guid } from '@ohif/core/src/utils';
 
@@ -46,6 +47,15 @@ class ImageOverlayViewerTool extends AnnotationDisplayTool {
     this._cachedOverlayMetadata = new Map();
   };
 
+  protected getReferencedImageId(viewport: IStackViewport | IVolumeViewport): string {
+    if (viewport instanceof VolumeViewport) {
+      return;
+    }
+
+    const targetId = this.getTargetId(viewport);
+    return targetId.split('imageId:')[1];
+  }
+
   renderAnnotation = (enabledElement, svgDrawingHelper) => {
     const { viewport } = enabledElement;