Checking in blob routines.
Change-Id: I364331d6f9239763ccac492460ed752a0b16871f
diff --git a/aos/vision/blob/find_blob.h b/aos/vision/blob/find_blob.h
new file mode 100644
index 0000000..b167c3e
--- /dev/null
+++ b/aos/vision/blob/find_blob.h
@@ -0,0 +1,16 @@
+#ifndef _AOS_VISION_BLOB_FIND_BLOB_H_
+#define _AOS_VISION_BLOB_FIND_BLOB_H_
+
+#include "aos/vision/blob/range_image.h"
+
+namespace aos {
+namespace vision {
+
+// Uses disjoint sets to group ranges into disjoint RangeImage.
+// ranges that overlap are grouped into the same output RangeImage.
+BlobList FindBlobs(const RangeImage &rimg);
+
+} // namespace vision
+} // namespace aos
+
+#endif // _AOS_VISION_BLOB_FIND_BLOB_H_