robustify code to handle a point outside the image bounds

petercorke · Jul 8, 2018 · ca07680 · ca07680
1 parent df1d178
commit ca07680
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/edgelist.m b/edgelist.m
@@ -64,7 +64,11 @@
     end
 
     P = P(:);
-    pix0 = im(P(2), P(1));  % color of pixel we start at
+    try
+        pix0 = im(P(2), P(1));  % color of pixel we start at
+    catch
+        error('MVTB:edgelist', 'specified coordinate is not within image');
+    end
     P0 = [];
 
     % find an adjacent point outside the blob