diff --git a/skimage/util/dtype.py b/skimage/util/dtype.py
index 0ca3197b..ce5acfc1 100644
--- a/skimage/util/dtype.py
+++ b/skimage/util/dtype.py
@@ -150,8 +150,17 @@ def convert(image, dtype, force_copy=False, uniform=False):
     itemsize = dtypeobj.itemsize
     itemsize_in = dtypeobj_in.itemsize
 
-    if kind == 'b' or kind_in == 'b':
+    if kind == 'b':
+        # to binary image
+        prec_loss()
         return dtype(image)
+    
+    if kind_in == 'b':
+        # from binary image, to float and to integer
+        if kind  == 'f':
+            return dtype(image)
+        elif kind in 'ui':
+            return dtype(image) * dtype_range[dtype][1]
 
     if kind in 'ui':
         imin = np.iinfo(dtype).min