remove decoding of the numpy arrays for patterns

glassure/pattern.py

@@ -328,10 +328,9 @@ def __str__(self):
 def validate(value):
     if isinstance(value, list):
         return np.array(value)
-    if isinstance(value, str):
+    if isinstance(value, str) or isinstance(value, bytes):
         try:
-            v = base64.b64decode(value)
-            numpy_array = np.load(io.BytesIO(v), allow_pickle=False)
+            numpy_array = np.load(io.BytesIO(value), allow_pickle=False)
             return numpy_array
         except Exception as e:
             raise ValueError(f"Could not decode numpy array: {e}")
@@ -345,7 +344,7 @@ def serialize(value):
         # Save numpy array to bytes
         with io.BytesIO() as buffer:
             np.save(buffer, value, allow_pickle=False)
-            return base64.b64encode(buffer.getvalue()).decode("utf-8")
+            return buffer.getvalue()
     raise TypeError(f"Invalid type for numpy array: {type(value)}")