Reduce pixel detection tolerance

tests/test_loc.py

@@ -95,4 +95,4 @@ def test_loc_onnx_pipeline():
             elif key == 'confidence':
                 assert abs(getattr(output, key) - target.get(key)) < 1e-2
             else:
-                assert abs(getattr(output, key) - target.get(key)) < 1e-1
+                assert abs(getattr(output, key) - target.get(key)) < 3