diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/attr_value.proto opencv-3.4.1/modules/dnn/src/tensorflow/attr_value.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/attr_value.proto	2019-09-25 18:44:21.754250426 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/attr_value.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "AttrValueProtos";
 option java_multiple_files = true;
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/function.proto opencv-3.4.1/modules/dnn/src/tensorflow/function.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/function.proto	2019-09-25 18:44:21.754250426 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/function.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "FunctionProtos";
 option java_multiple_files = true;
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/graph.proto opencv-3.4.1/modules/dnn/src/tensorflow/graph.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/graph.proto	2019-09-25 18:44:21.754250426 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/graph.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "GraphProtos";
 option java_multiple_files = true;
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/op_def.proto opencv-3.4.1/modules/dnn/src/tensorflow/op_def.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/op_def.proto	2019-09-25 18:44:21.754250426 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/op_def.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "OpDefProtos";
 option java_multiple_files = true;
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/tensor.proto opencv-3.4.1/modules/dnn/src/tensorflow/tensor.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/tensor.proto	2019-09-25 18:44:21.754250426 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/tensor.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "TensorProtos";
 option java_multiple_files = true;
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/tensor_shape.proto opencv-3.4.1/modules/dnn/src/tensorflow/tensor_shape.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/tensor_shape.proto	2019-09-25 18:44:21.754250426 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/tensor_shape.proto	2019-09-25 18:45:54.050942238 +0800
@@ -6,7 +6,7 @@
 option java_multiple_files = true;
 option java_package = "org.tensorflow.framework";
 
-package tensorflow;
+package opencv_tensorflow;
 
 // Dimensions of a tensor.
 message TensorShapeProto {
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/tf_io.hpp opencv-3.4.1/modules/dnn/src/tensorflow/tf_io.hpp
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/tf_io.hpp	2019-09-25 18:44:21.755250423 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/tf_io.hpp	2019-09-25 18:45:54.050942238 +0800
@@ -15,6 +15,8 @@
 
 #include "graph.pb.h"
 
+namespace tensorflow { using namespace opencv_tensorflow; }
+
 namespace cv {
 namespace dnn {
 
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/types.proto opencv-3.4.1/modules/dnn/src/tensorflow/types.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/types.proto	2019-09-25 18:44:21.755250423 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/types.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "TypesProtos";
 option java_multiple_files = true;
diff -ur opencv-3.4.1.orig/modules/dnn/src/tensorflow/versions.proto opencv-3.4.1/modules/dnn/src/tensorflow/versions.proto
--- opencv-3.4.1.orig/modules/dnn/src/tensorflow/versions.proto	2019-09-25 18:44:21.755250423 +0800
+++ opencv-3.4.1/modules/dnn/src/tensorflow/versions.proto	2019-09-25 18:45:54.050942238 +0800
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-package tensorflow;
+package opencv_tensorflow;
 option cc_enable_arenas = true;
 option java_outer_classname = "VersionsProtos";
 option java_multiple_files = true;