Merge pull request #20904 from Crayon-new:fix_bug_in_maxLayer

fix bug: wrong output dimension when "keep_dims" is false in pooling layer.

* fix bug in max layer

* code align

* delete permute layer and add test case

* add name assert

* check other cases

* remove c++11 features

* style:add "const" remove assert

* style:sanitize file names

modules/dnn/src/tensorflow/tf_importer.cpp

@@ -2142,6 +2142,7 @@ void TFImporter::parseMean(tensorflow::GraphDef& net, const tensorflow::NodeDef&
     const std::string& type = layer.op();
     const int num_inputs = layer.input_size();
     std::string pool_type = cv::toLowerCase(type);
+    DataLayout layout = getDataLayout(name, data_layouts);
 
     if (pool_type == "mean")
     {
@@ -2205,6 +2206,16 @@ void TFImporter::parseMean(tensorflow::GraphDef& net, const tensorflow::NodeDef&
 
         if (!keepDims)
         {
+            if (layout == DATA_LAYOUT_NHWC)
+            {
+                LayerParams permLP;
+                int order[] = {0, 2, 3, 1};  // From OpenCV's NCHW to NHWC.
+                std::string permName = name + "/nhwc";
+                Pin inpId = Pin(layerShapeName);
+                addPermuteLayer(order, permName, inpId);
+                layerShapeName = permName;
+            }
+
             LayerParams squeezeLp;
             std::string squeezeName = name + "/squeeze";
             CV_Assert(layer_id.find(squeezeName) == layer_id.end());
@@ -2227,22 +2238,30 @@ void TFImporter::parseMean(tensorflow::GraphDef& net, const tensorflow::NodeDef&
             layerParams.set("pool", pool_type);
             layerParams.set(axis == 2 ? "kernel_w" : "kernel_h", 1);
             layerParams.set(axis == 2 ? "global_pooling_h" : "global_pooling_w", true);
+
+            if (keepDims)
+            {
                 int id = dstNet.addLayer(name, "Pooling", layerParams);
                 layer_id[name] = id;
                 connect(layer_id, dstNet, parsePin(layer.input(0)), id, 0);
-
-            if (!keepDims)
+            }
+            else
             {
                 // To keep correct order after squeeze dims we first need to change layout from NCHW to NHWC
+                std::string poolingName = name + "/Pooling";
+                CV_Assert(layer_id.find(poolingName) == layer_id.end());
+                int id = dstNet.addLayer(poolingName, "Pooling", layerParams);
+                layer_id[poolingName] = id;
+                connect(layer_id, dstNet, parsePin(layer.input(0)), id, 0);
+
                 LayerParams permLP;
                 int order[] = {0, 2, 3, 1};  // From OpenCV's NCHW to NHWC.
-                std::string permName = name + "/nchw";
-                Pin inpId = Pin(name);
+                std::string permName = name + "/nhwc";
+                Pin inpId = Pin(poolingName);
                 addPermuteLayer(order, permName, inpId);
 
                 LayerParams squeezeLp;
-                std::string squeezeName = name + "/squeeze";
-                CV_Assert(layer_id.find(squeezeName) == layer_id.end());
+                const std::string& squeezeName = name;
                 squeezeLp.set("axis", indices.at<int>(0));
                 squeezeLp.set("end_axis", indices.at<int>(0) + 1);
                 int squeezeId = dstNet.addLayer(squeezeName, "Flatten", squeezeLp);
@@ -2254,32 +2273,34 @@ void TFImporter::parseMean(tensorflow::GraphDef& net, const tensorflow::NodeDef&
         {
             int order[] = {0, 2, 3, 1};  // From OpenCV's NCHW to NHWC.
             Pin inpId = parsePin(layer.input(0));
-            addPermuteLayer(order, name + "/nhwc", inpId);
+            std::string permName = name + "/nhwc";
+            addPermuteLayer(order, permName, inpId);
 
             layerParams.set("pool", pool_type);
             layerParams.set("kernel_h", 1);
             layerParams.set("global_pooling_w", true);
-            int id = dstNet.addLayer(name, "Pooling", layerParams);
-            layer_id[name] = id;
-            connect(layer_id, dstNet, inpId, id, 0);
+            std::string poolingName = name + "/Pooling";
+            CV_Assert(layer_id.find(poolingName) == layer_id.end());
+            int id = dstNet.addLayer(poolingName, "Pooling", layerParams);
+            layer_id[poolingName] = id;
+            connect(layer_id, dstNet, Pin(permName), id, 0);
 
             if (!keepDims)
             {
                 LayerParams squeezeLp;
-                std::string squeezeName = name + "/squeeze";
-                CV_Assert(layer_id.find(squeezeName) == layer_id.end());
+                const std::string& squeezeName = name;
                 int channel_id = 3; // TF NHWC layout
                 squeezeLp.set("axis", channel_id - 1);
                 squeezeLp.set("end_axis", channel_id);
                 int squeezeId = dstNet.addLayer(squeezeName, "Flatten", squeezeLp);
                 layer_id[squeezeName] = squeezeId;
-                connect(layer_id, dstNet, Pin(name), squeezeId, 0);
+                connect(layer_id, dstNet, Pin(poolingName), squeezeId, 0);
             }
             else
             {
                 int order[] = {0, 3, 1, 2};  // From NHWC to OpenCV's NCHW.
-                Pin inpId = parsePin(name);
-                addPermuteLayer(order, name + "/nchw", inpId);
+                Pin inpId = parsePin(poolingName);
+                addPermuteLayer(order, name, inpId);
             }
         }
     } else {
@@ -2288,18 +2309,26 @@ void TFImporter::parseMean(tensorflow::GraphDef& net, const tensorflow::NodeDef&
 
         layerParams.set("pool", pool_type);
         layerParams.set("global_pooling", true);
+
+        if (keepDims)
+        {
             int id = dstNet.addLayer(name, "Pooling", layerParams);
             layer_id[name] = id;
             connect(layer_id, dstNet, parsePin(layer.input(0)), id, 0);
-
-        if (!keepDims)
+        }
+        else
         {
+            std::string poolingName = name + "/Pooling";
+            CV_Assert(layer_id.find(poolingName) == layer_id.end());
+            int id = dstNet.addLayer(poolingName, "Pooling", layerParams);
+            layer_id[poolingName] = id;
+            connect(layer_id, dstNet, parsePin(layer.input(0)), id, 0);
             LayerParams flattenLp;
-            std::string flattenName = name + "/flatten";
-            CV_Assert(layer_id.find(flattenName) == layer_id.end());
+            const std::string& flattenName = name;
             int flattenId = dstNet.addLayer(flattenName, "Flatten", flattenLp);
             layer_id[flattenName] = flattenId;
-            connect(layer_id, dstNet, Pin(name), flattenId, 0);
+            connect(layer_id, dstNet, Pin(poolingName), flattenId, 0);
+            data_layouts[name] = DATA_LAYOUT_PLANAR;
         }
     }
 }

modules/dnn/test/test_tf_importer.cpp

@@ -413,6 +413,19 @@ TEST_P(Test_TensorFlow_layers, pooling_reduce_sum)
     runTensorFlowNet("reduce_sum");  // a SUM pooling over all spatial dimensions.
 }
 
+TEST_P(Test_TensorFlow_layers, pooling_reduce_sum2)
+{
+    int axises[] = {0, 1, 2, 3};
+    for (int keepdims = 0; keepdims <= 1; ++keepdims)
+    {
+        for (int i = 0; i < sizeof(axises)/sizeof(axises[0]); ++i)
+        {
+            runTensorFlowNet(cv::format("reduce_sum_%d_%s", axises[i], (keepdims ? "True" : "False")));
+        }
+        runTensorFlowNet(cv::format("reduce_sum_1_2_%s", keepdims ? "True" : "False"));
+    }
+}
+
 TEST_P(Test_TensorFlow_layers, max_pool_grad)
 {
     if (backend == DNN_BACKEND_INFERENCE_ENGINE_NN_BUILDER_2019)