Merge pull request #15203 from l-bat:determine_inp_shape

* Determine input shapes

* Add test

* Remove getInputShapes

* Fix model

* Fix constructors

* Add Caffe test

* Fix predict

modules/dnn/src/caffe/caffe_importer.cpp

@@ -424,6 +424,36 @@ public:
         }
         dstNet.setInputsNames(netInputs);
 
+        std::vector<MatShape> inp_shapes;
+        if (net.input_shape_size() > 0 || (layersSize > 0 && net.layer(0).has_input_param() &&
+            net.layer(0).input_param().shape_size() > 0)) {
+
+            int size = (net.input_shape_size() > 0) ? net.input_shape_size() :
+                                                      net.layer(0).input_param().shape_size();
+            for (int inp_id = 0; inp_id < size; inp_id++)
+            {
+                const caffe::BlobShape &_input_shape = (net.input_shape_size() > 0) ?
+                                                        net.input_shape(inp_id) :
+                                                        net.layer(0).input_param().shape(inp_id);
+                MatShape shape;
+                for (int i = 0; i < _input_shape.dim_size(); i++) {
+                    shape.push_back((int)_input_shape.dim(i));
+                }
+                inp_shapes.push_back(shape);
+            }
+        }
+        else if (net.input_dim_size() > 0) {
+            MatShape shape;
+            for (int dim = 0; dim < net.input_dim_size(); dim++) {
+                shape.push_back(net.input_dim(dim));
+            }
+            inp_shapes.push_back(shape);
+        }
+
+        for (int inp_id = 0; inp_id < inp_shapes.size(); inp_id++) {
+            dstNet.setInput(Mat(inp_shapes[inp_id], CV_32F), netInputs[inp_id]);
+        }
+
         addedBlobs.clear();
     }
 

modules/dnn/src/dnn.cpp

@@ -2455,6 +2455,18 @@ struct Net::Impl
     {
         std::vector<LayerPin>& inputLayerIds = layers[id].inputBlobsId;
 
+        if (inOutShapes[0].in[0].empty() && !layers[0].outputBlobs.empty())
+        {
+            ShapesVec shapes;
+            for (int i = 0; i < layers[0].outputBlobs.size(); i++)
+            {
+                Mat& inp = layers[0].outputBlobs[i];
+                CV_Assert(inp.total());
+                shapes.push_back(shape(inp));
+            }
+            inOutShapes[0].in = shapes;
+         }
+
         if (inOutShapes[id].in.empty())
         {
             for(int i = 0; i < inputLayerIds.size(); i++)
@@ -2595,14 +2607,23 @@ Net Net::readFromModelOptimizer(const String& xml, const String& bin)
     InferenceEngine::CNNNetwork ieNet = reader.getNetwork();
 
     std::vector<String> inputsNames;
+    std::vector<MatShape> inp_shapes;
     for (auto& it : ieNet.getInputsInfo())
     {
         inputsNames.push_back(it.first);
+        std::vector<size_t> dims = it.second->getTensorDesc().getDims();
+        inp_shapes.push_back(std::vector<int>(dims.begin(), dims.end()));
     }
 
     Net cvNet;
     cvNet.setInputsNames(inputsNames);
 
+    // set empty input to determine input shapes
+    for (int inp_id = 0; inp_id < inputsNames.size(); ++inp_id)
+    {
+        cvNet.setInput(Mat(inp_shapes[inp_id], CV_32F), inputsNames[inp_id]);
+    }
+
     Ptr<InfEngineBackendNode> backendNode(new InfEngineBackendNode(InferenceEngine::Builder::Layer("")));
     backendNode->net = Ptr<InfEngineBackendNet>(new InfEngineBackendNet(ieNet));
     for (auto& it : ieNet.getOutputsInfo())

modules/dnn/src/model.cpp

@@ -47,12 +47,22 @@ Model::Model(const String& model, const String& config)
     : Net(readNet(model, config)), impl(new Impl)
 {
     impl->outNames = getUnconnectedOutLayersNames();
-}
+    std::vector<MatShape> inLayerShapes;
+    std::vector<MatShape> outLayerShapes;
+    getLayerShapes(MatShape(), 0, inLayerShapes, outLayerShapes);
+    if (!inLayerShapes.empty() && inLayerShapes[0].size() == 4)
+        impl->size = Size(inLayerShapes[0][3], inLayerShapes[0][2]);
+};
 
 Model::Model(const Net& network) : Net(network), impl(new Impl)
 {
     impl->outNames = getUnconnectedOutLayersNames();
-}
+    std::vector<MatShape> inLayerShapes;
+    std::vector<MatShape> outLayerShapes;
+    getLayerShapes(MatShape(), 0, inLayerShapes, outLayerShapes);
+    if (!inLayerShapes.empty() && inLayerShapes[0].size() == 4)
+        impl->size = Size(inLayerShapes[0][3], inLayerShapes[0][2]);
+};
 
 Model& Model::setInputSize(const Size& size)
 {

modules/dnn/test/test_caffe_importer.cpp

@@ -479,18 +479,17 @@ TEST_P(Test_Caffe_nets, DenseNet_121)
     applyTestTag(CV_TEST_TAG_MEMORY_512MB);
     checkBackend();
     const string proto = findDataFile("dnn/DenseNet_121.prototxt", false);
-    const string model = findDataFile("dnn/DenseNet_121.caffemodel", false);
+    const string weights = findDataFile("dnn/DenseNet_121.caffemodel", false);
 
     Mat inp = imread(_tf("dog416.png"));
-    inp = blobFromImage(inp, 1.0 / 255, Size(224, 224), Scalar(), true, true);
+    Model model(proto, weights);
+    model.setInputScale(1.0 / 255).setInputSwapRB(true).setInputCrop(true);
+    std::vector<Mat> outs;
     Mat ref = blobFromNPY(_tf("densenet_121_output.npy"));
 
-    Net net = readNetFromCaffe(proto, model);
+    model.setPreferableBackend(backend);
-    net.setPreferableBackend(backend);
+    model.setPreferableTarget(target);
-    net.setPreferableTarget(target);
+    model.predict(inp, outs);
-
-    net.setInput(inp);
-    Mat out = net.forward();
 
     // Reference is an array of 1000 values from a range [-6.16, 7.9]
     float l1 = default_l1, lInf = default_lInf;
@@ -506,9 +505,9 @@ TEST_P(Test_Caffe_nets, DenseNet_121)
     {
         l1 = 0.11; lInf = 0.5;
     }
-    normAssert(out, ref, "", l1, lInf);
+    normAssert(outs[0], ref, "", l1, lInf);
     if (target != DNN_TARGET_MYRIAD || getInferenceEngineVPUType() != CV_DNN_INFERENCE_ENGINE_VPU_TYPE_MYRIAD_X)
-        expectNoFallbacksFromIE(net);
+        expectNoFallbacksFromIE(model);
 }
 
 TEST(Test_Caffe, multiple_inputs)

modules/dnn/test/test_ie_models.cpp

@@ -240,20 +240,6 @@ void runIE(Target target, const std::string& xmlPath, const std::string& binPath
     infRequest.Infer();
 }
 
-std::vector<String> getOutputsNames(const Net& net)
-{
-    std::vector<String> names;
-    if (names.empty())
-    {
-        std::vector<int> outLayers = net.getUnconnectedOutLayers();
-        std::vector<String> layersNames = net.getLayerNames();
-        names.resize(outLayers.size());
-        for (size_t i = 0; i < outLayers.size(); ++i)
-            names[i] = layersNames[outLayers[i] - 1];
-    }
-    return names;
-}
-
 void runCV(Target target, const std::string& xmlPath, const std::string& binPath,
            const std::map<std::string, cv::Mat>& inputsMap,
            std::map<std::string, cv::Mat>& outputsMap)
@@ -263,7 +249,7 @@ void runCV(Target target, const std::string& xmlPath, const std::string& binPath
         net.setInput(it.second, it.first);
     net.setPreferableTarget(target);
 
-    std::vector<String> outNames = getOutputsNames(net);
+    std::vector<String> outNames = net.getUnconnectedOutLayersNames();
     std::vector<Mat> outs;
     net.forward(outs, outNames);
 
@@ -319,5 +305,46 @@ INSTANTIATE_TEST_CASE_P(/**/,
     )
 );
 
+typedef TestWithParam<Target> DNNTestHighLevelAPI;
+TEST_P(DNNTestHighLevelAPI, predict)
+{
+    initDLDTDataPath();
+
+    Target target = (dnn::Target)(int)GetParam();
+    bool isFP16 = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD);
+
+    OpenVINOModelTestCaseInfo modelInfo = getOpenVINOTestModels().find("age-gender-recognition-retail-0013")->second;
+
+    std::string modelPath = isFP16 ? modelInfo.modelPathFP16 : modelInfo.modelPathFP32;
+
+    std::string xmlPath = findDataFile(modelPath + ".xml");
+    std::string binPath = findDataFile(modelPath + ".bin");
+
+    Model model(xmlPath, binPath);
+    Mat frame = imread(findDataFile("dnn/googlenet_1.png"));
+    std::vector<Mat> outs;
+    model.setPreferableBackend(DNN_BACKEND_INFERENCE_ENGINE);
+    model.setPreferableTarget(target);
+    model.predict(frame, outs);
+
+    Net net = readNet(xmlPath, binPath);
+    Mat input = blobFromImage(frame, 1.0, Size(62, 62));
+    net.setInput(input);
+    net.setPreferableBackend(DNN_BACKEND_INFERENCE_ENGINE);
+    net.setPreferableTarget(target);
+
+    std::vector<String> outNames = net.getUnconnectedOutLayersNames();
+    std::vector<Mat> refs;
+    net.forward(refs, outNames);
+
+    CV_Assert(refs.size() == outs.size());
+    for (int i = 0; i < refs.size(); ++i)
+        normAssert(outs[i], refs[i]);
+}
+
+INSTANTIATE_TEST_CASE_P(/**/,
+    DNNTestHighLevelAPI, testing::ValuesIn(getAvailableTargets(DNN_BACKEND_INFERENCE_ENGINE))
+);
+
 }}
 #endif  // HAVE_INF_ENGINE