Merge remote-tracking branch 'upstream/3.4' into merge-3.4

modules/core/include/opencv2/core/bindings_utils.hpp

@@ -8,6 +8,8 @@
 #include <opencv2/core/async.hpp>
 #include <opencv2/core/detail/async_promise.hpp>
 
+#include <stdexcept>
+
 namespace cv { namespace utils {
 //! @addtogroup core_utils
 //! @{
@@ -113,6 +115,12 @@ String dumpRange(const Range& argument)
     }
 }
 
+CV_WRAP static inline
+void testRaiseGeneralException()
+{
+    throw std::runtime_error("exception text");
+}
+
 CV_WRAP static inline
 AsyncArray testAsyncArray(InputArray argument)
 {

modules/dnn/include/opencv2/dnn/shape_utils.hpp

@@ -205,21 +205,33 @@ static inline std::ostream& operator<<(std::ostream &out, const MatShape& shape)
     return out;
 }
 
-inline int clamp(int ax, int dims)
+/// @brief Converts axis from `[-dims; dims)` (similar to Python's slice notation) to `[0; dims)` range.
+static inline
+int normalize_axis(int axis, int dims)
 {
-    return ax < 0 ? ax + dims : ax;
+    CV_Check(axis, axis >= -dims && axis < dims, "");
+    axis = (axis < 0) ? (dims + axis) : axis;
+    CV_DbgCheck(axis, axis >= 0 && axis < dims, "");
+    return axis;
 }
 
-inline int clamp(int ax, const MatShape& shape)
+static inline
+int normalize_axis(int axis, const MatShape& shape)
 {
-    return clamp(ax, (int)shape.size());
+    return normalize_axis(axis, (int)shape.size());
 }
 
-inline Range clamp(const Range& r, int axisSize)
+static inline
+Range normalize_axis_range(const Range& r, int axisSize)
 {
-    Range clamped(std::max(r.start, 0),
+    if (r == Range::all())
+        return Range(0, axisSize);
+    CV_CheckGE(r.start, 0, "");
+    Range clamped(r.start,
                   r.end > 0 ? std::min(r.end, axisSize) : axisSize + r.end + 1);
-    CV_Assert_N(clamped.start < clamped.end, clamped.end <= axisSize);
+    CV_DbgCheckGE(clamped.start, 0, "");
+    CV_CheckLT(clamped.start, clamped.end, "");
+    CV_CheckLE(clamped.end, axisSize, "");
     return clamped;
 }
 

modules/dnn/include/opencv2/dnn/version.hpp

@@ -6,7 +6,7 @@
 #define OPENCV_DNN_VERSION_HPP
 
 /// Use with major OpenCV version only.
-#define OPENCV_DNN_API_VERSION 20201117
+#define OPENCV_DNN_API_VERSION 20210205
 
 #if !defined CV_DOXYGEN && !defined CV_STATIC_ANALYSIS && !defined CV_DNN_DONT_ADD_INLINE_NS
 #define CV__DNN_INLINE_NS __CV_CAT(dnn4_v, OPENCV_DNN_API_VERSION)

modules/dnn/src/dnn.cpp

@@ -2972,7 +2972,7 @@ struct Net::Impl : public detail::NetImplBase
                 // the concatenation optimization is applied with batch_size > 1.
                 // so, for now, we only apply this optimization in the most popular
                 // case batch_size == 1.
-                int axis = clamp(concatLayer->axis, output.dims);
+                int axis = normalize_axis(concatLayer->axis, output.dims);
                 if( output.total(0, axis) == 1 )
                 {
                     size_t i, ninputs = ld.inputBlobsId.size();

modules/dnn/src/layers/concat_layer.cpp

@@ -79,7 +79,7 @@ public:
     {
         CV_Assert(inputs.size() > 0);
         outputs.resize(1, inputs[0]);
-        int cAxis = clamp(axis, inputs[0]);
+        int cAxis = normalize_axis(axis, inputs[0]);
 
         int axisSum = 0;
         for (size_t i = 0; i < inputs.size(); i++)
@@ -201,7 +201,7 @@ public:
         inps.getUMatVector(inputs);
         outs.getUMatVector(outputs);
 
-        int cAxis = clamp(axis, inputs[0].dims);
+        int cAxis = normalize_axis(axis, inputs[0].dims);
         if (padding)
             return false;
 
@@ -255,7 +255,7 @@ public:
         inputs_arr.getMatVector(inputs);
         outputs_arr.getMatVector(outputs);
 
-        int cAxis = clamp(axis, inputs[0].dims);
+        int cAxis = normalize_axis(axis, inputs[0].dims);
         Mat& outMat = outputs[0];
 
         if (padding)
@@ -296,7 +296,7 @@ public:
         auto context = reinterpret_cast<csl::CSLContext*>(context_);
 
         auto input_wrapper = inputs[0].dynamicCast<CUDABackendWrapper>();
-        auto concat_axis = clamp(axis, input_wrapper->getRank());
+        auto concat_axis = normalize_axis(axis, input_wrapper->getRank());
         return make_cuda_node<cuda4dnn::ConcatOp>(preferableTarget, std::move(context->stream), concat_axis, padding);
     }
 #endif
@@ -305,7 +305,7 @@ public:
     {
 #ifdef HAVE_VULKAN
         vkcom::Tensor in = VkComTensor(input[0]);
-        int cAxis = clamp(axis, in.dimNum());
+        int cAxis = normalize_axis(axis, in.dimNum());
         std::shared_ptr<vkcom::OpBase> op(new vkcom::OpConcat(cAxis));
         return Ptr<BackendNode>(new VkComBackendNode(input, op));
 #endif // HAVE_VULKAN
@@ -341,7 +341,7 @@ public:
         InferenceEngine::DataPtr input = infEngineDataNode(inputs[0]);
 
         InferenceEngine::Builder::ConcatLayer ieLayer(name);
-        ieLayer.setAxis(clamp(axis, input->getDims().size()));
+        ieLayer.setAxis(normalize_axis(axis, input->getDims().size()));
         ieLayer.setInputPorts(std::vector<InferenceEngine::Port>(inputs.size()));
         return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
     }
@@ -354,7 +354,7 @@ public:
     {
         InferenceEngine::DataPtr data = ngraphDataNode(inputs[0]);
         const int numDims = data->getDims().size();
-        const int cAxis = clamp(axis, numDims);
+        const int cAxis = normalize_axis(axis, numDims);
         std::vector<size_t> maxDims(numDims, 0);
 
         CV_Assert(inputs.size() == nodes.size());

modules/dnn/src/layers/flatten_layer.cpp

@@ -89,8 +89,8 @@ public:
         }
 
         int numAxes = inputs[0].size();
-        int startAxis = clamp(_startAxis, numAxes);
-        int endAxis = clamp(_endAxis, numAxes);
+        int startAxis = normalize_axis(_startAxis, numAxes);
+        int endAxis = normalize_axis(_endAxis, numAxes);
 
         CV_Assert(startAxis >= 0);
         CV_Assert(endAxis >= startAxis && endAxis < (int)numAxes);
@@ -120,8 +120,8 @@ public:
         inputs_arr.getMatVector(inputs);
 
         int numAxes = inputs[0].dims;
-        _startAxis = clamp(_startAxis, numAxes);
-        _endAxis = clamp(_endAxis, numAxes);
+        _startAxis = normalize_axis(_startAxis, numAxes);
+        _endAxis = normalize_axis(_endAxis, numAxes);
     }
 
 #ifdef HAVE_OPENCL
@@ -195,8 +195,8 @@ virtual Ptr<BackendNode> initNgraph(const std::vector<Ptr<BackendWrapper> >& inp
         std::vector<size_t> dims = ieInpNode->get_shape();
 
         int numAxes = dims.size();
-        int startAxis = clamp(_startAxis, numAxes);
-        int endAxis = clamp(_endAxis, numAxes);
+        int startAxis = normalize_axis(_startAxis, numAxes);
+        int endAxis = normalize_axis(_endAxis, numAxes);
 
         CV_Assert(startAxis >= 0);
         CV_Assert(endAxis >= startAxis && endAxis < numAxes);

modules/dnn/src/layers/fully_connected_layer.cpp

@@ -132,7 +132,7 @@ public:
             CV_CheckEQ(blobs[0].dims, 2, "");
             numOutput = blobs[0].size[0];
             CV_Assert(!bias || (size_t)numOutput == blobs[1].total());
-            cAxis = clamp(axis, inputs[0]);
+            cAxis = normalize_axis(axis, inputs[0]);
         }
 
         MatShape outShape(cAxis + 1);
@@ -356,7 +356,7 @@ public:
             return true;
         }
 
-        int axisCan = clamp(axis, inputs[0].dims);
+        int axisCan = normalize_axis(axis, inputs[0].dims);
         int numOutput = blobs[0].size[0];
         int innerSize = blobs[0].size[1];
         int outerSize = total(shape(inputs[0]), 0, axisCan);
@@ -477,7 +477,7 @@ public:
 
         if (!blobs.empty())
         {
-            int axisCan = clamp(axis, input[0].dims);
+            int axisCan = normalize_axis(axis, input[0].dims);
             int outerSize = input[0].total(0, axisCan);
 
             for (size_t i = 0; i < input.size(); i++)
@@ -525,7 +525,7 @@ public:
 
         auto input_wrapper = inputs[0].dynamicCast<CUDABackendWrapper>();
 
-        auto flatten_start_axis = clamp(axis, input_wrapper->getRank());
+        auto flatten_start_axis = normalize_axis(axis, input_wrapper->getRank());
 
         auto biasMat_ = bias ? biasMat : Mat();
         return make_cuda_node<cuda4dnn::InnerProductOp>(preferableTarget, std::move(context->stream), std::move(context->cublas_handle), flatten_start_axis, weightsMat, biasMat_);

modules/dnn/src/layers/normalize_bbox_layer.cpp

@@ -126,8 +126,8 @@ public:
 
         const UMat& inp0 = inputs[0];
         UMat& buffer = internals[0];
-        startAxis = clamp(startAxis, inp0.dims);
-        endAxis = clamp(endAxis, inp0.dims);
+        startAxis = normalize_axis(startAxis, inp0.dims);
+        endAxis = normalize_axis(endAxis, inp0.dims);
 
         size_t num = total(shape(inp0.size), 0, startAxis);
         size_t numPlanes = total(shape(inp0.size), startAxis, endAxis + 1);
@@ -211,8 +211,8 @@ public:
 
         const Mat& inp0 = inputs[0];
         Mat& buffer = internals[0];
-        startAxis = clamp(startAxis, inp0.dims);
-        endAxis = clamp(endAxis, inp0.dims);
+        startAxis = normalize_axis(startAxis, inp0.dims);
+        endAxis = normalize_axis(endAxis, inp0.dims);
 
         const float* inpData = inp0.ptr<float>();
         float* outData = outputs[0].ptr<float>();
@@ -378,8 +378,8 @@ public:
 
         NormalizeConfiguration<float> config;
         config.input_shape.assign(std::begin(input_shape), std::end(input_shape));
-        config.axis_start = clamp(startAxis, input_shape.size());
-        config.axis_end = clamp(endAxis, input_shape.size()) + 1; /* +1 because NormalizeOp follows [start, end) convention */
+        config.axis_start = normalize_axis(startAxis, input_shape.size());
+        config.axis_end = normalize_axis(endAxis, input_shape.size()) + 1; /* +1 because NormalizeOp follows [start, end) convention */
         config.norm = pnorm;
         config.eps = epsilon;
 

modules/dnn/src/layers/reshape_layer.cpp

@@ -66,14 +66,7 @@ static void computeShapeByReshapeMask(const MatShape &srcShape,
     int srcShapeSize = (int)srcShape.size();
     int maskShapeSize = (int)maskShape.size();
 
-    if (srcRange == Range::all())
-        srcRange = Range(0, srcShapeSize);
-    else
-    {
-        int sz = srcRange.size();
-        srcRange.start = clamp(srcRange.start, srcShapeSize);
-        srcRange.end = srcRange.end == INT_MAX ? srcShapeSize : srcRange.start + sz;
-    }
+    srcRange = normalize_axis_range(srcRange, srcShapeSize);
 
     bool explicitMask = !maskShape.empty();  // All mask values are positive.
     for (int i = 0, n = maskShape.size(); i < n && explicitMask; ++i)

modules/dnn/src/layers/scale_layer.cpp

@@ -305,7 +305,7 @@ public:
             numChannels = blobs[0].total();
 
         std::vector<size_t> shape(ieInpNode0->get_shape().size(), 1);
-        int cAxis = clamp(axis, shape.size());
+        int cAxis = normalize_axis(axis, shape.size());
         shape[cAxis] = numChannels;
 
         auto node = ieInpNode0;

modules/dnn/src/layers/slice_layer.cpp

@@ -153,7 +153,7 @@ public:
                 for (int j = 0; j < sliceRanges[i].size(); ++j)
                 {
                     if (shapesInitialized || inpShape[j] > 0)
-                        outputs[i][j] = clamp(sliceRanges[i][j], inpShape[j]).size();
+                        outputs[i][j] = normalize_axis_range(sliceRanges[i][j], inpShape[j]).size();
                 }
             }
         }
@@ -216,7 +216,7 @@ public:
             // Clamp.
             for (int j = 0; j < finalSliceRanges[i].size(); ++j)
             {
-                finalSliceRanges[i][j] = clamp(finalSliceRanges[i][j], inpShape[j]);
+                finalSliceRanges[i][j] = normalize_axis_range(finalSliceRanges[i][j], inpShape[j]);
             }
         }
 
@@ -634,7 +634,7 @@ public:
         CV_Assert(inputs.size() == 2);
 
         MatShape dstShape = inputs[0];
-        int start = clamp(axis, dstShape);
+        int start = normalize_axis(axis, dstShape);
         for (int i = start; i < dstShape.size(); i++)
         {
             dstShape[i] = inputs[1][i];
@@ -653,7 +653,7 @@ public:
         const Mat &inpSzBlob = inputs[1];
 
         int dims = inpBlob.dims;
-        int start_axis = clamp(axis, dims);
+        int start_axis = normalize_axis(axis, dims);
 
         std::vector<int> offset_final(dims, 0);
         if (offset.size() == 1)

modules/dnn/src/layers/softmax_layer.cpp

@@ -89,7 +89,7 @@ public:
     {
         bool inplace = Layer::getMemoryShapes(inputs, requiredOutputs, outputs, internals);
         MatShape shape = inputs[0];
-        int cAxis = clamp(axisRaw, shape.size());
+        int cAxis = normalize_axis(axisRaw, shape.size());
         shape[cAxis] = 1;
         internals.assign(1, shape);
         return inplace;
@@ -124,7 +124,7 @@ public:
 
         UMat& src = inputs[0];
         UMat& dstMat = outputs[0];
-        int axis = clamp(axisRaw, src.dims);
+        int axis = normalize_axis(axisRaw, src.dims);
 
         if (softmaxOp.empty())
         {
@@ -216,7 +216,7 @@ public:
         const Mat &src = inputs[0];
         Mat &dst = outputs[0];
 
-        int axis = clamp(axisRaw, src.dims);
+        int axis = normalize_axis(axisRaw, src.dims);
         size_t outerSize = src.total(0, axis), channels = src.size[axis],
                 innerSize = src.total(axis + 1);
 
@@ -306,7 +306,7 @@ public:
         auto context = reinterpret_cast<csl::CSLContext*>(context_);
 
         auto input_wrapper = inputs[0].dynamicCast<CUDABackendWrapper>();
-        auto channel_axis = clamp(axisRaw, input_wrapper->getRank());
+        auto channel_axis = normalize_axis(axisRaw, input_wrapper->getRank());
         return make_cuda_node<cuda4dnn::SoftmaxOp>(preferableTarget, std::move(context->cudnn_handle), channel_axis, logSoftMax);
     }
 #endif
@@ -315,7 +315,7 @@ public:
     {
 #ifdef HAVE_VULKAN
         vkcom::Tensor in = VkComTensor(inputs[0]);
-        int cAxis = clamp(axisRaw, in.dimNum());
+        int cAxis = normalize_axis(axisRaw, in.dimNum());
         std::shared_ptr<vkcom::OpBase> op(new vkcom::OpSoftmax(cAxis, logSoftMax));
         return Ptr<BackendNode>(new VkComBackendNode(inputs, op));
 #endif  // HAVE_VULKAN
@@ -354,7 +354,7 @@ public:
         InferenceEngine::DataPtr input = infEngineDataNode(inputs[0]);
 
         InferenceEngine::Builder::SoftMaxLayer ieLayer(name);
-        ieLayer.setAxis(clamp(axisRaw, input->getDims().size()));
+        ieLayer.setAxis(normalize_axis(axisRaw, input->getDims().size()));
 
         return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
     }
@@ -365,7 +365,7 @@ public:
                                         const std::vector<Ptr<BackendNode> >& nodes) CV_OVERRIDE
     {
         auto& ieInpNode = nodes[0].dynamicCast<InfEngineNgraphNode>()->node;
-        int axis = clamp(axisRaw, ieInpNode->get_shape().size());
+        int axis = normalize_axis(axisRaw, ieInpNode->get_shape().size());
         auto softmax = std::make_shared<ngraph::op::v1::Softmax>(ieInpNode, axis);
         if (logSoftMax)
             return Ptr<BackendNode>(new InfEngineNgraphNode(std::make_shared<ngraph::op::v0::Log>(softmax)));

modules/dnn/src/onnx/onnx_graph_simplifier.cpp

@@ -249,6 +249,40 @@ public:
     }
 };
 
+class NormalizeSubgraph4 : public NormalizeSubgraphBase
+{
+public:
+    NormalizeSubgraph4() : NormalizeSubgraphBase(1)
+    {
+        int input = addNodeToMatch("");
+        int mul = addNodeToMatch("Mul", input, input);
+        int sum = addNodeToMatch("ReduceSum", mul);
+        int eps = addNodeToMatch("");
+        int max = addNodeToMatch("Max", sum, eps);
+        int sqrt = addNodeToMatch("Sqrt", max);
+        int reciprocal = addNodeToMatch("Reciprocal", sqrt);
+        addNodeToMatch("Mul", input, reciprocal);
+        setFusedNode("Normalize", input);
+    }
+};
+
+class NormalizeSubgraph5 : public NormalizeSubgraphBase
+{
+public:
+    NormalizeSubgraph5() : NormalizeSubgraphBase(1)
+    {
+        int input = addNodeToMatch("");
+        int mul = addNodeToMatch("Mul", input, input);
+        int sum = addNodeToMatch("ReduceSum", mul);
+        int clip = addNodeToMatch("Clip", sum);
+        int sqrt = addNodeToMatch("Sqrt", clip);
+        int one = addNodeToMatch("Constant");
+        int div = addNodeToMatch("Div", one, sqrt);
+        addNodeToMatch("Mul", input, div);
+        setFusedNode("Normalize", input);
+    }
+};
+
 class GatherCastSubgraph : public Subgraph
 {
 public:
@@ -526,6 +560,8 @@ void simplifySubgraphs(opencv_onnx::GraphProto& net)
     subgraphs.push_back(makePtr<BatchNormalizationSubgraph2>());
     subgraphs.push_back(makePtr<ExpandSubgraph>());
     subgraphs.push_back(makePtr<MishSubgraph>());
+    subgraphs.push_back(makePtr<NormalizeSubgraph4>());
+    subgraphs.push_back(makePtr<NormalizeSubgraph5>());
 
     simplifySubgraphs(Ptr<ImportGraphWrapper>(new ONNXGraphWrapper(net)), subgraphs);
 }

modules/dnn/src/onnx/onnx_importer.cpp

@@ -503,7 +503,7 @@ void ONNXImporter::handleNode(const opencv_onnx::NodeProto& node_proto_)
                 MatShape targetShape;
                 std::vector<bool> shouldDelete(inpShape.size(), false);
                 for (int i = 0; i < axes.size(); i++) {
-                    int axis = clamp(axes.get<int>(i), inpShape.size());
+                    int axis = normalize_axis(axes.get<int>(i), inpShape.size());
                     shouldDelete[axis] = true;
                 }
                 for (int axis = 0; axis < inpShape.size(); ++axis){
@@ -515,7 +515,7 @@ void ONNXImporter::handleNode(const opencv_onnx::NodeProto& node_proto_)
 
                 if (inpShape.size() == 3 && axes.size() <= 2)
                 {
-                    int axis = clamp(axes.get<int>(0), inpShape.size());
+                    int axis = normalize_axis(axes.get<int>(0), inpShape.size());
                     CV_CheckNE(axis, 0, "");
 
                     LayerParams reshapeLp;
@@ -539,8 +539,8 @@ void ONNXImporter::handleNode(const opencv_onnx::NodeProto& node_proto_)
                     avgLp.set("pool", pool);
                     if (axes.size() == 2)
                     {
-                        CV_CheckEQ(clamp(axes.get<int>(0), inpShape.size()), 1, "Unsupported mode");
-                        CV_CheckEQ(clamp(axes.get<int>(1), inpShape.size()), 2, "Unsupported mode");
+                        CV_CheckEQ(normalize_axis(axes.get<int>(0), inpShape.size()), 1, "Unsupported mode");
+                        CV_CheckEQ(normalize_axis(axes.get<int>(1), inpShape.size()), 2, "Unsupported mode");
                         avgLp.set("global_pooling", true);
                     }
                     else
@@ -560,9 +560,9 @@ void ONNXImporter::handleNode(const opencv_onnx::NodeProto& node_proto_)
 
                     CV_Assert(axes.size() <= inpShape.size() - 2);
                     std::vector<int> kernel_size(inpShape.size() - 2, 1);
-                    if (axes.size() == 1 && (clamp(axes.get<int>(0), inpShape.size()) <= 1))
+                    if (axes.size() == 1 && (normalize_axis(axes.get<int>(0), inpShape.size()) <= 1))
                     {
-                        int axis = clamp(axes.get<int>(0), inpShape.size());
+                        int axis = normalize_axis(axes.get<int>(0), inpShape.size());
                         MatShape newShape = inpShape;
                         newShape[axis + 1] = total(newShape, axis + 1);
                         newShape.resize(axis + 2);
@@ -584,7 +584,7 @@ void ONNXImporter::handleNode(const opencv_onnx::NodeProto& node_proto_)
                     else
                     {
                         for (int i = 0; i < axes.size(); i++) {
-                            int axis = clamp(axes.get<int>(i), inpShape.size());
+                            int axis = normalize_axis(axes.get<int>(i), inpShape.size());
                             CV_Assert_N(axis >= 2 + i, axis < inpShape.size());
                             kernel_size[axis - 2] = inpShape[axis];
                         }
@@ -1376,7 +1376,7 @@ void ONNXImporter::handleNode(const opencv_onnx::NodeProto& node_proto_)
             if (constBlobs.find(node_proto.input(0)) != constBlobs.end())
             {
                 Mat input = getBlob(node_proto, 0);
-                int axis = clamp(layerParams.get<int>("axis", 1), input.dims);
+                int axis = normalize_axis(layerParams.get<int>("axis", 1), input.dims);
 
                 std::vector<int> out_size(&input.size[0], &input.size[0] + axis);
                 out_size.push_back(input.total(axis));

modules/dnn/src/tensorflow/tf_importer.cpp

@@ -2414,6 +2414,16 @@ void TFImporter::parseNode(const tensorflow::NodeDef& layer_)
 
             connect(layer_id, dstNet, parsePin(layer.input(0)), id, 0);
         }
+        else if (type == "LeakyRelu")
+        {
+            CV_CheckGT(num_inputs, 0, "");
+            CV_Assert(hasLayerAttr(layer, "alpha"));
+            layerParams.set("negative_slope", getLayerAttr(layer, "alpha").f());
+
+            int id = dstNet.addLayer(name, "ReLU", layerParams);
+            layer_id[name] = id;
+            connectToAllBlobs(layer_id, dstNet, parsePin(layer.input(0)), id, num_inputs);
+        }
         else if (type == "Abs" || type == "Tanh" || type == "Sigmoid" ||
                  type == "Relu" || type == "Elu" ||
                  type == "Identity" || type == "Relu6")

modules/dnn/test/test_onnx_importer.cpp

@@ -437,6 +437,11 @@ TEST_P(Test_ONNX_layers, BatchNormalizationSubgraph)
     testONNXModels("batch_norm_subgraph");
 }
 
+TEST_P(Test_ONNX_layers, NormalizeFusionSubgraph)
+{
+    testONNXModels("normalize_fusion");
+}
+
 TEST_P(Test_ONNX_layers, Transpose)
 {
     if (backend == DNN_BACKEND_INFERENCE_ENGINE_NN_BUILDER_2019)

modules/dnn/test/test_tf_importer.cpp

@@ -484,6 +484,7 @@ TEST_P(Test_TensorFlow_layers, leaky_relu)
     if (backend == DNN_BACKEND_INFERENCE_ENGINE_NN_BUILDER_2019 && target == DNN_TARGET_OPENCL)
         applyTestTag(CV_TEST_TAG_DNN_SKIP_IE_OPENCL, CV_TEST_TAG_DNN_SKIP_IE_NN_BUILDER, CV_TEST_TAG_DNN_SKIP_IE_VERSION);
 #endif
+    runTensorFlowNet("leaky_relu");
     runTensorFlowNet("leaky_relu_order1");
     runTensorFlowNet("leaky_relu_order2");
     runTensorFlowNet("leaky_relu_order3");

modules/imgproc/doc/colors.markdown

@@ -56,7 +56,10 @@ scaled to fit the 0 to 1 range.
 
 \f[V  \leftarrow max(R,G,B)\f]
 \f[S  \leftarrow \fork{\frac{V-min(R,G,B)}{V}}{if \(V \neq 0\)}{0}{otherwise}\f]
-\f[H  \leftarrow \forkthree{{60(G - B)}/{(V-min(R,G,B))}}{if \(V=R\)}{{120+60(B - R)}/{(V-min(R,G,B))}}{if \(V=G\)}{{240+60(R - G)}/{(V-min(R,G,B))}}{if \(V=B\)}\f]
+\f[H  \leftarrow \forkfour{{60(G - B)}/{(V-min(R,G,B))}}{if \(V=R\)}
+  {{120+60(B - R)}/{(V-min(R,G,B))}}{if \(V=G\)}
+  {{240+60(R - G)}/{(V-min(R,G,B))}}{if \(V=B\)}
+  {0}{if  \(R=G=B\)}\f]
 If \f$H<0\f$ then \f$H \leftarrow H+360\f$ . On output \f$0 \leq V \leq 1\f$, \f$0 \leq S \leq 1\f$,
 \f$0 \leq H \leq 360\f$ .
 
@@ -78,9 +81,10 @@ scaled to fit the 0 to 1 range.
 \f[L  \leftarrow \frac{V_{max} + V_{min}}{2}\f]
 \f[S  \leftarrow \fork { \frac{V_{max} - V_{min}}{V_{max} + V_{min}} }{if  \(L < 0.5\) }
     { \frac{V_{max} - V_{min}}{2 - (V_{max} + V_{min})} }{if  \(L \ge 0.5\) }\f]
-\f[H  \leftarrow \forkthree {{60(G - B)}/{(V_{max}-V_{min})}}{if  \(V_{max}=R\) }
+\f[H  \leftarrow \forkfour {{60(G - B)}/{(V_{max}-V_{min})}}{if  \(V_{max}=R\) }
   {{120+60(B - R)}/{(V_{max}-V_{min})}}{if  \(V_{max}=G\) }
-  {{240+60(R - G)}/{(V_{max}-V_{min})}}{if  \(V_{max}=B\) }\f]
+  {{240+60(R - G)}/{(V_{max}-V_{min})}}{if  \(V_{max}=B\) }
+  {0}{if  \(R=G=B\) }\f]
 If \f$H<0\f$ then \f$H \leftarrow H+360\f$ . On output \f$0 \leq L \leq 1\f$, \f$0 \leq S \leq
 1\f$, \f$0 \leq H \leq 360\f$ .
 

modules/objdetect/src/qrcode.cpp

@@ -2469,12 +2469,13 @@ std::string QRCodeDetector::decode(InputArray in, InputArray points,
     bool ok = qrdec.straightDecodingProcess();
 
     std::string decoded_info = qrdec.getDecodeInformation();
-
-    if (ok && straight_qrcode.needed())
+    if (!ok && straight_qrcode.needed())
+    {
+        straight_qrcode.release();
+    }
+    else if (straight_qrcode.needed())
     {
-        qrdec.getStraightBarcode().convertTo(straight_qrcode,
-                                             straight_qrcode.fixedType() ?
-                                             straight_qrcode.type() : CV_32FC2);
+        qrdec.getStraightBarcode().convertTo(straight_qrcode, CV_8UC1);
     }
 
     return ok ? decoded_info : std::string();
@@ -2498,11 +2499,13 @@ cv::String QRCodeDetector::decodeCurved(InputArray in, InputArray points,
 
     std::string decoded_info = qrdec.getDecodeInformation();
 
-    if (ok && straight_qrcode.needed())
+    if (!ok && straight_qrcode.needed())
     {
-        qrdec.getStraightBarcode().convertTo(straight_qrcode,
-                                             straight_qrcode.fixedType() ?
-                                             straight_qrcode.type() : CV_32FC2);
+        straight_qrcode.release();
+    }
+    else if (straight_qrcode.needed())
+    {
+        qrdec.getStraightBarcode().convertTo(straight_qrcode, CV_8UC1);
     }
 
     return ok ? decoded_info : std::string();
@@ -3593,18 +3596,18 @@ bool QRCodeDetector::decodeMulti(
             for_copy.push_back(straight_barcode[i]);
     }
     straight_barcode = for_copy;
-    vector<Mat> tmp_straight_qrcodes;
-    if (straight_qrcode.needed())
+    if (straight_qrcode.needed() && straight_barcode.size() == 0)
+    {
+        straight_qrcode.release();
+    }
+    else if (straight_qrcode.needed())
     {
+        straight_qrcode.create(Size((int)straight_barcode.size(), 1), CV_8UC1);
+        vector<Mat> tmp_straight_qrcodes(straight_barcode.size());
         for (size_t i = 0; i < straight_barcode.size(); i++)
         {
-            Mat tmp_straight_qrcode;
-            tmp_straight_qrcodes.push_back(tmp_straight_qrcode);
-            straight_barcode[i].convertTo(((OutputArray)tmp_straight_qrcodes[i]),
-                                             ((OutputArray)tmp_straight_qrcodes[i]).fixedType() ?
-                                             ((OutputArray)tmp_straight_qrcodes[i]).type() : CV_32FC2);
+            straight_barcode[i].convertTo(tmp_straight_qrcodes[i], CV_8UC1);
         }
-        straight_qrcode.createSameSize(tmp_straight_qrcodes, CV_32FC2);
         straight_qrcode.assign(tmp_straight_qrcodes);
     }
     decoded_info.clear();

modules/objdetect/test/test_qrcode.cpp

@@ -252,6 +252,8 @@ TEST_P(Objdetect_QRCode, regression)
     decoded_info = qrcode.detectAndDecode(src, corners, straight_barcode);
     ASSERT_FALSE(corners.empty());
     ASSERT_FALSE(decoded_info.empty());
+    int expected_barcode_type = CV_8UC1;
+    EXPECT_EQ(expected_barcode_type, straight_barcode.type());
 #else
     ASSERT_TRUE(qrcode.detect(src, corners));
 #endif
@@ -317,6 +319,8 @@ TEST_P(Objdetect_QRCode_Close, regression)
     decoded_info = qrcode.detectAndDecode(barcode, corners, straight_barcode);
     ASSERT_FALSE(corners.empty());
     ASSERT_FALSE(decoded_info.empty());
+    int expected_barcode_type = CV_8UC1;
+    EXPECT_EQ(expected_barcode_type, straight_barcode.type());
 #else
     ASSERT_TRUE(qrcode.detect(barcode, corners));
 #endif
@@ -382,6 +386,8 @@ TEST_P(Objdetect_QRCode_Monitor, regression)
     decoded_info = qrcode.detectAndDecode(barcode, corners, straight_barcode);
     ASSERT_FALSE(corners.empty());
     ASSERT_FALSE(decoded_info.empty());
+    int expected_barcode_type = CV_8UC1;
+    EXPECT_EQ(expected_barcode_type, straight_barcode.type());
 #else
     ASSERT_TRUE(qrcode.detect(barcode, corners));
 #endif
@@ -442,6 +448,8 @@ TEST_P(Objdetect_QRCode_Curved, regression)
     decoded_info = qrcode.detectAndDecodeCurved(src, corners, straight_barcode);
     ASSERT_FALSE(corners.empty());
     ASSERT_FALSE(decoded_info.empty());
+    int expected_barcode_type = CV_8UC1;
+    EXPECT_EQ(expected_barcode_type, straight_barcode.type());
 #else
     ASSERT_TRUE(qrcode.detect(src, corners));
 #endif
@@ -502,6 +510,9 @@ TEST_P(Objdetect_QRCode_Multi, regression)
     EXPECT_TRUE(qrcode.detectAndDecodeMulti(src, decoded_info, corners, straight_barcode));
     ASSERT_FALSE(corners.empty());
     ASSERT_FALSE(decoded_info.empty());
+    int expected_barcode_type = CV_8UC1;
+    for(size_t i = 0; i < straight_barcode.size(); i++)
+        EXPECT_EQ(expected_barcode_type, straight_barcode[i].type());
 #else
     ASSERT_TRUE(qrcode.detectMulti(src, corners));
 #endif
@@ -612,6 +623,32 @@ TEST(Objdetect_QRCode_detectMulti, detect_regression_16961)
     EXPECT_EQ(corners.size(), expect_corners_size);
 }
 
+TEST(Objdetect_QRCode_decodeMulti, check_output_parameters_type_19363)
+{
+    const std::string name_current_image = "9_qrcodes.jpg";
+    const std::string root = "qrcode/multiple/";
+
+    std::string image_path = findDataFile(root + name_current_image);
+    Mat src = imread(image_path);
+    ASSERT_FALSE(src.empty()) << "Can't read image: " << image_path;
+#ifdef HAVE_QUIRC
+    QRCodeDetector qrcode;
+    std::vector<Point> corners;
+    std::vector<cv::String> decoded_info;
+#if 0  // FIXIT: OutputArray::create() type check
+    std::vector<Mat2b> straight_barcode_nchannels;
+    EXPECT_ANY_THROW(qrcode.detectAndDecodeMulti(src, decoded_info, corners, straight_barcode_nchannels));
+#endif
+
+    int expected_barcode_type = CV_8UC1;
+    std::vector<Mat1b> straight_barcode;
+    EXPECT_TRUE(qrcode.detectAndDecodeMulti(src, decoded_info, corners, straight_barcode));
+    ASSERT_FALSE(corners.empty());
+    for(size_t i = 0; i < straight_barcode.size(); i++)
+        EXPECT_EQ(expected_barcode_type, straight_barcode[i].type());
+#endif
+}
+
 TEST(Objdetect_QRCode_basic, not_found_qrcode)
 {
     std::vector<Point> corners;

modules/python/src2/cv2.cpp

@@ -209,6 +209,11 @@ catch (const cv::Exception &e) \
 { \
     pyRaiseCVException(e); \
     return 0; \
+} \
+catch (const std::exception &e) \
+{ \
+    PyErr_SetString(opencv_error, e.what()); \
+    return 0; \
 }
 
 using namespace cv;

modules/python/test/test_misc.py

@@ -47,6 +47,12 @@ class Bindings(NewOpenCVTests):
         boost.getMaxDepth()  # from ml::DTrees
         boost.isClassifier()  # from ml::StatModel
 
+    def test_raiseGeneralException(self):
+        with self.assertRaises((cv.error,),
+                            msg='C++ exception is not propagated to Python in the right way') as cm:
+            cv.utils.testRaiseGeneralException()
+        self.assertEqual(str(cm.exception), 'exception text')
+
     def test_redirectError(self):
         try:
             cv.imshow("", None)  # This causes an assert

modules/stitching/test/test_matchers.cpp

@@ -43,7 +43,7 @@
 
 namespace opencv_test { namespace {
 
-#ifdef HAVE_OPENCV_XFEATURES2D
+#if defined(HAVE_OPENCV_XFEATURES2D) && defined(OPENCV_ENABLE_NONFREE)
 
 TEST(SurfFeaturesFinder, CanFindInROIs)
 {
@@ -80,7 +80,7 @@ TEST(SurfFeaturesFinder, CanFindInROIs)
     EXPECT_EQ(bad_count, 0);
 }
 
-#endif // HAVE_OPENCV_XFEATURES2D
+#endif // HAVE_OPENCV_XFEATURES2D && OPENCV_ENABLE_NONFREE
 
 TEST(ParallelFeaturesFinder, IsSameWithSerial)
 {