1 // This file is part of OpenCV project.
2 // It is subject to the license terms in the LICENSE file found in the top-level directory
3 // of this distribution and at http://opencv.org/license.html.
5 // Copyright (C) 2017, Intel Corporation, all rights reserved.
6 // Third party copyrights are property of their respective owners.
9 Implementation of padding layer, which adds paddings to input blob.
12 #include "../precomp.hpp"
13 #include "layers_common.hpp"
14 #include "../op_cuda.hpp"
15 #include "../op_halide.hpp"
16 #include "../op_inf_engine.hpp"
20 #include "../cuda4dnn/primitives/padding.hpp"
21 using namespace cv::dnn::cuda4dnn;
29 class PaddingLayerImpl CV_FINAL : public PaddingLayer
32 PaddingLayerImpl(const LayerParams ¶ms)
34 setParamsFrom(params);
35 paddingValue = params.get<float>("value", 0);
36 inputDims = params.get<int>("input_dims", -1);
37 paddingType = params.get<String>("type", "constant");
39 CV_Assert(params.has("paddings"));
40 const DictValue& paddingsParam = params.get("paddings");
41 CV_Assert((paddingsParam.size() & 1) == 0);
43 paddings.resize(paddingsParam.size() / 2);
44 for (int i = 0; i < paddings.size(); ++i)
46 paddings[i].first = paddingsParam.get<int>(i * 2); // Pad before.
47 paddings[i].second = paddingsParam.get<int>(i * 2 + 1); // Pad after.
48 CV_Assert_N(paddings[i].first >= 0, paddings[i].second >= 0);
52 bool getMemoryShapes(const std::vector<MatShape> &inputs,
53 const int requiredOutputs,
54 std::vector<MatShape> &outputs,
55 std::vector<MatShape> &internals) const CV_OVERRIDE
57 CV_Assert(inputs.size() == 1);
58 const MatShape& inpShape = inputs[0];
59 CV_Assert(inpShape.size() >= paddings.size());
60 CV_Assert(inputDims == -1 || inpShape.size() == inputDims || inpShape.size() > paddings.size());
62 outputs.resize(1, inpShape);
63 int offset = (inputDims == -1 ? 0 : (inpShape.size() > inputDims ? 1 : 0));
64 for (int i = 0; i < paddings.size(); ++i)
66 outputs[0][offset + i] = inpShape[offset + i] + paddings[i].first + paddings[i].second;
71 void finalize(InputArrayOfArrays inputs_arr, OutputArrayOfArrays) CV_OVERRIDE
73 std::vector<Mat> inputs;
74 inputs_arr.getMatVector(inputs);
77 const MatSize& inpShape = inputs[0].size;
79 if (inputDims != -1 && inputs[0].dims != inputDims)
81 paddings.insert(paddings.begin(), std::make_pair(0, 0));
84 dstRanges.resize(paddings.size());
85 for (int i = 0; i < paddings.size(); ++i)
87 dstRanges[i].start = paddings[i].first;
88 dstRanges[i].end = paddings[i].first + inpShape[i];
91 // Add the rest of dimensions.
92 for (int i = dstRanges.size(); i < inputs[0].dims; ++i)
94 dstRanges.push_back(Range::all());
95 paddings.push_back(std::make_pair(0, 0));
97 inputDims = -1; // Next time paddings are filled for all the dimensions.
100 virtual bool supportBackend(int backendId) CV_OVERRIDE
102 #ifdef HAVE_INF_ENGINE
103 if (backendId == DNN_BACKEND_INFERENCE_ENGINE)
104 return INF_ENGINE_VER_MAJOR_GE(INF_ENGINE_RELEASE_2019R1) &&
105 (preferableTarget != DNN_TARGET_MYRIAD ||
106 (dstRanges.size() == 4 && paddings[0].first == 0 && paddings[0].second == 0));
108 return backendId == DNN_BACKEND_OPENCV ||
109 backendId == DNN_BACKEND_CUDA ||
110 (backendId == DNN_BACKEND_HALIDE && haveHalide() && dstRanges.size() == 4);
113 void forward(InputArrayOfArrays inputs_arr, OutputArrayOfArrays outputs_arr, OutputArrayOfArrays internals_arr) CV_OVERRIDE
116 CV_TRACE_ARG_VALUE(name, "name", name.c_str());
118 std::vector<Mat> inputs, outputs;
119 inputs_arr.getMatVector(inputs);
120 outputs_arr.getMatVector(outputs);
122 if (paddingType == "constant")
124 if (inputs_arr.depth() == CV_16S)
126 std::vector<float> paddingValue_fp32(1, paddingValue);
127 std::vector<int16_t> paddingValue_fp16(1);
128 cv::convertFp16(paddingValue_fp32, paddingValue_fp16);
129 outputs[0].setTo(paddingValue_fp16[0]);
132 outputs[0].setTo(paddingValue);
133 inputs[0].copyTo(outputs[0](dstRanges));
135 else if (paddingType == "reflect")
137 CV_Assert(inputs.size() == 1);
138 CV_Assert(outputs.size() == 1);
139 CV_Assert(inputs[0].dims == 4);
140 CV_Assert(outputs[0].dims == 4);
142 if (inputs[0].size[0] != outputs[0].size[0] || inputs[0].size[1] != outputs[0].size[1])
143 CV_Error(Error::StsNotImplemented, "Only spatial reflection padding is supported.");
145 const int inpHeight = inputs[0].size[2];
146 const int inpWidth = inputs[0].size[3];
147 const int outHeight = outputs[0].size[2];
148 const int outWidth = outputs[0].size[3];
149 const int padTop = dstRanges[2].start;
150 const int padBottom = outHeight - dstRanges[2].end;
151 const int padLeft = dstRanges[3].start;
152 const int padRight = outWidth - dstRanges[3].end;
153 CV_CheckLT(padTop, inpHeight, ""); CV_CheckLT(padBottom, inpHeight, "");
154 CV_CheckLT(padLeft, inpWidth, ""); CV_CheckLT(padRight, inpWidth, "");
156 for (size_t n = 0; n < inputs[0].size[0]; ++n)
158 for (size_t ch = 0; ch < inputs[0].size[1]; ++ch)
160 copyMakeBorder(getPlane(inputs[0], n, ch),
161 getPlane(outputs[0], n, ch),
162 padTop, padBottom, padLeft, padRight,
168 CV_Error(Error::StsNotImplemented, "Unknown padding type: " + paddingType);
172 Ptr<BackendNode> initCUDA(
174 const std::vector<Ptr<BackendWrapper>>& inputs,
175 const std::vector<Ptr<BackendWrapper>>& outputs
178 auto context = reinterpret_cast<csl::CSLContext*>(context_);
180 cuda4dnn::PaddingType ptype;
181 if (paddingType == "constant")
182 ptype = PaddingType::CONSTANT;
183 else if (paddingType == "reflect")
184 ptype = PaddingType::REFLECTION101;
186 CV_Error(Error::StsNotImplemented, "Unsupported padding mode");
188 return make_cuda_node<cuda4dnn::PaddingOp>(preferableTarget, std::move(context->stream), ptype, paddingValue, dstRanges);
192 virtual Ptr<BackendNode> initHalide(const std::vector<Ptr<BackendWrapper> > &inputs) CV_OVERRIDE
195 int inW, inH, inC, inN;
196 int minN = std::max(dstRanges[0].start, 0);
197 int minC = std::max(dstRanges[1].start, 0);
198 int minY = std::max(dstRanges[2].start, 0);
199 int minX = std::max(dstRanges[3].start, 0);
200 Halide::Buffer<float> inputBuffer = halideBuffer(inputs[0]);
201 getCanonicalSize(inputBuffer, &inW, &inH, &inC, &inN);
203 Halide::Var x("x"), y("y"), c("c"), n("n");
204 Halide::Func top = (name.empty() ? Halide::Func() : Halide::Func(name));
205 Halide::Func padded =
206 Halide::BoundaryConditions::constant_exterior(inputBuffer, paddingValue);
207 top(x, y, c, n) = padded(x - minX, y - minY, c - minC, n - minN);
208 return Ptr<BackendNode>(new HalideBackendNode(top));
209 #endif // HAVE_HALIDE
210 return Ptr<BackendNode>();
213 #ifdef HAVE_INF_ENGINE
214 virtual Ptr<BackendNode> initInfEngine(const std::vector<Ptr<BackendWrapper> >&) CV_OVERRIDE
216 InferenceEngine::Builder::Layer ieLayer(name);
217 ieLayer.setName(name);
218 ieLayer.setType("Pad");
220 std::vector<int> begins(paddings.size(), 0), ends(paddings.size(), 0);
221 for (int i = 0; i < paddings.size(); ++i)
223 begins[i] = paddings[i].first;
224 ends[i] = paddings[i].second;
226 ieLayer.getParameters()["pads_begin"] = begins;
227 ieLayer.getParameters()["pads_end"] = ends;
228 ieLayer.getParameters()["pad_mode"] = paddingType;
229 if (paddingType == "constant")
230 ieLayer.getParameters()["pad_value"] = paddingValue;
232 ieLayer.setInputPorts(std::vector<InferenceEngine::Port>(1));
233 ieLayer.setOutputPorts(std::vector<InferenceEngine::Port>(1));
234 return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
239 std::vector<std::pair<int, int> > paddings; // Pairs pad before, pad after.
240 std::vector<Range> dstRanges;
243 std::string paddingType;
246 Ptr<PaddingLayer> PaddingLayer::create(const LayerParams ¶ms)
248 return Ptr<PaddingLayer>(new PaddingLayerImpl(params));