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43 #include "../precomp.hpp"
44 #include "layers_common.hpp"
51 class CropLayerImpl : public CropLayer
54 CropLayerImpl(const LayerParams& params)
56 setParamsFrom(params);
57 startAxis = params.get<int>("axis", 2);
58 const DictValue *paramOffset = params.ptr("offset");
62 for (int i = 0; i < paramOffset->size(); i++)
63 offset.push_back(paramOffset->get<int>(i));
67 bool getMemoryShapes(const std::vector<MatShape> &inputs,
68 const int requiredOutputs,
69 std::vector<MatShape> &outputs,
70 std::vector<MatShape> &internals) const
72 CV_Assert(inputs.size() == 2);
74 MatShape dstShape = inputs[0];
75 int start = clamp(startAxis, dstShape);
76 for (int i = start; i < dstShape.size(); i++)
78 dstShape[i] = inputs[1][i];
81 outputs.resize(1, dstShape);
86 void finalize(const std::vector<Mat *> &inputs, std::vector<Mat> &outputs)
88 CV_Assert(2 == inputs.size());
90 const Mat &inpBlob = *inputs[0];
91 const Mat &inpSzBlob = *inputs[1];
93 int dims = inpBlob.dims;
94 int start_axis = clamp(startAxis, dims);
96 std::vector<int> offset_final(dims, 0);
97 if (offset.size() == 1)
99 for (int i = start_axis; i < dims; i++)
100 offset_final[i] = offset[0];
102 else if (offset.size() > 1)
104 if ((int)offset.size() != dims - start_axis)
105 CV_Error(Error::StsBadArg, "number of offset values specified must be "
106 "equal to the number of dimensions following axis.");
108 for (int i = start_axis; i < dims; i++)
109 offset_final[i] = offset[i - start_axis];
112 crop_ranges.resize(dims, Range::all());
113 for (int i = start_axis; i < dims; i++)
115 if (offset_final[i] < 0 || offset_final[i] + inpSzBlob.size[i] > inpBlob.size[i])
116 CV_Error(Error::StsBadArg, "invalid crop parameters or blob sizes");
118 crop_ranges[i] = Range(offset_final[i], offset_final[i] + inpSzBlob.size[i]);
122 void forward(InputArrayOfArrays inputs_arr, OutputArrayOfArrays outputs_arr, OutputArrayOfArrays internals_arr)
125 CV_TRACE_ARG_VALUE(name, "name", name.c_str());
127 Layer::forward_fallback(inputs_arr, outputs_arr, internals_arr);
130 void forward(std::vector<Mat *> &inputs, std::vector<Mat> &outputs, std::vector<Mat> &internals)
133 CV_TRACE_ARG_VALUE(name, "name", name.c_str());
135 Mat &input = *inputs[0];
136 Mat &output = outputs[0];
138 input(&crop_ranges[0]).copyTo(output);
141 std::vector<Range> crop_ranges;
145 Ptr<CropLayer> CropLayer::create(const LayerParams& params)
147 return Ptr<CropLayer>(new CropLayerImpl(params));