proposal.hpp

// Copyright (C) 2018-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//
 
#pragma once
 
#include "ngraph/op/op.hpp"
 
namespace ngraph
{
    namespace op
    {
        // base_size       Anchor sizes
        // pre_nms_topn    Number of boxes before nms
        // post_nms_topn   Number of boxes after nms
        // nms_thresh      Threshold for nms
        // feat_stride     Feature stride
        // min_size        Minimum box size
        // ratio   Ratios for anchor generation
        // scale   Scales for anchor generation
        // clip_before_nms Clip before NMs
        // clip_after_nms  Clip after NMs
        // normalize       Normalize boxes to [0,1]
        // box_size_scale  Scale factor for scaling box size
        // box_coordinate_scale Scale factor for scaling box coordiate
        // framework            Calculation frameworkrithm to use
        struct ProposalAttrs
        {
            size_t base_size;
            size_t pre_nms_topn;
            size_t post_nms_topn;
            float nms_thresh = 0.0f;
            size_t feat_stride = 1;
            size_t min_size = 1;
            std::vector<float> ratio;
            std::vector<float> scale;
            bool clip_before_nms = true;
            bool clip_after_nms = false;
            bool normalize = false;
            float box_size_scale = 1.0f;
            float box_coordinate_scale = 1.0f;
            std::string framework;
            bool infer_probs = false;
        };
 
        namespace v0
        {
            class NGRAPH_API Proposal : public Op
            {
            public:
                NGRAPH_RTTI_DECLARATION;
                Proposal() = default;
                /// \brief Constructs a Proposal operation
                ///
                /// \param class_probs     Class probability scores
                /// \param bbox_deltas     Prediction of bounding box deltas
                /// \param image_shape     Shape of image
                /// \param attrs           Proposal op attributes
                Proposal(const Output<Node>& class_probs,
                         const Output<Node>& bbox_deltas,
                         const Output<Node>& image_shape,
                         const ProposalAttrs& attrs);
 
                void validate_and_infer_types() override;
                virtual std::shared_ptr<Node>
                    clone_with_new_inputs(const OutputVector& new_args) const override;
                const ProposalAttrs& get_attrs() const { return m_attrs; }
                virtual bool visit_attributes(AttributeVisitor& visitor) override;
 
            protected:
                ProposalAttrs m_attrs;
            };
        } // namespace v0
 
        namespace v4
        {
            class NGRAPH_API Proposal : public op::v0::Proposal
            {
            public:
                NGRAPH_RTTI_DECLARATION;
                Proposal() = default;
                /// \brief Constructs a Proposal operation
                ///
                /// \param class_probs     Class probability scores
                /// \param bbox_deltas     Prediction of bounding box deltas
                /// \param image_shape     Shape of image
                /// \param attrs           Proposal op attributes
                Proposal(const Output<Node>& class_probs,
                         const Output<Node>& bbox_deltas,
                         const Output<Node>& image_shape,
                         const ProposalAttrs& attrs);
 
                void validate_and_infer_types() override;
                virtual std::shared_ptr<Node>
                    clone_with_new_inputs(const OutputVector& new_args) const override;
                const ProposalAttrs& get_attrs() const { return m_attrs; }
            };
        } // namespace v4
 
        using v0::Proposal;
    } // namespace op
} // namespace ngraph