mirror of
https://github.com/PaddlePaddle/FastDeploy.git
synced 2026-04-24 01:29:57 +08:00
jiangjiajun
102 lines
4.0 KiB
C++
102 lines
4.0 KiB
C++
// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "fastdeploy/fastdeploy_model.h"
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#include "fastdeploy/vision/common/processors/transform.h"
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#include "fastdeploy/vision/common/result.h"
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namespace fastdeploy {
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namespace vision {
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namespace detection {
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class FASTDEPLOY_DECL NanoDetPlus : public FastDeployModel {
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public:
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// 当model_format为ONNX时，无需指定params_file
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// 当model_format为Paddle时，则需同时指定model_file & params_file
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NanoDetPlus(const std::string& model_file,
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const std::string& params_file = "",
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const RuntimeOption& custom_option = RuntimeOption(),
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const Frontend& model_format = Frontend::ONNX);
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// 定义模型的名称
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std::string ModelName() const { return "nanodet"; }
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// 模型预测接口，即用户调用的接口
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// im 为用户的输入数据，目前对于CV均定义为cv::Mat
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// result 为模型预测的输出结构体
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// conf_threshold 为后处理的参数
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// nms_iou_threshold 为后处理的参数
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virtual bool Predict(cv::Mat* im, DetectionResult* result,
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float conf_threshold = 0.35f,
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float nms_iou_threshold = 0.5f);
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// 以下为模型在预测时的一些参数，基本是前后处理所需
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// 用户在创建模型后，可根据模型的要求，以及自己的需求
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// 对参数进行修改
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// tuple of input size (width, height), e.g (320, 320)
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std::vector<int> size;
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// padding value, size should be same with Channels
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std::vector<float> padding_value;
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// keep aspect ratio or not when perform resize operation.
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// This option is set as `false` by default in NanoDet-Plus.
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bool keep_ratio;
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// downsample strides for NanoDet-Plus to generate anchors, will
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// take (8, 16, 32, 64) as default values.
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std::vector<int> downsample_strides;
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// for offseting the boxes by classes when using NMS, default 4096.
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float max_wh;
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// reg_max for GFL regression, default 7
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int reg_max;
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private:
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// 初始化函数，包括初始化后端，以及其它模型推理需要涉及的操作
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bool Initialize();
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// 输入图像预处理操作
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// Mat为FastDeploy定义的数据结构
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// FDTensor为预处理后的Tensor数据，传给后端进行推理
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// im_info为预处理过程保存的数据，在后处理中需要用到
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bool Preprocess(Mat* mat, FDTensor* output,
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std::map<std::string, std::array<float, 2>>* im_info);
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// 后端推理结果后处理，输出给用户
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// infer_result 为后端推理后的输出Tensor
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// result 为模型预测的结果
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// im_info 为预处理记录的信息，后处理用于还原box
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// conf_threshold 后处理时过滤box的置信度阈值
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// nms_iou_threshold 后处理时NMS设定的iou阈值
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bool Postprocess(FDTensor& infer_result, DetectionResult* result,
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const std::map<std::string, std::array<float, 2>>& im_info,
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float conf_threshold, float nms_iou_threshold);
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// 查看输入是否为动态维度的 不建议直接使用 不同模型的逻辑可能不一致
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bool IsDynamicInput() const { return is_dynamic_input_; }
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// whether to inference with dynamic shape (e.g ONNX export with dynamic shape
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// or not.)
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// RangiLyu/nanodet official 'export_onnx.py' script will export static ONNX
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// by default.
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// This value will auto check by fastdeploy after the internal Runtime
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// initialized.
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bool is_dynamic_input_;
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};
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} // namespace detection
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} // namespace vision
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} // namespace fastdeploy
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