54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
//
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// Created by DefTruth on 2021/4/4.
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//
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#include "vgg16_age.h"
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#include "lite/ort/core/ort_utils.h"
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using ortcv::VGG16Age;
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Ort::Value VGG16Age::transform(const cv::Mat &mat)
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{
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cv::Mat canvas;
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cv::resize(mat, canvas, cv::Size(input_node_dims.at(3),
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input_node_dims.at(2)));
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cv::cvtColor(canvas, canvas, cv::COLOR_BGR2RGB); // (1,3,224,224)
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return ortcv::utils::transform::create_tensor(
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canvas, input_node_dims, memory_info_handler,
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input_values_handler, ortcv::utils::transform::CHW);
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}
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void VGG16Age::detect(const cv::Mat &mat, types::Age &age)
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{
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// 1. make input tensor
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Ort::Value input_tensor = this->transform(mat);
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// 2. inference
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auto output_tensors = ort_session->Run(
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Ort::RunOptions{nullptr}, input_node_names.data(),
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&input_tensor, 1, output_node_names.data(), num_outputs
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);
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float pred_age = 0.f, top10_pred_prob = 0.f;
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Ort::Value &age_probs = output_tensors.at(0); // (1,101)
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auto age_dims = output_node_dims.at(0); // (1,101)
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const unsigned int num_intervals = age_dims.at(1); // 101
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std::vector<float> pred_probs(num_intervals);
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for (unsigned int i = 0; i < num_intervals; ++i)
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{
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float cur_prob = age_probs.At<float>({0, i});
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pred_age += cur_prob * static_cast<float>(i);
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pred_probs[i] = cur_prob;
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}
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std::sort(pred_probs.begin(), pred_probs.end(), std::greater<float>());
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for (unsigned int i = 0; i < 10; ++i) top10_pred_prob += pred_probs[i];
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const unsigned int interval_min = static_cast<int>(pred_age - 2.f > 0.f ? pred_age - 2.f : 0.f);
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const unsigned int interval_max = static_cast<int>(pred_age + 3.f < 100.f ? pred_age + 3.f : 100.f);
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age.age = pred_age;
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age.age_interval[0] = interval_min;
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age.age_interval[1] = interval_max;
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age.interval_prob = top10_pred_prob;
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age.flag = true;
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} |