leleamol commented on a change in pull request #13294: [MXNET-1083] Add the example to demonstrate the inference workflow using C++ API URL: https://github.com/apache/incubator-mxnet/pull/13294#discussion_r237597618
########## File path: cpp-package/example/inference/inception_inference.cpp ########## @@ -0,0 +1,414 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/* + * This example demonstrates image classification workflow with pre-trained models using MXNet C++ API. + * The example performs following tasks. + * 1. Load the pre-trained model, + * 2. Load the parameters of pre-trained model, + * 3. Load the image to be classified in to NDArray. + * 4. Normalize the image using the mean of images that were used for training. + * 5. Run the forward pass and predict the input image. + */ + +#include <sys/stat.h> +#include <iostream> +#include <fstream> +#include <map> +#include <string> +#include <vector> +#include "mxnet-cpp/MxNetCpp.h" +#include <opencv2/opencv.hpp> +using namespace std; +using namespace mxnet::cpp; + + +/* + * class Predictor + * + * This class encapsulates the functionality to load the model, process input image and run the forward pass. + */ + +class Predictor { + public: + Predictor() {} + Predictor(const std::string& model_json, + const std::string& model_params, + const Shape& input_shape, + bool gpu_context_type = false, + const std::string& synset_file = "", + const std::string& mean_image_file = ""); + void PredictImage(const std::string& image_file); + ~Predictor(); + + private: + void LoadModel(const std::string& model_json_file); + void LoadParameters(const std::string& model_parameters_file); + void LoadSynset(const std::string& synset_file); + NDArray LoadInputImage(const std::string& image_file); + void LoadMeanImageData(); + void NormalizeInput(const std::string& mean_image_file); + inline bool FileExists(const std::string& name) { + struct stat buffer; + return (stat(name.c_str(), &buffer) == 0); + } + NDArray mean_img; + map<string, NDArray> args_map; Review comment: Fixed. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
