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- // ------------------------- OpenPose C++ API Tutorial - Example 7 - XXXXXXXXXXXXX -------------------------
- // If the user wants to learn to use the OpenPose library, we highly recommend to start with the
- // examples in `examples/tutorial_api_cpp/`.
- // This example summarizes all the functionality of the OpenPose library:
- // 1. Read folder of images / video / webcam (`producer` module)
- // 2. Extract and render body keypoint / heatmap / PAF of that image (`pose` module)
- // 3. Extract and render face keypoint / heatmap / PAF of that image (`face` module)
- // 4. Save the results on disk (`filestream` module)
- // 5. Display the rendered pose (`gui` module)
- // Everything in a multi-thread scenario (`thread` module)
- // Points 2 to 5 are included in the `wrapper` module
- // In addition to the previous OpenPose modules, we also need to use:
- // 1. `core` module:
- // For the Array<float> class that the `pose` module needs
- // For the Datum struct that the `thread` module sends between the queues
- // 2. `utilities` module: for the error & logging functions, i.e., op::error & op::log respectively
- // This file should only be used for the user to take specific examples.
- // Command-line user intraface
- #define OPENPOSE_FLAGS_DISABLE_PRODUCER
- #include <openpose/flags.hpp>
- // OpenPose dependencies
- #include <openpose/headers.hpp>
- // Custom OpenPose flags
- // Producer
- DEFINE_string(image_dir, "examples/media/",
- "Process a directory of images. Read all standard formats (jpg, png, bmp, etc.).");
- // If the user needs his own variables, he can inherit the op::Datum struct and add them in there.
- // UserDatum can be directly used by the OpenPose wrapper because it inherits from op::Datum, just define
- // WrapperT<std::vector<UserDatum>> instead of Wrapper (or equivalently WrapperT<std::vector<UserDatum>>)
- struct UserDatum : public op::Datum
- {
- bool boolThatUserNeedsForSomeReason;
- UserDatum(const bool boolThatUserNeedsForSomeReason_ = false) :
- boolThatUserNeedsForSomeReason{boolThatUserNeedsForSomeReason_}
- {}
- };
- // The W-classes can be implemented either as a template or as simple classes given
- // that the user usually knows which kind of data he will move between the queues,
- // in this case we assume a std::shared_ptr of a std::vector of UserDatum
- // This worker will just read and return all the jpg files in a directory
- class WUserInput : public op::WorkerProducer<std::shared_ptr<std::vector<UserDatum>>>
- {
- public:
- WUserInput(const std::string& directoryPath) :
- mImageFiles{op::getFilesOnDirectory(directoryPath, "jpg")},
- // If we want "jpg" + "png" images
- // mImageFiles{op::getFilesOnDirectory(directoryPath, std::vector<std::string>{"jpg", "png"})},
- mCounter{0}
- {
- if (mImageFiles.empty())
- op::error("No images found on: " + directoryPath, __LINE__, __FUNCTION__, __FILE__);
- }
- void initializationOnThread() {}
- std::shared_ptr<std::vector<UserDatum>> workProducer()
- {
- try
- {
- // Close program when empty frame
- if (mImageFiles.size() <= mCounter)
- {
- op::log("Last frame read and added to queue. Closing program after it is processed.",
- op::Priority::High);
- // This funtion stops this worker, which will eventually stop the whole thread system once all the
- // frames have been processed
- this->stop();
- return nullptr;
- }
- else
- {
- // Create new datum
- auto datumsPtr = std::make_shared<std::vector<UserDatum>>();
- datumsPtr->emplace_back();
- auto& datum = datumsPtr->at(0);
- // Fill datum
- datum.cvInputData = cv::imread(mImageFiles.at(mCounter++));
- // If empty frame -> return nullptr
- if (datum.cvInputData.empty())
- {
- op::log("Empty frame detected on path: " + mImageFiles.at(mCounter-1) + ". Closing program.",
- op::Priority::High);
- this->stop();
- datumsPtr = nullptr;
- }
- return datumsPtr;
- }
- }
- catch (const std::exception& e)
- {
- this->stop();
- op::error(e.what(), __LINE__, __FUNCTION__, __FILE__);
- return nullptr;
- }
- }
- private:
- const std::vector<std::string> mImageFiles;
- unsigned long long mCounter;
- };
- int main(int argc, char *argv[])
- {
- // Parsing command line flags
- gflags::ParseCommandLineFlags(&argc, &argv, true);
- try
- {
- op::log("Starting OpenPose demo...", op::Priority::High);
- const auto timerBegin = std::chrono::high_resolution_clock::now();
- // logging_level
- op::check(0 <= FLAGS_logging_level && FLAGS_logging_level <= 255, "Wrong logging_level value.",
- __LINE__, __FUNCTION__, __FILE__);
- op::ConfigureLog::setPriorityThreshold((op::Priority)FLAGS_logging_level);
- op::Profiler::setDefaultX(FLAGS_profile_speed);
- // // For debugging
- // // Print all logging messages
- // op::ConfigureLog::setPriorityThreshold(op::Priority::None);
- // // Print out speed values faster
- // op::Profiler::setDefaultX(100);
- // Applying user defined configuration - GFlags to program variables
- // outputSize
- const auto outputSize = op::flagsToPoint(FLAGS_output_resolution, "-1x-1");
- // netInputSize
- const auto netInputSize = op::flagsToPoint(FLAGS_net_resolution, "-1x368");
- // faceNetInputSize
- const auto faceNetInputSize = op::flagsToPoint(FLAGS_face_net_resolution, "368x368 (multiples of 16)");
- // handNetInputSize
- const auto handNetInputSize = op::flagsToPoint(FLAGS_hand_net_resolution, "368x368 (multiples of 16)");
- // poseModel
- const auto poseModel = op::flagsToPoseModel(FLAGS_model_pose);
- // JSON saving
- if (!FLAGS_write_keypoint.empty())
- op::log("Flag `write_keypoint` is deprecated and will eventually be removed."
- " Please, use `write_json` instead.", op::Priority::Max);
- // keypointScale
- const auto keypointScale = op::flagsToScaleMode(FLAGS_keypoint_scale);
- // heatmaps to add
- const auto heatMapTypes = op::flagsToHeatMaps(FLAGS_heatmaps_add_parts, FLAGS_heatmaps_add_bkg,
- FLAGS_heatmaps_add_PAFs);
- const auto heatMapScale = op::flagsToHeatMapScaleMode(FLAGS_heatmaps_scale);
- // >1 camera view?
- // const auto multipleView = (FLAGS_3d || FLAGS_3d_views > 1 || FLAGS_flir_camera);
- const auto multipleView = false;
- // Enabling Google Logging
- const bool enableGoogleLogging = true;
- // OpenPose wrapper
- op::log("Configuring OpenPose...", op::Priority::High);
- op::WrapperT<std::vector<UserDatum>> opWrapperT;
- // Initializing the user custom classes
- // Frames producer (e.g., video, webcam, ...)
- auto wUserInput = std::make_shared<WUserInput>(FLAGS_image_dir);
- // Add custom processing
- const auto workerInputOnNewThread = true;
- opWrapperT.setWorker(op::WorkerType::Input, wUserInput, workerInputOnNewThread);
- // Pose configuration (use WrapperStructPose{} for default and recommended configuration)
- const op::WrapperStructPose wrapperStructPose{
- !FLAGS_body_disable, netInputSize, outputSize, keypointScale, FLAGS_num_gpu, FLAGS_num_gpu_start,
- FLAGS_scale_number, (float)FLAGS_scale_gap, op::flagsToRenderMode(FLAGS_render_pose, multipleView),
- poseModel, !FLAGS_disable_blending, (float)FLAGS_alpha_pose, (float)FLAGS_alpha_heatmap,
- FLAGS_part_to_show, FLAGS_model_folder, heatMapTypes, heatMapScale, FLAGS_part_candidates,
- (float)FLAGS_render_threshold, FLAGS_number_people_max, FLAGS_maximize_positives, FLAGS_fps_max,
- enableGoogleLogging};
- opWrapperT.configure(wrapperStructPose);
- // Face configuration (use op::WrapperStructFace{} to disable it)
- const op::WrapperStructFace wrapperStructFace{
- FLAGS_face, faceNetInputSize, op::flagsToRenderMode(FLAGS_face_render, multipleView, FLAGS_render_pose),
- (float)FLAGS_face_alpha_pose, (float)FLAGS_face_alpha_heatmap, (float)FLAGS_face_render_threshold};
- opWrapperT.configure(wrapperStructFace);
- // Hand configuration (use op::WrapperStructHand{} to disable it)
- const op::WrapperStructHand wrapperStructHand{
- FLAGS_hand, handNetInputSize, FLAGS_hand_scale_number, (float)FLAGS_hand_scale_range, FLAGS_hand_tracking,
- op::flagsToRenderMode(FLAGS_hand_render, multipleView, FLAGS_render_pose), (float)FLAGS_hand_alpha_pose,
- (float)FLAGS_hand_alpha_heatmap, (float)FLAGS_hand_render_threshold};
- opWrapperT.configure(wrapperStructHand);
- // Extra functionality configuration (use op::WrapperStructExtra{} to disable it)
- const op::WrapperStructExtra wrapperStructExtra{
- FLAGS_3d, FLAGS_3d_min_views, FLAGS_identification, FLAGS_tracking, FLAGS_ik_threads};
- opWrapperT.configure(wrapperStructExtra);
- // Output (comment or use default argument to disable any output)
- const op::WrapperStructOutput wrapperStructOutput{
- FLAGS_cli_verbose, FLAGS_write_keypoint, op::stringToDataFormat(FLAGS_write_keypoint_format),
- FLAGS_write_json, FLAGS_write_coco_json, FLAGS_write_coco_foot_json, FLAGS_write_coco_json_variant,
- FLAGS_write_images, FLAGS_write_images_format, FLAGS_write_video, FLAGS_write_video_fps,
- FLAGS_write_heatmaps, FLAGS_write_heatmaps_format, FLAGS_write_video_3d, FLAGS_write_video_adam,
- FLAGS_write_bvh, FLAGS_udp_host, FLAGS_udp_port};
- opWrapperT.configure(wrapperStructOutput);
- // GUI (comment or use default argument to disable any visual output)
- const op::WrapperStructGui wrapperStructGui{
- op::flagsToDisplayMode(FLAGS_display, FLAGS_3d), !FLAGS_no_gui_verbose, FLAGS_fullscreen};
- opWrapperT.configure(wrapperStructGui);
- // Set to single-thread (for sequential processing and/or debugging and/or reducing latency)
- opWrapperT.disableMultiThreading();
- // Start, run, and stop processing - exec() blocks this thread until OpenPose wrapper has finished
- op::log("Starting thread(s)...", op::Priority::High);
- opWrapperT.exec();
- // Measuring total time
- const auto now = std::chrono::high_resolution_clock::now();
- const auto totalTimeSec = (double)std::chrono::duration_cast<std::chrono::nanoseconds>(now-timerBegin).count()
- * 1e-9;
- const auto message = "OpenPose demo successfully finished. Total time: "
- + std::to_string(totalTimeSec) + " seconds.";
- op::log(message, op::Priority::High);
- // Return successful message
- return 0;
- }
- catch (const std::exception& e)
- {
- return -1;
- }
- }
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