private static int TutorialDeveloperPose2()
{
try
{
OpenPose.Log("Starting OpenPose demo...", Priority.High);
var timeBegin = new Stopwatch();
timeBegin.Start();
// ------------------------- INITIALIZATION -------------------------
// Step 1 - Set logging level
// - 0 will output all the logging messages
// - 255 will output nothing
OpenPose.Check(0 <= Flags.LoggingLevel && Flags.LoggingLevel <= 255, "Wrong logging_level value.");
ConfigureLog.PriorityThreshold = (Priority)Flags.LoggingLevel;
OpenPose.Log("", Priority.Low);
// Step 2 - Read GFlags (user defined configuration)
// outputSize
var outputSize = OpenPose.FlagsToPoint(Flags.OutputResolution, "-1x-1");
// netInputSize
var netInputSize = OpenPose.FlagsToPoint(Flags.NetResolution, "-1x368");
// poseModel
var poseModel = OpenPose.FlagsToPoseModel(Flags.ModelPose);
// Check no contradictory flags enabled
if (Flags.AlphaPose < 0.0 || Flags.AlphaPose > 1.0)
{
OpenPose.Error("Alpha value for blending must be in the range [0,1].", -1, nameof(TutorialDeveloperPose2));
}
if (Flags.ScaleGap <= 0.0 && Flags.ScaleNumber > 1)
{
OpenPose.Error("Incompatible flag configuration: scale_gap must be greater than 0 or scale_number = 1.", -1, nameof(TutorialDeveloperPose2));
}
// Step 3 - Initialize all required classes
using (var scaleAndSizeExtractor = new ScaleAndSizeExtractor(netInputSize, outputSize, Flags.ScaleNumber, Flags.ScaleGap))
using (var cvMatToOpInput = new CvMatToOpInput(poseModel))
using (var cvMatToOpOutput = new CvMatToOpOutput())
using (var poseExtractorPtr = new StdSharedPtr <PoseExtractorCaffe>(new PoseExtractorCaffe(poseModel, Flags.ModelFolder, Flags.NumGpuStart)))
using (var poseGpuRenderer = new PoseGpuRenderer(poseModel, poseExtractorPtr, (float)Flags.RenderThreshold, !Flags.DisableBlending, (float)Flags.AlphaPose))
{
poseGpuRenderer.SetElementToRender(Flags.PartToShow);
using (var opOutputToCvMat = new OpOutputToCvMat())
using (var frameDisplayer = new FrameDisplayer("OpenPose Tutorial - Example 2", outputSize))
{
// Step 4 - Initialize resources on desired thread (in this case single thread, i.e., we init resources here)
poseExtractorPtr.Get().InitializationOnThread();
poseGpuRenderer.InitializationOnThread();
// ------------------------- POSE ESTIMATION AND RENDERING -------------------------
// Step 1 - Read and load image, error if empty (possibly wrong path)
// Alternative: cv::imread(Flags.image_path, CV_LOAD_IMAGE_COLOR);
using (var inputImage = OpenPose.LoadImage(ImagePath, LoadImageFlag.LoadImageColor))
{
if (inputImage.Empty)
{
OpenPose.Error("Could not open or find the image: " + ImagePath, -1, nameof(TutorialDeveloperPose2));
}
var imageSize = new Point <int>(inputImage.Cols, inputImage.Rows);
// Step 2 - Get desired scale sizes
var tuple = scaleAndSizeExtractor.Extract(imageSize);
var scaleInputToNetInputs = tuple.Item1;
var netInputSizes = tuple.Item2;
var scaleInputToOutput = tuple.Item3;
var outputResolution = tuple.Item4;
// Step 3 - Format input image to OpenPose input and output formats
var netInputArray = cvMatToOpInput.CreateArray(inputImage, scaleInputToNetInputs, netInputSizes);
var outputArray = cvMatToOpOutput.CreateArray(inputImage, scaleInputToOutput, outputResolution);
// Step 4 - Estimate poseKeypoints
poseExtractorPtr.Get().ForwardPass(netInputArray, imageSize, scaleInputToNetInputs);
var poseKeypoints = poseExtractorPtr.Get().GetPoseKeyPoints();
var scaleNetToOutput = poseExtractorPtr.Get().GetScaleNetToOutput();
// Step 5 - Render pose
poseGpuRenderer.RenderPose(outputArray, poseKeypoints, (float)scaleInputToOutput, scaleNetToOutput);
// Step 6 - OpenPose output format to cv::Mat
using (var outputImage = opOutputToCvMat.FormatToCvMat(outputArray))
{
// ------------------------- SHOWING RESULT AND CLOSING -------------------------
// Show results
frameDisplayer.DisplayFrame(outputImage, 0); // Alternative: cv::imshow(outputImage) + cv::waitKey(0)
// Measuring total time
timeBegin.Stop();
var totalTimeSec = timeBegin.ElapsedMilliseconds / 1000d;
var message = $"OpenPose demo successfully finished. Total time: {totalTimeSec} seconds.";
OpenPose.Log(message, Priority.High);
// Return successful message
return(0);
}
}
}
}
}
catch (Exception e)
{
OpenPose.Error(e.Message, -1, nameof(TutorialDeveloperPose2));
return(-1);
}
}