private async void UpdateResults(ImageAnalyzer img)
{
this.searchErrorTextBlock.Visibility = Visibility.Collapsed;
Microsoft.Azure.CognitiveServices.Vision.CustomVision.Prediction.Models.ImagePrediction result = null;
var currentProjectViewModel = (ProjectViewModel)this.projectsComboBox.SelectedValue;
var currentProject = ((ProjectViewModel)this.projectsComboBox.SelectedValue).Model;
var trainingApi = this.userProvidedTrainingApi;
var predictionApi = this.userProvidedPredictionApi;
try
{
var iteractions = await trainingApi.GetIterationsAsync(currentProject.Id);
var latestTrainedIteraction = iteractions.Where(i => i.Status == "Completed").OrderByDescending(i => i.TrainedAt.Value).FirstOrDefault();
if (latestTrainedIteraction == null)
{
throw new Exception("This project doesn't have any trained models yet. Please train it, or wait until training completes if one is in progress.");
}
if (img.ImageUrl != null)
{
result = await CustomVisionServiceHelper.PredictImageUrlWithRetryAsync(predictionApi, currentProject.Id, new Microsoft.Azure.CognitiveServices.Vision.CustomVision.Prediction.Models.ImageUrl(img.ImageUrl), latestTrainedIteraction.Id);
}
else
{
result = await CustomVisionServiceHelper.PredictImageWithRetryAsync(predictionApi, currentProject.Id, img.GetImageStreamCallback, latestTrainedIteraction.Id);
}
}
catch (Exception ex)
{
await Util.GenericApiCallExceptionHandler(ex, "Error");
}
this.progressRing.IsActive = false;
this.resultsDetails.Visibility = Visibility.Visible;
var matches = result?.Predictions?.Where(r => Math.Round(r.Probability * 100) > 0);
if (matches == null || !matches.Any())
{
this.searchErrorTextBlock.Visibility = Visibility.Visible;
}
else
{
this.resultsGridView.ItemsSource = matches.Select(t => new { Tag = t.TagName, Probability = string.Format("{0}%", Math.Round(t.Probability * 100)) });
}
if (result?.Predictions != null)
{
this.activeLearningButton.Opacity = 1;
this.PredictionDataForRetraining.Clear();
this.PredictionDataForRetraining.AddRange(result.Predictions.Select(
t => new ActiveLearningTagViewModel
{
PredictionResultId = result.Id,
TagId = t.TagId,
TagName = t.TagName,
HasTag = Math.Round(t.Probability * 100) > 0
}));
}
else
{
this.activeLearningButton.Opacity = 0;
}
}
public Result GetClothingPrediction(string predictionImagePath)
{
PredictionEndpoint endpoint = new PredictionEndpoint()
{
ApiKey = ClothingModelPredictionKey
};
MemoryStream predictionImage = new MemoryStream(File.ReadAllBytes(predictionImagePath));
Microsoft.Azure.CognitiveServices.Vision.CustomVision.Prediction.Models.ImagePrediction predictionResult = endpoint.PredictImage(ClothingModelProjectID, predictionImage);
Result result = new Result
{
// First result in list is highest probability
Name = predictionResult.Predictions[0].TagName,
Probability = predictionResult.Predictions[0].Probability.ToString()
};
return(result);
}
public Result GetClassification(string predictionImagePath)
{
PredictionEndpoint endpoint = new PredictionEndpoint()
{
ApiKey = ClassifierModelPredictionKey
};
MemoryStream predictionImage = new MemoryStream(File.ReadAllBytes(predictionImagePath));
Microsoft.Azure.CognitiveServices.Vision.CustomVision.Prediction.Models.ImagePrediction predictionResult = endpoint.PredictImage(ClassifierModelProjectID, predictionImage);
Result result = new Result
{
// First result in list is highest probability
Name = predictionResult.Predictions[0].TagName,
Probability = predictionResult.Predictions[0].Probability.ToString()
};
if (result.Name.Equals("Barcode"))
{
result.Classification = Classifiers.Barcode;
}
else if (result.Name.Equals("Book"))
{
result.Classification = Classifiers.Book;
}
else if (result.Name.Equals("Clothing"))
{
result.Classification = Classifiers.Clothing;
}
else
{
result.Classification = Classifiers.Other;
}
return(result);
}
private async void UpdateResults(ImageAnalyzer img)
{
Microsoft.Azure.CognitiveServices.Vision.CustomVision.Prediction.Models.ImagePrediction result = null;
var currentProjectViewModel = (ProjectViewModel)this.projectsComboBox.SelectedValue;
var currentProject = ((ProjectViewModel)this.projectsComboBox.SelectedValue).Model;
var trainingApi = this.userProvidedTrainingApi;
var predictionApi = this.userProvidedPredictionApi;
try
{
var iteractions = await trainingApi.GetIterationsAsync(currentProject.Id);
var latestTrainedIteraction = iteractions.Where(i => i.Status == "Completed").OrderByDescending(i => i.TrainedAt.Value).FirstOrDefault();
if (latestTrainedIteraction == null)
{
throw new Exception("This project doesn't have any trained models yet. Please train it, or wait until training completes if one is in progress.");
}
if (img.ImageUrl != null)
{
result = await CustomVisionServiceHelper.PredictImageUrlWithRetryAsync(predictionApi, currentProject.Id, new Microsoft.Azure.CognitiveServices.Vision.CustomVision.Prediction.Models.ImageUrl(img.ImageUrl), latestTrainedIteraction.Id);
}
else
{
result = await CustomVisionServiceHelper.PredictImageWithRetryAsync(predictionApi, currentProject.Id, img.GetImageStreamCallback, latestTrainedIteraction.Id);
}
}
catch (Exception ex)
{
await Util.GenericApiCallExceptionHandler(ex, "Error");
}
this.progressRing.IsActive = false;
var matches = result?.Predictions?.Where(r => Math.Round(r.Probability * 100) > 0);
if (!currentProjectViewModel.IsObjectDetection)
{
//show image classification matches
OverlayPresenter.MatchInfo = new MatchOverlayInfo(matches);
}
else
{
//show detected objects
OverlayPresenter.ObjectInfo = matches.Where(m => m.Probability >= 0.6).Select(i => new PredictedObjectOverlayInfo(i)).ToList();
}
if (result?.Predictions != null && !currentProjectViewModel.IsObjectDetection)
{
this.activeLearningButton.Opacity = 1;
this.PredictionDataForRetraining.Clear();
this.PredictionDataForRetraining.AddRange(result.Predictions.Select(t => new ActiveLearningTagViewModel
{
PredictionResultId = result.Id,
TagId = t.TagId,
TagName = t.TagName,
HasTag = Math.Round(t.Probability * 100) > 0
}));
}
else
{
this.activeLearningButton.Opacity = 0;
}
}
