private async Task <ImageInsights> AnalyzeImage(string imageLocalPath)
{
var fileName = Path.GetFileName(imageLocalPath);
List <VisualFeature> features = new List <VisualFeature>()
{
VisualFeature.Categories, VisualFeature.Description, VisualFeature.Tags
};
try
{
VisionServiceHelper.ApiKey = ConfigurationManager.AppSettings["ComputerVisionKey"];
VisionServiceHelper.EndPoint = ConfigurationManager.AppSettings["ComputerVisionEndPoint"];
var resized = ImageResizer.ResizeIfRequired(imageLocalPath, 750);
Func <Task <Stream> > imageCB = async() => System.IO.File.OpenRead(resized.Item2);
var imageAnalysisResult = await VisionServiceHelper.AnalyzeImageAsync(imageCB, features);
ImageInsights insights = new ImageInsights
{
ImageId = fileName,
Caption = imageAnalysisResult.Description.Captions[0].Text,
Tags = imageAnalysisResult.Tags.Select(t => t.Name).ToArray(),
Categories = imageAnalysisResult.Categories.Where(t => t.Score > 0.60).Select(t => t.Name).ToArray()
};
return(insights);
}
catch (Exception ex)
{
return(null);
}
}
private async Task <ImageMetadata> SaveData(AnalysisResultViewModel data)
{
var fileName = Path.GetFileName(data.ImageLocalPath);
Func <Task <Stream> > imageCB;
try
{
if (blobStorage == null || cosmosDb == null)
{
BlobStorageHelper.ContainerName = ConfigurationManager.AppSettings["ContainerName"];
BlobStorageHelper.ConnectionString = ConfigurationManager.AppSettings["StorageConnectionString"];
blobStorage = await BlobStorageHelper.BuildAsync();
CosmosDBHelper.AccessKey = ConfigurationManager.AppSettings["CosmosDBKey"];
CosmosDBHelper.EndpointUri = ConfigurationManager.AppSettings["CosmosDBEndpointURI"];
CosmosDBHelper.DatabaseName = ConfigurationManager.AppSettings["DatabaseName"];
CosmosDBHelper.CollectionName = ConfigurationManager.AppSettings["CollectionName"];
cosmosDb = await CosmosDBHelper.BuildAsync();
}
var existing = await cosmosDb.FindDocumentByIdAsync <ImageMetadata>(fileName);
var resized = ImageResizer.ResizeIfRequired(Server.MapPath(data.ImageLocalPath), 750);
imageCB = async() => System.IO.File.OpenRead(resized.Item2);
var imageBlob = await blobStorage.UploadImageAsync(imageCB, fileName);
var metadata = new ImageMetadata(data.ImageLocalPath);
metadata.AddInsights(data.Insights);
metadata.BlobUri = imageBlob.Uri;
metadata.TaggedBy = User.Identity.Name;
if (existing == null)
{
metadata = (await cosmosDb.CreateDocumentIfNotExistsAsync(metadata, metadata.Id)).Item2;
}
else
{
metadata = await cosmosDb.UpdateDocumentAsync(metadata, metadata.Id);
}
return(metadata);
}
catch (Exception ex)
{
return(null);
}
}