public async Task <JsonResult> Predict(string imageData)
{
try
{
if (!string.IsNullOrWhiteSpace(imageData))
{
var imageClient = new VisionServiceClient(AppSettings.ImageService_ApiKey, AppSettings.ImageService_ApiEndpoint, AppSettings.ImageService_ProjectId, AppSettings.ImageService_ModelName);
var imgd = imageData.Replace("data:image/png;base64,", string.Empty);
byte[] bytes = Convert.FromBase64String(imgd);
using (MemoryStream ms = new MemoryStream(bytes))
{
var predictionResult = await imageClient.PredictImage(ms);
//Select into DTO so each probability can be rounded
var newResults = predictionResult.Predictions.Select(n =>
new AzureDraw.DTO.PredictionModel {
TagName = n.TagName, Probability = n.Probability
});
foreach (var item in newResults)
{
item.Probability = Math.Round(item.Probability, 6);
}
var topResult = newResults.OrderByDescending(p => Math.Round(p.Probability, 6)).First();
return(Json(topResult));
}
}
else
{
return(Json(string.Empty));
}
}
catch (Exception ex)
{
Response.StatusCode = (int)HttpStatusCode.InternalServerError;
return(Json("Error"));
}
}