public async virtual Task MessageReceivedAsync(IDialogContext context, IAwaitable <IMessageActivity> result)
{
try
{
await context.PostAsync($"Analysing the image, please wait ...");
// get the attchment
var message = await result;
var attachment = message.Attachments[0];
// get the image uploaded
var bytes = await GetImage(context, message);
// analyse the image using cognitive vision api
ImageAnalyzer image = new ImageAnalyzer(bytes);
image.ShowDialogOnFaceApiErrors = true;
await image.AnalyzeImageAsync(true);
// detect faces and text from the image
await image.DetectFacesAsync(true, true);
await image.IdentifyFacesAsync();
await image.RecognizeTextAsync();
// get the results object
Models.ImageAnalysisResults results = new Models.ImageAnalysisResults(image);
if (image.AnalysisResult != null && image.AnalysisResult.Description != null && image.AnalysisResult.Description.Captions.Length > 0)
{
// store this card so we can use the intent dialog to get more information if needed
// context.ConversationData.SetValue<Models.ImageAnalysisResults>("imageanalysed", results);
// display the results
var card = context.MakeMessage();
card.Text = results.Description;
await DisplayImageFacts(card, results);
await context.PostAsync(card);
}
else
{
await context.PostAsync($"I'm sorry but I didn't understand the image. It's a bit embarrasing");
}
}
catch (Exception ex)
{
await context.PostAsync($"Oops, somethign went wrong: " + ex.Message);
}
context.Wait(this.MessageReceivedAsync);
}
/// <summary>
/// returns a thumbnail card for displaying the reults of the image analysis
/// </summary>
/// <returns></returns>
private async Task DisplayImageFacts(IMessageActivity message, Models.ImageAnalysisResults image)
{
var img = image.Image;
// create a new adaptive card
var card = new AdaptiveCards.AdaptiveCard();
// add a title
card.Body.Add(new AdaptiveCards.AdaptiveTextBlock("Facts about the image:"));
// create a container for each of the sections
var container = new AdaptiveCards.AdaptiveContainer();
container.Separator = true;
card.Body.Add(container);
#region Tags
// create the fact set for the tags
var tags = new AdaptiveCards.AdaptiveFactSet();
// create facts for tags
if (img.AnalysisResult.Tags == null || !img.AnalysisResult.Tags.Any())
{
tags.Facts.Add(new AdaptiveCards.AdaptiveFact("Tags: ", "no tags"));
}
else
{
var list = img.AnalysisResult.Tags.Select(t => new { Confidence = string.Format("{0}%", Math.Round(t.Confidence * 100)), Name = t.Name });
foreach (var tag in list)
{
tags.Facts.Add(new AdaptiveCards.AdaptiveFact(tag.Name, tag.Confidence.ToString()));
}
}
// add the factset
container.Items.Add(tags);
#endregion
#region Celebrities
// create a fact set for celebrities and landmarks
var celebs = new AdaptiveCards.AdaptiveFactSet();
// create facts for celebs
if (img.AnalysisResult?.Categories != null)
{
// just making sure the same celebs and landmarks dont get added twice
List <string> celebnames = new List <string>();
List <string> landnames = new List <string>();
foreach (var category in img.AnalysisResult.Categories.Where(c => c.Detail != null))
{
dynamic detail = JObject.Parse(category.Detail.ToString());
if (detail.celebrities != null)
{
foreach (var celebrity in detail.celebrities)
{
Models.Celebrity celeb = JsonConvert.DeserializeObject <Models.Celebrity>(celebrity.ToString());
if (!celebnames.Contains(celeb.name))
{
celebnames.Add(celeb.name);
celebs.Facts.Add(new AdaptiveCards.AdaptiveFact(celeb.name, Math.Round(celeb.confidence * 100).ToString() + "%"));
}
}
}
else if (detail.landmarks != null)
{
foreach (var landmark in detail.landmarks)
{
Models.Landmark land = JsonConvert.DeserializeObject <Models.Landmark>(landmark.ToString());
if (!landnames.Contains(land.name))
{
landnames.Add(land.name);
celebs.Facts.Add(new AdaptiveCards.AdaptiveFact(land.name, Math.Round(land.confidence * 100).ToString() + "%"));
}
}
}
}
}
container.Items.Add(celebs);
#endregion
// get the attchment
Attachment att = new Attachment(contentType: AdaptiveCards.AdaptiveCard.ContentType, content: card);
// add the attchment to the message
message.Attachments.Add(att);
}