private void button1_Click(object sender, EventArgs e)
{
//抓取key
var VisionApiKey = textBoxkey.Text.Trim();
//讀取圖檔
var openDlg = new OpenFileDialog();
//圖檔過濾類型
openDlg.Filter = "JPEG Image(*.jpg)|*.jpg|*.png|*.png";
//沒選檔案
if (openDlg.ShowDialog(this) != DialogResult.OK)
{
return;
}
//取得選擇的檔案名稱
string filePath = openDlg.FileName;
//顯示原始圖片
var FileStream = new System.IO.FileStream(filePath, FileMode.Open, FileAccess.Read);
pictureBox1.Image = System.Drawing.Image.FromStream(FileStream);
FileStream.Close();
//OCR OcrResults
OcrResults OcrResults;
//建立VisionServiceClient
var visionClient = new Microsoft.ProjectOxford.Vision.VisionServiceClient(VisionApiKey);
using (var fs = new FileStream(filePath, FileMode.Open))
{
this.textBox.Text = "辨識中...";
//以繁體中文辨識
OcrResults = visionClient.RecognizeTextAsync(fs, LanguageCodes.AutoDetect).Result;
this.textBox.Text = "";
}
this.textBox.Text = "";
//抓取每一區塊的辨識結果
foreach (var Region in OcrResults.Regions)
{
//抓取每一行
foreach (var line in Region.Lines)
{
//抓取每一個字
foreach (var Word in line.Words)
{
//顯示辨識結果
this.textBox.Text += Word.Text;
}
//加換行
this.textBox.Text += "\n";
}
}
}
public static async Task Run([BlobTrigger("handwritten/{name}", Connection = "storage")] string content, string name, TraceWriter log)
{
var client = new Microsoft.ProjectOxford.Vision.VisionServiceClient(
Environment.GetEnvironmentVariable("Computer-Vision-Ocp-Apim-Subscription-Key"),
Environment.GetEnvironmentVariable("Computer-Vision-Api-Root"));
HandwritingRecognitionOperationResult result = null;
try
{
var operation = await client.CreateHandwritingRecognitionOperationAsync($"https://sqlsat707.blob.core.windows.net/handwritten/{name}");
result = await client.GetHandwritingRecognitionOperationResultAsync(operation);
}
catch (Exception ex)
{
throw ex;
}
// now insert
var connectionString = Environment.GetEnvironmentVariable("ConnectionString");
using (var conn = new SqlConnection(connectionString))
{
conn.Open();
var cmd = conn.CreateCommand();
cmd.CommandText = "ImportTemperatureEvent";
cmd.CommandType = CommandType.StoredProcedure;
var deviceId = cmd.Parameters.Add("@DeviceId", SqlDbType.NVarChar, 32);
var timestamp = cmd.Parameters.Add("@Timestamp", SqlDbType.DateTimeOffset);
var temperature = cmd.Parameters.Add("@Temperature", SqlDbType.Float);
foreach (var line in result.RecognitionResult.Lines)
{
deviceId.Value = line.Words[0].Text;
timestamp.Value = DateTimeOffset.Now;
temperature.Value = double.Parse(line.Words[1].Text);
cmd.ExecuteNonQuery();
}
conn.Close();
}
}
//this code is revised from http://studyhost.blogspot.com/2016/08/microsoft-cognitive-services-2-vision.html
public static string GetOcrResults(string subscriptionKey, string apiRoot, byte[] filebody, string languageCodes)
{
string result = string.Empty;
OcrResults OcrResults = default(OcrResults);
//建立VisionServiceClient
var visionClient = new Microsoft.ProjectOxford.Vision.VisionServiceClient(subscriptionKey, apiRoot);
using (var ms = new MemoryStream(filebody, true))
{
//以繁體中文辨識
//OcrResults = visionClient.RecognizeTextAsync(ms, LanguageCodes.AutoDetect).Result;
OcrResults = visionClient.RecognizeTextAsync(ms, languageCodes).Result;
}
//抓取每一區塊的辨識結果
foreach (var Region in OcrResults.Regions)
{
//抓取每一行
foreach (var line_loopVariable in Region.Lines)
{
var line = line_loopVariable;
dynamic aline = "";
//抓取每一個字
foreach (var Word_loopVariable in line.Words)
{
var Word = Word_loopVariable;
//顯示辨識結果
aline += Word.Text;
}
//加換行
result += aline + "\n";
}
}
return(result);
}
async Task SelectImage(bool selectImageFromCamera)
{
MediaFile image;
if (selectImageFromCamera)
{
image = await CrossMedia.Current.TakePhotoAsync(new StoreCameraMediaOptions()
{
AllowCropping = true,
DefaultCamera = CameraDevice.Rear,
CompressionQuality = 60,
});
}
else
{
image = await CrossMedia.Current.PickPhotoAsync(new PickMediaOptions()
{
CompressionQuality = 60
});
}
if (image == null)
{
return;
}
var dlg = DependencyService.Get <IShowInProgressDialog>();
dlg.Show("Processing the image...");
var spot = new FavouriteSpot()
{
Name = "Spot",
RatingOutOfFive = 5,
AddedById = App.AuthenticatedUser != null ? App.AuthenticatedUser.UserId : "",
};
var processingTask = GetCurrentDevicePositionAsync().ContinueWith((locationTask) =>
{
var location = locationTask.Result;
spot.Latitude = location.Latitude;
spot.Longitude = location.Longitude;
new Geocoder()
.GetAddressesForPositionAsync(new Position(location.Latitude, location.Longitude))
.ContinueWith((possibleAddressMatches) =>
{
if (possibleAddressMatches.Result.Count() > 0)
{
spot.Address = possibleAddressMatches.Result.First();
}
});
});
// Get the description of the image using Azure Cognative Services
var visionClient = new Microsoft.ProjectOxford.Vision.VisionServiceClient(MobileServiceClientConstants.CognativeServicesVisionApiKey);
var processImage = visionClient.DescribeAsync(image.GetStream()).ContinueWith((imageDescriptionTask) =>
{
// Process the Cognative Services Result
var suggestedCategories = String.Join(", ", imageDescriptionTask.Result.Description.Tags);
if (String.IsNullOrEmpty(spot.Category))
{
spot.Category = suggestedCategories;
}
var suggestedDescription = imageDescriptionTask.Result.Description.Captions.First();
if (suggestedDescription != null && String.IsNullOrEmpty(spot.Description))
{
spot.Description = suggestedDescription.Text;
}
});
// Wait for the operations to finish
await Task.WhenAll(processingTask, processImage);
dlg.Hide();
// Show the edit page to let them save the record or not
var editPage = new AddEditSpotPage(Data, spot, image);
await Navigation.PushAsync(editPage);
}
//private BlobStorageAsync bs;
public TextRecognitionService()
{
this._entityLinkClient = new Microsoft.ProjectOxford.EntityLinking.EntityLinkingServiceClient("8ac77dcbac034f239d735088bc51c51c", "https://westus.api.cognitive.microsoft.com");
this._visionClient = new Microsoft.ProjectOxford.Vision.VisionServiceClient(this._subscriptionKey, "https://westeurope.api.cognitive.microsoft.com/vision/v1.0");
//this.bs = new BlobStorageAsync("XamarinHackaton", "DefaultEndpointsProtocol=https;AccountName=storagetestcognitive;AccountKey=PpjUl52zALHyVIWbLnIOb66shgzT5A9L3XKq7i6OK/xnaR1UFsBE+a8IDJJZGESCuy+mu2Vo5yyE499azRDytw==;EndpointSuffix=core.windows.net");
}
