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";
}
}
}
//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);
}
public async Task <string> GetHandwrittenTextFromImage(Stream picture)
{
try
{
var result = await _visionClient.RecognizeTextAsync(picture, "en");
//return result.Regions[0].Lines.();
if (result.Regions.Length > 0)
{
if (result.Regions[0].Lines.Length > 0)
{
if (result.Regions[0].Lines[0].Words.Length > 0)
{
return(result.Regions[0].Lines[0].Words[0].Text);
}
}
}
}
catch (System.Exception ex)
{
}
return("ERROR Recognizing");
}