protected string GetInlineImageWithIdentifiedFaces(IEnumerable <IdentifiedFace> faces)
{
ImageToProcess.Seek(0, SeekOrigin.Begin);
using (var img = new Bitmap(ImageToProcess))
// make copy, drawing on indexed pixel format image is not supported
using (var nonIndexedImg = new Bitmap(img.Width, img.Height))
using (var g = Graphics.FromImage(nonIndexedImg))
using (var mem = new MemoryStream())
{
g.DrawImage(img, 0, 0, img.Width, img.Height);
var i = 0;
foreach (var face in faces)
{
var pen = new Pen(face.Color, 5);
var faceRectangle = face.Face.FaceRectangle;
var rectangle = new Rectangle(faceRectangle.Left,
faceRectangle.Top,
faceRectangle.Width,
faceRectangle.Height);
g.DrawRectangle(pen, rectangle);
i++;
}
nonIndexedImg.Save(mem, ImageFormat.Png);
var base64 = Convert.ToBase64String(mem.ToArray());
return(String.Format("data:image/png;base64,{0}", base64));
}
}
protected string GetInlineImageWithLines(HandwritingTextResult result)
{
ImageToProcess.Seek(0, SeekOrigin.Begin);
using (var img = new Bitmap(ImageToProcess))
// make copy, drawing on indexed pixel format image is not supported
using (var nonIndexedImg = new Bitmap(img.Width, img.Height))
using (var g = Graphics.FromImage(nonIndexedImg))
using (var mem = new MemoryStream())
{
g.DrawImage(img, 0, 0, img.Width, img.Height);
var i = 0;
foreach (var line in result.Lines)
{
var pen = new Pen(Settings.ImageSquareColors[i], 5);
var points = line.Polygon.Points.Select(pp => new System.Drawing.Point
{
X = pp.X,
Y = pp.Y
}).ToArray();
g.DrawPolygon(pen, points);
i++;
}
nonIndexedImg.Save(mem, ImageFormat.Png);
var base64 = Convert.ToBase64String(mem.ToArray());
return(String.Format("data:image/png;base64,{0}", base64));
}
}
public async Task <ActionResult> Landmarks()
{
ViewBag.Title = "Face landmarks";
if (Request.HttpMethod == "GET")
{
return(View("Index"));
}
var imageResult = "";
var file = Request.Files[0];
Face[] faces = new Face[] { };
await RunOperationOnImage(async stream =>
{
faces = await FaceClient.DetectAsync(stream, returnFaceLandmarks: true);
});
ImageToProcess.Seek(0, SeekOrigin.Begin);
using (var img = new Bitmap(ImageToProcess))
// make copy, drawing on indexed pixel format image is not supported
using (var nonIndexedImg = new Bitmap(img.Width, img.Height))
using (var g = Graphics.FromImage(nonIndexedImg))
using (var mem = new MemoryStream())
{
g.DrawImage(img, 0, 0, img.Width, img.Height);
var pen = new Pen(Color.Red, 5);
foreach (var face in faces)
{
var props = typeof(FaceLandmarks).GetProperties();
foreach (var prop in props)
{
if (prop.PropertyType == typeof(FeatureCoordinate))
{
var coordinate = (FeatureCoordinate)prop.GetValue(face.FaceLandmarks);
var rect = new Rectangle((int)coordinate.X, (int)coordinate.Y, 2, 2);
g.DrawRectangle(pen, rect);
}
}
}
nonIndexedImg.Save(mem, ImageFormat.Png);
var base64 = Convert.ToBase64String(mem.ToArray());
imageResult = String.Format("data:image/png;base64,{0}", base64);
}
return(View("Index", (object)imageResult));
}
protected string GetInlineImageWithLines(OcrResults result)
{
ImageToProcess.Seek(0, SeekOrigin.Begin);
using (var img = new Bitmap(ImageToProcess))
// make copy, drawing on indexed pixel format image is not supported
using (var nonIndexedImg = new Bitmap(img.Width, img.Height))
using (var g = Graphics.FromImage(nonIndexedImg))
using (var mem = new MemoryStream())
{
g.DrawImage(img, 0, 0, img.Width, img.Height);
var i = 0;
foreach (var region in result.Regions)
{
foreach (var line in region.Lines)
{
var pen = new Pen(Settings.ImageSquareColors[i], 2);
g.DrawRectangle(pen, new System.Drawing.Rectangle(
line.Rectangle.Left,
line.Rectangle.Top,
line.Rectangle.Width,
line.Rectangle.Height
));
i++;
if (i >= 10)
{
i = 0;
}
}
}
nonIndexedImg.Save(mem, ImageFormat.Png);
var base64 = Convert.ToBase64String(mem.ToArray());
return(String.Format("data:image/png;base64,{0}", base64));
}
}
