public static UIImage DrawResults(UIImage img, MultiboxGraph.Result result, float scoreThreshold)
{
Rectangle[] locations = ScaleLocation(result.DecodedLocations, (int)img.Size.Width, (int)img.Size.Height);
UIGraphics.BeginImageContextWithOptions(img.Size, false, 0);
var context = UIGraphics.GetCurrentContext();
img.Draw(new CGPoint());
context.SetStrokeColor(UIColor.Red.CGColor);
context.SetLineWidth(2);
for (int i = 0; i < result.Scores.Length; i++)
{
if (result.Scores[i] > scoreThreshold)
{
Rectangle rect = locations[result.Indices[i]];
CGRect cgRect = new CGRect(rect.X, rect.Y, rect.Width, rect.Height);
context.AddRect(cgRect);
context.DrawPath(CGPathDrawingMode.Stroke);
}
}
UIImage imgWithRect = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return(imgWithRect);
}
public static void DrawResults(NSImage img, MultiboxGraph.Result result, float scoreThreshold)
{
Rectangle[] locations = ScaleLocation(result.DecodedLocations, (int)img.Size.Width, (int)img.Size.Height);
img.LockFocus();
NSColor redColor = NSColor.Red;
redColor.Set();
var context = NSGraphicsContext.CurrentContext;
var cgcontext = context.CGContext;
cgcontext.ScaleCTM(1, -1);
cgcontext.TranslateCTM(0, -img.Size.Height);
//context.IsFlipped = !context.IsFlipped;
for (int i = 0; i < result.Scores.Length; i++)
{
if (result.Scores[i] > scoreThreshold)
{
Rectangle rect = locations[result.Indices[i]];
//img.Draw()
//Trace.WriteLine(String.Format("x: {0}, y: {1}, w: {2}, h: {3}", rect.X, rect.Y, rect.Width, rect.Height));
CGRect cgRect = new CGRect(rect.X, rect.Y, rect.Width, rect.Height);
//img.Draw(cgRect);
//CGPath path = CGPath.FromRect(cgRect);
//NSBezierPath path = NSBezierPath.FromOvalInRect(cgRect);
//path.Fill();
//path.Stroke();
NSBezierPath.StrokeRect(cgRect);
//img.Draw(cgRect, );
}
}
img.UnlockFocus();
}
public byte[] DrawResultsToJpeg(String fileName, MultiboxGraph.Result detectResult, float scoreThreshold = 0.2f)
{
#if __ANDROID__
BitmapFactory.Options options = new BitmapFactory.Options();
options.InMutable = true;
Android.Graphics.Bitmap bmp = BitmapFactory.DecodeFile(fileName, options);
MultiboxGraph.DrawResults(bmp, detectResult, scoreThreshold);
using (MemoryStream ms = new MemoryStream())
{
bmp.Compress(Bitmap.CompressFormat.Jpeg, 90, ms);
return(ms.ToArray());
}
#elif __MACOS__
NSImage img = NSImage.ImageNamed(fileName);
MultiboxGraph.DrawResults(img, detectResult, scoreThreshold);
var imageData = img.AsTiff();
var imageRep = NSBitmapImageRep.ImageRepsWithData(imageData)[0] as NSBitmapImageRep;
var jpegData = imageRep.RepresentationUsingTypeProperties(NSBitmapImageFileType.Jpeg, null);
byte[] jpeg = new byte[jpegData.Length];
System.Runtime.InteropServices.Marshal.Copy(jpegData.Bytes, jpeg, 0, (int)jpegData.Length);
return(jpeg);
#elif __IOS__
UIImage uiimage = new UIImage(fileName);
UIImage newImg = MultiboxGraph.DrawResults(uiimage, detectResult, scoreThreshold);
var jpegData = newImg.AsJPEG();
byte[] jpeg = new byte[jpegData.Length];
System.Runtime.InteropServices.Marshal.Copy(jpegData.Bytes, jpeg, 0, (int)jpegData.Length);
return(jpeg);
#else
throw new Exception("Not implemented");
#endif
}
public static void DrawResults(Bitmap bmp, MultiboxGraph.Result result, float scoreThreshold)
{
Rectangle[] locations = ScaleLocation(result.DecodedLocations, bmp.Width, bmp.Height);
using (Graphics g = Graphics.FromImage(bmp))
{
for (int i = 0; i < result.Scores.Length; i++)
{
if (result.Scores[i] > scoreThreshold)
{
Rectangle rect = locations[result.Indices[i]];
Pen redPen = new Pen(Color.Red, 3);
g.DrawRectangle(redPen, rect);
}
}
g.Save();
}
}
public static void DrawResults(Android.Graphics.Bitmap bmp, MultiboxGraph.Result result, float scoreThreshold)
{
Rectangle[] locations = ScaleLocation(result.DecodedLocations, bmp.Width, bmp.Height);
Android.Graphics.Paint p = new Android.Graphics.Paint();
p.SetStyle(Paint.Style.Stroke);
p.AntiAlias = true;
p.Color = Android.Graphics.Color.Red;
Canvas c = new Canvas(bmp);
for (int i = 0; i < result.Scores.Length; i++)
{
if (result.Scores[i] > scoreThreshold)
{
Rectangle rect = locations[result.Indices[i]];
Android.Graphics.Rect r = new Rect(rect.Left, rect.Top, rect.Right, rect.Bottom);
c.DrawRect(r, p);
}
}
}
public static void DrawResults(Texture2D image, MultiboxGraph.Result result, float scoreThreshold)
{
Rect[] locations = ScaleLocation(result.DecodedLocations, image.width, image.height);
Color color = new Color(1.0f, 0, 0);//Set color to red
for (int i = 0; i < result.Scores.Length; i++)
{
if (result.Scores[i] > scoreThreshold)
{
Rect r = locations[result.Indices[i]];
//Texture 2D coordinates is flipped upside down, we need to do the same flipping for the Rectangle
r.y = image.height - r.y - r.height;
DrawRect(image, r, color);
}
}
image.Apply();
//GUI.color = Color.white;//Reset color to white
/*
* Android.Graphics.Paint p = new Android.Graphics.Paint();
* p.SetStyle(Paint.Style.Stroke);
* p.AntiAlias = true;
* p.Color = Android.Graphics.Color.Red;
* Canvas c = new Canvas(bmp);
*
*
* for (int i = 0; i < result.Scores.Length; i++)
* {
* if (result.Scores[i] > scoreThreshold)
* {
* Rectangle rect = locations[result.Indices[i]];
* Android.Graphics.Rect r = new Rect(rect.Left, rect.Top, rect.Right, rect.Bottom);
* c.DrawRect(r, p);
* }
* }*/
}
