C#•10mo ago

✅ A generic error occurred in GDI+.' -> Save Image Path

Hey, I been trying to making some face recognition using EMGU.CV, but I faces a problem which, when I'm trying to save the picture, which the cropped side (faces) so I could using that to face recognition in future, but when I'm trying to save it by binding to button1, it give me a problem -> System.Runtime.InteropServices.ExternalException: 'A generic error occurred in GDI+.' .

 private int faceCounter = 0;
 private void button1_Click(object sender, System.EventArgs e)
 {

     if (pictureBox2.Image != null)
     {
 
         string savePath = Application.StartupPath + "/TrainedFaces/face" + faceCounter + ".bmp";
         pictureBox2.Image.Save(savePath, System.Drawing.Imaging.ImageFormat.Bmp);

         faceCounter++;

         MessageBox.Show("Cropped face saved successfully.");
     }
     else
     {
         MessageBox.Show("No face detected to save.");
     }
 }

 private int faceCounter = 0;
 private void button1_Click(object sender, System.EventArgs e)
 {

     if (pictureBox2.Image != null)
     {
 
         string savePath = Application.StartupPath + "/TrainedFaces/face" + faceCounter + ".bmp";
         pictureBox2.Image.Save(savePath, System.Drawing.Imaging.ImageFormat.Bmp);

         faceCounter++;

         MessageBox.Show("Cropped face saved successfully.");
     }
     else
     {
         MessageBox.Show("No face detected to save.");
     }
 }

  private async Task StreamVideo2()
{
    var faceCasade = new        CascadeClassifier("./detection/haarcascade_frontalface_default.xml");
    var vc = new VideoCapture(0, Emgu.CV.VideoCapture.API.DShow);

    var faces = faceCasade.DetectMultiScale(frameGray, 1.3, 5);
    while (streamVideo)
    {
....

....
        pictureBox2.Image = grayCroppedFace.ToBitmap();
....
        var img = frame.ToBitmap();
        pictureBox1.Image = img;


.....
    }
}

  private async Task StreamVideo2()
{
    var faceCasade = new        CascadeClassifier("./detection/haarcascade_frontalface_default.xml");
    var vc = new VideoCapture(0, Emgu.CV.VideoCapture.API.DShow);

    var faces = faceCasade.DetectMultiScale(frameGray, 1.3, 5);
    while (streamVideo)
    {
....

....
        pictureBox2.Image = grayCroppedFace.ToBitmap();
....
        var img = frame.ToBitmap();
        pictureBox1.Image = img;


.....
    }
}

4 Replies

leowest•10mo ago

have u checked if the folder exists

string folder = Path.Combine(Application.StartupPath, "TrainedFaces");
string savePath = Path.Combine(folder, $"face{faceCounter}.bmp");
if (!Directory.Exists(folder))
{
    MessageBox.Show("Folder not found");
    return;
}

string folder = Path.Combine(Application.StartupPath, "TrainedFaces");
string savePath = Path.Combine(folder, $"face{faceCounter}.bmp");
if (!Directory.Exists(folder))
{
    MessageBox.Show("Folder not found");
    return;
}

also use Path.Combine instead of manually doing as its safer alternatively instead of saving from the picturebox, can u try saving from a new object

using var bitmapImage = new Bitmap(pictureBox2.Image);
bitmapImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Bmp);

using var bitmapImage = new Bitmap(pictureBox2.Image);
bitmapImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Bmp);

usually that happens when it can't find the path to save or when GDI is still in use so having a different object to save can work in that case

WubaoOP•10mo ago

Silly me! I spend my 20 minutes figure what's the problem, and the problem that, I was on different project folder, since the folder named similar, the only different its the dot at the end! and thank you for the advice and the answer, I would happly hear all the suggestion.

MODiX•10mo ago

Use the /close command to mark a forum thread as answered

leowest•10mo ago

no worries 😉

Gaming

Programming

✅ A generic error occurred in GDI+.' -> Save Image Path