我正在使用 EmguCV 3.1 开发人脸识别应用程序。我使用EigenFaceRecognizer作为识别算法。我尝试使用下面的代码训练图像。
List<Image<Gray, byte>> trainingImages = new List<Image<Gray, byte>>();
FaceRecognizer recognizer;
List<Face> faceList = new List<Face>();
...
...
recognizer = new EigenFaceRecognizer(80, double.PositiveInfinity);
...
...
Image<Gray, byte> image = new Image<Gray, byte>(imgBox2.DisplayedImage.Bitmap);
trainingImages.Add(image);
List<int> trainigLabels = new List<int>();
recognizer.Train(trainingImages.ToArray(), trainigLabels.ToArray());
recognizer.Save("TraningData");
faceList.Add(new Face(image.Bytes.Length, txtName.Text));
...
...
Image<Gray, byte> image = new Image<Gray, byte>(imgBox2.DisplayedImage.Bitmap);
recognizer.Load("TraningData");
try
{
var result = recognizer.Predict(image);
MessageBox.Show(result.Label.ToString());
}
catch (Emgu.CV.Util.CvException ex)
{
Console.WriteLine(ex);
}
但是当调用此代码时,它会给我以下错误。
A first chance exception of type 'Emgu.CV.Util.CvException' occurred in Emgu.CV.World.dll
The program '[1136] IPTest.vshost.exe' has exited with code -1073741819 (0xc0000005) 'Access violation'.
The program '[1136] IPTest.vshost.exe: Program Trace' has exited with code 0 (0x0).
尝试使用recognizer.Train()
时会发生这种情况。我做错了什么?
更新
经过一些试验和错误,我知道问题在于识别器.Predict()方法。
当我使用try / catch时,它显示以下异常
Emgu.CV.Util.CvException: OpenCV: The matrix is not continuous, thus its number of rows can not be changed
答案 0 :(得分:-1)
好的,我找到了解决方案。问题不在我的代码中。当本机代码试图访问某些已损坏或无法访问的内存位置时,它会抛出。
所以我找到了一个简单易用的解决方案。
try
{
var result = recognizer.Predict(image);
}
catch (System.AccessViolationException)
{
recognier = new EigenFaceRecognizer(80, double.PositiveInfinity);
}
但是你无法在运行时捕获AccessViolationException。所以你必须改变设置,以便你可以。为此,您可以关注this question和答案。