我有JPG格式底片图像的阳性的文件夹和另一个,我想训练基于SVM的图像是,我已经做了以下的,但我收到一个错误:如何根据一组图像训练一个支持opencv的SVM?
Mat classes = new Mat();
Mat trainingData = new Mat();
Mat trainingImages = new Mat();
Mat trainingLabels = new Mat();
CvSVM clasificador;
for (File file : new File(path + "positives/").listFiles()) {
Mat img = Highgui.imread(file.getAbsolutePath());
img.reshape(1, 1);
trainingImages.push_back(img);
trainingLabels.push_back(Mat.ones(new Size(1, 1), CvType.CV_32FC1));
}
for (File file : new File(path + "negatives/").listFiles()) {
Mat img = Highgui.imread(file.getAbsolutePath());
img.reshape(1, 1);
trainingImages.push_back(img);
trainingLabels.push_back(Mat.zeros(new Size(1, 1), CvType.CV_32FC1));
}
trainingImages.copyTo(trainingData);
trainingData.convertTo(trainingData, CvType.CV_32FC1);
trainingLabels.copyTo(classes);
CvSVMParams params = new CvSVMParams();
params.set_kernel_type(CvSVM.LINEAR);
clasificador = new CvSVM(trainingData, classes, new Mat(), new Mat(), params);
当我尝试运行我得到:
OpenCV Error: Bad argument (train data must be floating-point matrix) in cvCheckTrainData, file ..\..\..\src\opencv\modules\ml\src\inner_functions.cpp, line 857
Exception in thread "main" CvException [org.opencv.core.CvException: ..\..\..\src\opencv\modules\ml\src\inner_functions.cpp:857: error: (-5) train data must be floating-point matrix in function cvCheckTrainData
]
at org.opencv.ml.CvSVM.CvSVM_1(Native Method)
at org.opencv.ml.CvSVM.<init>(CvSVM.java:80)
我无法设法训练支持向量机,任何想法?谢谢
我试图分类基础上我已经得到segmets板,我的代码是基于这个例子:https://开头的github .com/MasteringOpenCV/code/blob/master/Chapter5_NumberPlateRecognition/trainSVM.cpp –
您尝试使用CV_64F吗?并且您是否确实要在传递到CvSVM之前检查'trainingData'类型是什么? – morynicz
谢谢@morynicz,'CvType.typeToString(trainingData.type())'将返回“CV_32FC3”..也尝试转换为CV_64F与相同的错误 –