我有一个包含正面和负面图像的文件夹,格式为JPG,我想要根据这些图像训练出一个基于SVM的模型。我已经尝试了以下操作,但是遇到了错误:
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);
当我尝试运行时,会出现以下错误信息:
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)
我无法训练支持向量机(SVM),有什么建议吗?谢谢。
trainingData
在传递到CvSVM之前的类型? - morynicz