[英]Reading values in opencv_face.LBPHFaceRecognizer.getHistograms()
I am trying to work with the open_cv library in android.我正在尝试使用 android 中的 open_cv 库。 I have never worked on it before, so this may be a very basic question.
我以前从未研究过它,所以这可能是一个非常基本的问题。
I have an opencv_face.LBPHFaceRecognizer
object in my Recognizer Activity.我的识别器活动中有一个
opencv_face.LBPHFaceRecognizer
object。 My requirement is to read the histogram values for previously-stored faces.我的要求是读取以前存储的人脸的直方图值。
opencv_face.LBPHFaceRecognizer mFaceRecognizer = = createLBPHFaceRecognizer(2, 8, 8, 8, 95);
File file = new File(RegisterActivity.getFilePath(mContext));
mFaceRecognizer.load(file.getAbsolutePath());
opencv_core.MatVector vector = mFaceRecognizer.getHistograms();
for (int i = 0; i < vector.size(); i++) {
opencv_core.Mat mat = vector.get(i);
opencv_core.Size size = mat.size();
for (int j = 0; j < size.height();j++)
for (int k = 0; k < size.width(); k++) {
// Here I want to ready the values (which would be same as the values in file am initializing mFaceRecognizer with) of these matrices but I am not able to find any appropriate method to do so.
}
}
Please help me out with the required methods to do so, I have tried many resources and gone through documentation as well, but being a beginner I think I am missing something.请帮助我完成所需的方法,我尝试了很多资源并浏览了文档,但是作为初学者,我认为我遗漏了一些东西。
I am not able to find any version of.get() or.at() method in mat object.我无法在 mat object 中找到任何版本的 .get() 或 .at() 方法。
Any help would be greatly appreciated.任何帮助将不胜感激。 Thanks in advance.
提前致谢。
I was able to read the values by converting opencv_core.Mat to opencv_core.CvMat object.我能够通过将 opencv_core.Mat 转换为 opencv_core.CvMat object 来读取这些值。 I don't know for what reason this object is marked deprecated but this worked fine for me:
我不知道为什么这个 object 被标记为已弃用,但这对我来说很好:
double[][] input = new double[(int)vector.size()][vector.get(0).size().width()];
for (int i = 0; i < vector.size(); i++) {
opencv_core.Mat mat = vector.get(i);
(new opencv_core.CvMat(mat)).get(input[i]);
}
input variable here now had required values of all the histograms.此处的输入变量现在具有所有直方图的所需值。
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