安卓& OpenCV:Utils.bitmapToMat崩溃 [英] Android & OpenCV : Utils.bitmapToMat crashes
本文介绍了安卓& OpenCV:Utils.bitmapToMat崩溃的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要将我的资源图片之一从OpenCV转换为Mat,但是应用程序在使用此代码时崩溃:
I need to convert one of my ressource picture to a Mat from OpenCV, but the app crashes while using this code :
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.cmc7);
Mat myMat = new Mat();
Utils.bitmapToMat(mBitmap, myMat);
setContentView(R.layout.main);
}
只要我没有bitmapToMat行,一切都很好.
As long as I do not have the bitmapToMat line, everything is fine.
FATAL EXCEPTION: main
?:??: W/?(?): java.lang.UnsatisfiedLinkError: Native method not found: org.opencv.core.Mat.n_Mat:(III)J
?:??: W/?(?): org.opencv.com.Mat.n_Mat(Native Method)
这很烦人.
推荐答案
哦,在管理器完成加载之前,您不能使用任何与opencv相关的代码;)
oh, you cannot use any opencv - related code, until the manager finished loading ;)
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
if (status == LoaderCallbackInterface.SUCCESS ) {
// now we can call opencv code !
Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.cmc7);
Mat myMat = new Mat();
Utils.bitmapToMat(mBitmap, myMat);
} else {
super.onManagerConnected(status);
}
}
};
@Override
public void onResume() {;
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_5,this, mLoaderCallback);
// you may be tempted, to do something here, but it's *async*, and may take some time,
// so any opencv call here will lead to unresolved native errors.
}
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