转换的Android位图OpenCV的垫子和倒退 [英] Convert Android Bitmap to OpenCV Mat and backwards
问题描述
我想简单地转换为位图，从机器人到了OpenCV的一个垫目标。本主题往往不客气堆栈溢出。例如：
I wanted to simply convert a bitmap from Android to a Mat object for OpenCV. This topic is often adressed on Stack Overflow. For example:
转换垫为位图OpenCV进行Android的; <一href="http://stackoverflow.com/questions/17390289/convert-bitmap-to-mat-after-capture-image-using-android-camera?rq=1">convert位图使用Android摄像头捕获图像之后，太; <一href="http://stackoverflow.com/questions/13900247/templatematching-mattobitmap-opencv-for-android?lq=1">templateMatching mattoBitmap OpenCV的Android版
convert Mat to Bitmap Opencv for Android ; convert Bitmap to Mat after capture image using android camera ; templateMatching mattoBitmap opencv for android
甚至有更多的发现。我跟着这个答案instrcutions，但我仍然无法得到的是做了正确的方式。
There is even more to find. I followed the instrcutions in this answers, but I'm still unable to get is done the right way.
最小的code：
//First convert Bitmap to Mat
Mat ImageMat = new Mat ( image.getHeight(), image.getWidth(), CvType.CV_8U, new Scalar(4));
Bitmap myBitmap32 = image.copy(Bitmap.Config.ARGB_8888, true);
Utils.bitmapToMat(myBitmap32, ImageMat);
//Do smth.
Imgproc.cvtColor(ImageMat, ImageMat, Imgproc.COLOR_RGB2GRAY,4);
//Then convert the processed Mat to Bitmap
Bitmap resultBitmap = Bitmap.createBitmap(ImageMat.cols(), ImageMat.rows(),Bitmap.Config.ARGB_8888);;
Utils.matToBitmap(ImageMat, resultBitmap);
//Set member to the Result Bitmap. This member is displayed in an ImageView
mResult = resultBitmap;
（注：图片是提供给该行的code位图）
(note: image is a Bitmap supplied to this lines of code)
错误： 08-07 15：13：59.188：E / AndroidRuntime（2115）：致命异常：主要
Errors: 08-07 15:13:59.188: E/AndroidRuntime(2115): FATAL EXCEPTION: main
08-07 15：13：59.188：E / AndroidRuntime（2115）：java.lang.NoClassDefFoundError的：org.opencv.core.Mat
08-07 15:13:59.188: E/AndroidRuntime(2115): java.lang.NoClassDefFoundError: org.opencv.core.Mat
但我impots是：
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
//OpenCV
import org.opencv.android.Utils;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Scalar;
import org.opencv.imgproc.Imgproc;
真的AP preciate任何形式的帮助。 由于丹斯
Would really appreciate any sort of help. Thanks DanS
推荐答案
您只能使用OpenCV的做你的工作，它初始化后。 所以，你需要初始化这样的：
You only can do your work with OpenCV after it is initialized. So you need to initialize it like that:
-
创建一个回调：
Create a Callback:
私人BaseLoaderCallback mOpenCVCallBack =新BaseLoaderCallback（本）{
@覆盖
公共无效onManagerConnected（INT状态）{
开关（状态）{
案例LoaderCallbackInterface.SUCCESS：
//做你的工作/东西在这里
打破;
默认：
super.onManagerConnected（状态）;
打破;
}
}
};
private BaseLoaderCallback mOpenCVCallBack = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
//DO YOUR WORK/STUFF HERE
break;
default:
super.onManagerConnected(status);
break;
}
}
};
@覆盖
保护无效onResume（）{
super.onResume（）;
OpenCVLoader.initAsync（OpenCVLoader.OPENCV_VERSION_2_4_8，这一点，
mOpenCVCallBack）;
}
和多数民众赞成它，我希望它是有益的：D
@Override
protected void onResume() {
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_8, this,
mOpenCVCallBack);
}
and thats it, i hope it was helpful :D
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