我想寫適用SURF目標檢測代碼,所以我把OpenCV的樣品(樣品3)中的一個,我開始更新onCameraViewStarted()
和onCameraFrame()
方法,但我不斷收到一個運行時錯誤,當我試試我的Galaxy S3手機上,我找不到任何東西來幫助我的問題在這裏是我的代碼,我更新的內容:OpenCV的FeatureDetector
public class Sample3Native extends Activity implements CvCameraViewListener{
private static final String TAG = "OCVSample::Activity";
private Mat mRgba;
private Mat mGrayMat;
private CameraBridgeViewBase mOpenCvCameraView;
Mat descriptors ;
List<Mat> descriptorsList;
FeatureDetector featureDetector;
MatOfKeyPoint keyPoints;
DescriptorExtractor descriptorExtractor;
DescriptorMatcher descriptorMatcher;**
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
{
Log.i(TAG, "OpenCV loaded successfully");
// Load native library after(!) OpenCV initialization
System.loadLibrary("native_sample");
mOpenCvCameraView.enableView();
} break;
default:
{
super.onManagerConnected(status);
} break;
}
}
};
public void onCameraViewStarted(int width, int height) {
mRgba = new Mat(height, width, CvType.CV_8UC4);
mGrayMat = new Mat(height, width, CvType.CV_8UC1);
featureDetector=FeatureDetector.create(4); // SURF= 4;
descriptorExtractor=DescriptorExtractor.create(2);//SURF = 2
descriptorMatcher=DescriptorMatcher.create(6); //BRUTEFORCE_SL2 = 6**
}
public Mat onCameraFrame(Mat inputFrame) {
inputFrame.copyTo(mRgba);
//detect_1(0, mRgba.getNativeObjAddr(), keyPoints.getNativeObjAddr());
//Now mRgba contains the current frame (start manipulation part)
//detecting keypoints
featureDetector.detect(mRgba, keyPoints);
//draw keypoints
// Features2d.drawKeypoints(mRgba, keyPoints, mRgba);
//finding descriptors
descriptorExtractor.compute(mRgba, keyPoints, descriptors);
//Matcher between 2 images or set of images
// Note: training set and query set are handled here! (in matcher)
//descriptorsList = descriptorMatcher.getTrainDescriptors();
//descriptorsList.add(descriptors);
// descriptorMatcher.add(descriptorsList);
//Imgproc.cvtColor(mRgba, mGrayMat, Imgproc.COLOR_RGBA2GRAY);
//FindFeatures(mGrayMat.getNativeObjAddr(), mRgba.getNativeObjAddr());
return mRgba;
}
}
注:我曾嘗試在onCameraFrame()
方法講評一切,但featureDetector.detect(mRgba, keyPoints)
和仍然給我的手機運行時錯誤。
你能分享有關錯誤的更多細節?即堆棧跟蹤/ adb logcat輸出? – T045T 2013-05-19 10:25:26