2
SIFT、SURF、BRIEFおよびORBが何をするかを示す簡単なアプリケーション（sample2の変更）を実装したいと思います。ユーザは回転またはスケールの不変性または速度を単純に比較することができる。しかし、私は私があなたの助けに向けるために扱うことができない失敗を見つけました。 SIFTまたはSURFを使用しようとすると、一致するように試みると常に例外が発生します。matcherBruteForce.match(descriptorFrame, matches);パターン認識アルゴリズムの例外を取得するOpenCVでのANDROIDのためのSIFT、
私は同様のARアプリケーションを使用しています。これらの設定では動作していますので、間違っています。私は変数 "matcherBruteForce"をBRUTEFORCE、BRUTEFORCE_L1、BRUTEFORCE_SL2イベントをBRUTEFORCE_HAMMINGに設定しようとしました。しかし、私はいつも同じ例外を得た：
SIFT：
CvException [org.opencv.core.CvException: /home/andreyk/OpenCV2/trunk/opencv_2.3.1.b2/modules/features2d/include/opencv2/features2d/features2d.hpp:2455: error: (-215) DataType<ValueType>::type == matcher.trainDescCollection[iIdx].type() || matcher.trainDescCollection[iIdx].empty() in function static void cv::BruteForceMatcher<Distance>::commonKnnMatchImpl(cv::BruteForceMatcher<Distance>&, const cv::Mat&, std::vector<std::vector<cv::DMatch> >&, int, const std::vector<cv::Mat>&, bool) [with Distance = cv::SL2<float>]
]
SURF：
任意のヘルプは を高く評価しCvException [org.opencv.core.CvException: /home/andreyk/OpenCV2/trunk/opencv_2.3.1.b2/modules/features2d/include/opencv2/features2d/features2d.hpp:2455: error: (-215) DataType<ValueType>::type == matcher.trainDescCollection[iIdx].type() || matcher.trainDescCollection[iIdx].empty() in function static void cv::BruteForceMatcher<Distance>::commonKnnMatchImpl(cv::BruteForceMatcher<Distance>&, const cv::Mat&, std::vector<std::vector<cv::DMatch> >&, int, const std::vector<cv::Mat>&, bool) [with Distance = cv::SL2<float>]
]
クラス全体：あなたは
package sk.bolyos.opencv;
import java.util.Vector;
import org.opencv.features2d.DMatch;
import org.opencv.features2d.DescriptorExtractor;
import org.opencv.features2d.DescriptorMatcher;
import org.opencv.features2d.FeatureDetector;
import org.opencv.features2d.Features2d;
import org.opencv.features2d.KeyPoint;
import org.opencv.highgui.VideoCapture;
import org.opencv.android.Utils;
import org.opencv.core.Mat;
import org.opencv.core.Size;
import org.opencv.imgproc.Imgproc;
import org.opencv.highgui.Highgui;
import sk.bolyos.svk.*;
import android.content.Context;
import android.graphics.Bitmap;
import android.util.Log;
import android.view.SurfaceHolder;
public class MyView extends CvViewBase {
private static final int BOUNDARY = 35;
private Mat mRgba;
private Mat mGray;
private Mat mIntermediateMat;
private Mat mLogoMilka1,mLogoMilka2,mLogoMilka3,mLogoMilka4;
///////////////////DETECTORS
FeatureDetector siftDetector = FeatureDetector.create(FeatureDetector.SIFT);
FeatureDetector surfDetector = FeatureDetector.create(FeatureDetector.SURF);
FeatureDetector fastDetector = FeatureDetector.create(FeatureDetector.FAST);
FeatureDetector orbDetector = FeatureDetector.create(FeatureDetector.ORB);
///////////////////DESCRIPTORS
DescriptorExtractor siftDescriptor = DescriptorExtractor.create(DescriptorExtractor.SIFT);
DescriptorExtractor surfDescriptor = DescriptorExtractor.create(DescriptorExtractor.SURF);
DescriptorExtractor briefDescriptor = DescriptorExtractor.create(DescriptorExtractor.BRIEF);
DescriptorExtractor orbDescriptor = DescriptorExtractor.create(DescriptorExtractor.ORB);
///////////////////DATABASE
Vector<KeyPoint> vectorMilka1 = new Vector<KeyPoint>();
Vector<KeyPoint> vectorMilka2 = new Vector<KeyPoint>();
Vector<KeyPoint> vectorMilka3 = new Vector<KeyPoint>();
Vector<KeyPoint> vectorMilka4 = new Vector<KeyPoint>();
Mat descriptorMilka1 = new Mat();
Mat descriptorMilka2 = new Mat();
Mat descriptorMilka3 = new Mat();
Mat descriptorMilka4 = new Mat();
///////////////////VIDEO
Vector<KeyPoint> vectorFrame = new Vector<KeyPoint>();
Mat descriptorFrame = new Mat();
DescriptorMatcher matcherHamming = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMINGLUT);
DescriptorMatcher matcherBruteForce = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_SL2);
Vector<DMatch> matches = new Vector<DMatch>();
Vector<Mat> siftDescriptors = new Vector<Mat>();
Vector<Mat> surfDescriptors = new Vector<Mat>();
Vector<Mat> briefDescriptors = new Vector<Mat>();
Vector<Mat> orbDescriptors = new Vector<Mat>();
public MyView(Context context) {
super(context);
// TODO Auto-generated constructor stub
try{
/*
if (mLogoMilka1 == null){
mLogoMilka1 = new Mat();
mLogoMilka1 = Utils.loadResource(getContext(), R.drawable.milkalogo);
fillDB(mLogoMilka1,vectorMilka1,descriptorMilka1);
}
if (mLogoMilka2 == null){
mLogoMilka2 = new Mat();
mLogoMilka2 = Utils.loadResource(getContext(), R.drawable.milkalogom);
fillDB(mLogoMilka2,vectorMilka2,descriptorMilka2);
}
if (mLogoMilka3 == null){
mLogoMilka3 = new Mat();
mLogoMilka3 = Utils.loadResource(getContext(), R.drawable.milkalogol);
fillDB(mLogoMilka3,vectorMilka3,descriptorMilka3);
}*/
if (mLogoMilka4 == null){
mLogoMilka4 = new Mat();
mLogoMilka4 = Utils.loadResource(getContext(), R.drawable.milkalogolc);
fillDB(mLogoMilka4,vectorMilka4,descriptorMilka4);
}
}catch(Exception e){
Log.e("SVK APPLICATION", "in MyView constructor "+e.toString());
}
}
public void fillDB(Mat mLogo,Vector<KeyPoint> vector,Mat descriptor){
//SIFT
siftDetector.detect(mLogo, vector);
siftDescriptor.compute(mLogo, vector, descriptor);
siftDescriptors.add(descriptor);
//SURF
surfDetector.detect(mLogo, vector);
surfDescriptor.compute(mLogo, vector, descriptor);
surfDescriptors.add(descriptor);
//FAST+BRIEF
fastDetector.detect(mLogo, vector);
briefDescriptor.compute(mLogo, vector, descriptor);
briefDescriptors.add(descriptor);
//ORB
orbDetector.detect(mLogo, vector);
orbDescriptor.compute(mLogo, vector, descriptor);
orbDescriptors.add(descriptor);
}
@Override
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
super.surfaceChanged(_holder, format, width, height);
synchronized (this) {
// initialize Mats before usage
mGray = new Mat();
mRgba = new Mat();
mIntermediateMat = new Mat();
matches = new Vector<DMatch>();
vectorFrame = new Vector<KeyPoint>();
descriptorFrame = new Mat();
}
}
@Override
protected Bitmap processFrame(VideoCapture capture) {
// TODO Auto-generated method stub
switch (SVKApplikaciaActivity.viewMode) {
case SVKApplikaciaActivity.VIEW_MODE_SIFT:
//TODO SIFT
try{
//matcherBruteForce = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE);
//matcherBruteForce.clear();
matcherBruteForce.add(siftDescriptors);
matcherBruteForce.train();// proba
capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
Imgproc.resize(mGray, mGray,new Size(480,320));
siftDetector.detect(mGray, vectorFrame);
siftDescriptor.compute(mGray, vectorFrame, descriptorFrame);
matcherBruteForce.match(descriptorFrame, matches);
Vector<DMatch> matchesXXX = new Vector<DMatch>();
for (DMatch t : matches)
if(t.distance<BOUNDARY)
matchesXXX.add(t);
Mat nGray = new Mat();
Mat nLogo = new Mat();
Mat nRgba = new Mat();
Imgproc.cvtColor(mGray, nGray, Imgproc.COLOR_RGBA2RGB, 3);
Imgproc.cvtColor(mLogoMilka4, nLogo, Imgproc.COLOR_RGBA2BGR, 3);
Features2d.drawMatches(nGray, vectorFrame, nLogo, vectorMilka4, matchesXXX, nRgba);
Imgproc.cvtColor(nRgba, mRgba, Imgproc.COLOR_RGB2RGBA, 4);
}catch(Exception e){
Log.e("SVK APPLICATION","in SIFT "+ e.toString());
}
break;
case SVKApplikaciaActivity.VIEW_MODE_SURF:
//TODO SURF
try{
//matcherBruteForce = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE);
//matcherBruteForce.clear();
matcherBruteForce.add(surfDescriptors);
matcherBruteForce.train();// proba
capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
Imgproc.resize(mGray, mGray,new Size(480,320));
surfDetector.detect(mGray, vectorFrame);
surfDescriptor.compute(mGray, vectorFrame, descriptorFrame);
matcherBruteForce.match(descriptorFrame, matches);
Vector<DMatch> matchesXXX = new Vector<DMatch>();
for (DMatch t : matches)
if(t.distance<BOUNDARY)
matchesXXX.add(t);
Mat nGray = new Mat();
Mat nLogo = new Mat();
Mat nRgba = new Mat();
Imgproc.cvtColor(mGray, nGray, Imgproc.COLOR_RGBA2RGB, 3);
Imgproc.cvtColor(mLogoMilka4, nLogo, Imgproc.COLOR_RGBA2BGR, 3);
Features2d.drawMatches(nGray, vectorFrame, nLogo, vectorMilka4, matchesXXX, nRgba);
Imgproc.cvtColor(nRgba, mRgba, Imgproc.COLOR_RGB2RGBA, 4);
}catch(Exception e){
Log.e("SVK APPLICATION","in Surf "+ e.toString());
}
break;
case SVKApplikaciaActivity.VIEW_MODE_BRIEF:
//TODO BRIEF
try{
matcherHamming = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMINGLUT);
matcherHamming.add(briefDescriptors);
matcherHamming.train();// proba
capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
Imgproc.resize(mGray, mGray,new Size(480,320));
fastDetector.detect(mGray, vectorFrame);
briefDescriptor.compute(mGray, vectorFrame, descriptorFrame);
matcherHamming.match(descriptorFrame, matches);
Vector<DMatch> matchesXXX = new Vector<DMatch>();
for (DMatch t : matches)
if(t.distance<BOUNDARY)
matchesXXX.add(t);
Mat nGray = new Mat();
Mat nLogo = new Mat();
Mat nRgba = new Mat();
Imgproc.cvtColor(mGray, nGray, Imgproc.COLOR_RGBA2RGB, 3);
Imgproc.cvtColor(mLogoMilka4, nLogo, Imgproc.COLOR_RGBA2BGR, 3);
Features2d.drawMatches(nGray, vectorFrame, nLogo, vectorMilka4, matchesXXX, nRgba);
Imgproc.cvtColor(nRgba, mRgba, Imgproc.COLOR_RGB2RGBA, 4);
}catch(Exception e){
Log.e("SVK APPLICATION","in Brief "+ e.toString());
}
break;
case SVKApplikaciaActivity.VIEW_MODE_ORB:
//TODO ORB
try{
matcherHamming = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMINGLUT);
matcherHamming.add(orbDescriptors);
matcherHamming.train();// proba
capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
Imgproc.resize(mGray, mGray,new Size(480,320));
orbDetector.detect(mGray, vectorFrame);
orbDescriptor.compute(mGray, vectorFrame, descriptorFrame);
matcherHamming.match(descriptorFrame, matches);
Vector<DMatch> matchesXXX = new Vector<DMatch>();
for (DMatch t : matches)
if(t.distance<BOUNDARY)
matchesXXX.add(t);
Mat nGray = new Mat();
Mat nLogo = new Mat();
Mat nRgba = new Mat();
Imgproc.cvtColor(mGray, nGray, Imgproc.COLOR_RGBA2RGB, 3);
Imgproc.cvtColor(mLogoMilka4, nLogo, Imgproc.COLOR_RGBA2BGR, 3);
Features2d.drawMatches(nGray, vectorFrame, nLogo, vectorMilka4, matchesXXX, nRgba);
Imgproc.cvtColor(nRgba, mRgba, Imgproc.COLOR_RGB2RGBA, 4);
}catch(Exception e){
Log.e("SVK APPLICATION","in ORB "+ e.toString());
}
break;
case SVKApplikaciaActivity.VIEW_MODE_AR:
//TODO AR
break;
}
Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888);
if (Utils.matToBitmap(mRgba, bmp))
return bmp;
bmp.recycle();
return null;
}
@Override
public void run() {
super.run();
synchronized (this) {
// Explicitly deallocate Mats
if (mRgba != null)
mRgba.release();
if (mGray != null)
mGray.release();
if (mIntermediateMat != null)
mIntermediateMat.release();
mRgba = null;
mGray = null;
mIntermediateMat = null;
}
}
}
私はその理由を解決しました。なぜなら、私はサーフオーブの短い記述子を別々に選んだわけではないからです。しかし、ありがとう – Csabi
ええ、私もそれを実現しました。しかし、あなたは別々の/ orb記述子（コード例）を設定していないということはどういう意味ですか、どのような変更を加えましたか？ –
私はfillDB関数を使用せず、すべてのORB/BRIEF/SURF/SIFTに個別の記述子を使用します – Csabi