i wrote the below code to do features matching for list of Mat objects, the problem is at run time i receive the below posted errors, as far as i understood it, i checked the extenstion and the size of the used image and they are .jpg and 538522 except one image is 538520
is the image with different size might cause such error? please help me to fix this issue.
Code:
public static void main(String[] args) {
loadOpenCVLib();
/*Step_1: Feature Detection*/
initFeatureDetector();
/*Step_2: Descriptor Extractor*/
initDescriptorExtractor();
}
private static void initDescriptorExtractor() {
// TODO Auto-generated method stub
descriptorsList = new ArrayList<Mat>();
descriptorsList.add(new Mat());
descriptorsList.add(new Mat());
descriptorsList.add(new Mat());
DescriptorExtractor descripExtractor =
DescriptorExtractor.create(DescriptorExtractor.SIFT);
descripExtractor.compute(matList, keyPointsList, descriptorsList);
//descripExtractor.write(fileName) test this method
//descripExtractor.read(fileName)
}
private static void initFeatureDetector() {
// TODO Auto-generated method stub
matList = new ArrayList<Mat>();
keyPointsList = new ArrayList<MatOfKeyPoint>();
matList.add(path2Mat(path_jf00));
matList.add(path2Mat(path_jf01));
matList.add(path2Mat(path_jf02));
keyPointsList.add(newMatKeyPoints());
keyPointsList.add(newMatKeyPoints());
keyPointsList.add(newMatKeyPoints());
FeatureDetector featsDetect =
FeatureDetector.create(FeatureDetector.SURF);
featsDetect.detect(matList, keyPointsList);
}
private static void loadOpenCVLib() {
// TODO Auto-generated method stub
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
}
private static Mat path2Mat(String path2File) {
// TODO Auto-generated method stub
return Highgui.imread(path2File);
}
private static MatOfKeyPoint newMatKeyPoints() {
return new MatOfKeyPoint();
}
}
Error:
OpenCV Error: Assertion failed (imageCollection.size() ==
pointCollection.size()) in cv::DescriptorExtractor::compute, file
..\..\..\..\opencv\modules\features2d\src\descriptors.cpp, line 74
Exception in thread "main" CvException [org.opencv.core.CvException:
cv::Exception: ..\..\..\..\opencv\modules\features2d
\src\descriptors.cpp:74: error: (-215) imageCollection.size() ==
pointCollection.size() in function cv::DescriptorExtractor::compute
]
at org.opencv.features2d.DescriptorExtractor.compute_1(Native Method)
at
org.opencv.features2d.DescriptorExtractor.compute(DescriptorExtractor.java:140)
at test.FeatsMatch.initDescriptorExtractor(FeatsMatch.java:40)
at test.FeatsMatch.main(FeatsMatch.java:28)
