/**
* For some features, there are pre-made implementations of DetectDescribePoint. This has only
* been done in situations where there was a performance advantage or that it was a very common
* combination.
*/
public static <T extends ImageSingleBand, D extends TupleDesc>
DetectDescribePoint<T, D> createFromPremade(Class<T> imageType) {
return (DetectDescribePoint)
FactoryDetectDescribe.surfStable(
new ConfigFastHessian(1, 2, 200, 1, 9, 4, 4), null, null, ImageFloat32.class);
// note that SIFT only supports ImageFloat32
// if( imageType == ImageFloat32.class )
// return (DetectDescribePoint)FactoryDetectDescribe.sift(null,new
// ConfigSiftDetector(2,0,200,5),null,null);
// else
// throw new RuntimeException("Unsupported image type");
}
/**
* Any arbitrary implementation of InterestPointDetector, OrientationImage, DescribeRegionPoint
* can be combined into DetectDescribePoint. The syntax is more complex, but the end result is
* more flexible. This should only be done if there isn't a pre-made DetectDescribePoint.
*/
public static <T extends ImageSingleBand, D extends TupleDesc>
DetectDescribePoint<T, D> createFromComponents(Class<T> imageType) {
// create a corner detector
Class derivType = GImageDerivativeOps.getDerivativeType(imageType);
GeneralFeatureDetector corner =
FactoryDetectPoint.createShiTomasi(new ConfigGeneralDetector(1000, 5, 1), false, derivType);
InterestPointDetector detector =
FactoryInterestPoint.wrapPoint(corner, 1, imageType, derivType);
// describe points using BRIEF
DescribeRegionPoint describe =
FactoryDescribeRegionPoint.brief(new ConfigBrief(true), imageType);
// Combine together.
// NOTE: orientation will not be estimated
return FactoryDetectDescribe.fuseTogether(detector, null, describe);
}
@Override
public DetectDescribePoint<ImageFloat32, SurfFeature> createDetDesc() {
return FactoryDetectDescribe.sift(null, new ConfigSiftDetector(2, 0, 500, 5), null, null);
}
