• public class LATCH
    extends Feature2D
    latch Class for computing the LATCH descriptor. If you find this code useful, please add a reference to the following paper in your work: Gil Levi and Tal Hassner, "LATCH: Learned Arrangements of Three Patch Codes", arXiv preprint arXiv:1501.03719, 15 Jan. 2015 LATCH is a binary descriptor based on learned comparisons of triplets of image patches. bytes is the size of the descriptor - can be 64, 32, 16, 8, 4, 2 or 1 rotationInvariance - whether or not the descriptor should compansate for orientation changes. half_ssd_size - the size of half of the mini-patches size. For example, if we would like to compare triplets of patches of size 7x7x then the half_ssd_size should be (7-1)/2 = 3. sigma - sigma value for GaussianBlur smoothing of the source image. Source image will be used without smoothing in case sigma value is 0. Note: the descriptor can be coupled with any keypoint extractor. The only demand is that if you use set rotationInvariance = True then you will have to use an extractor which estimates the patch orientation (in degrees). Examples for such extractors are ORB and SIFT. Note: a complete example can be found under /samples/cpp/tutorial_code/xfeatures2D/latch_match.cpp
    • Constructor Detail

      • LATCH

        protected LATCH​(long addr)
    • Method Detail

      • __fromPtr__

        public static LATCH __fromPtr__​(long addr)
      • create

        public static LATCH create​(int bytes,
                                   boolean rotationInvariance,
                                   int half_ssd_size,
                                   double sigma)
      • create

        public static LATCH create​(int bytes,
                                   boolean rotationInvariance,
                                   int half_ssd_size)
      • create

        public static LATCH create​(int bytes,
                                   boolean rotationInvariance)
      • create

        public static LATCH create​(int bytes)
      • create

        public static LATCH create()
      • setBytes

        public void setBytes​(int bytes)
      • getBytes

        public int getBytes()
      • setRotationInvariance

        public void setRotationInvariance​(boolean rotationInvariance)
      • getRotationInvariance

        public boolean getRotationInvariance()
      • setHalfSSDsize

        public void setHalfSSDsize​(int half_ssd_size)
      • getHalfSSDsize

        public int getHalfSSDsize()
      • setSigma

        public void setSigma​(double sigma)
      • getSigma

        public double getSigma()
      • getDefaultName

        public java.lang.String getDefaultName()
        Description copied from class: Algorithm
        Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.
        getDefaultName in class Feature2D
        automatically generated
      • finalize

        protected void finalize()
                         throws java.lang.Throwable
        finalize in class Feature2D