Class VGG


public class VGG extends Feature2D
Class implementing VGG (Oxford Visual Geometry Group) descriptor trained end to end using "Descriptor Learning Using Convex Optimisation" (DLCO) aparatus described in CITE: Simonyan14. desc type of descriptor to use, VGG::VGG_120 is default (120 dimensions float) Available types are VGG::VGG_120, VGG::VGG_80, VGG::VGG_64, VGG::VGG_48 isigma gaussian kernel value for image blur (default is 1.4f) img_normalize use image sample intensity normalization (enabled by default) use_orientation sample patterns using keypoints orientation, enabled by default scale_factor adjust the sampling window of detected keypoints to 64.0f (VGG sampling window) 6.25f is default and fits for KAZE, SURF detected keypoints window ratio 6.75f should be the scale for SIFT detected keypoints window ratio 5.00f should be the scale for AKAZE, MSD, AGAST, FAST, BRISK keypoints window ratio 0.75f should be the scale for ORB keypoints ratio dsc_normalize clamp descriptors to 255 and convert to uchar CV_8UC1 (disabled by default)
  • Constructor Details

    • VGG

      protected VGG(long addr)
  • Method Details

    • __fromPtr__

      public static VGG __fromPtr__(long addr)
    • create

      public static VGG create(int desc, float isigma, boolean img_normalize, boolean use_scale_orientation, float scale_factor, boolean dsc_normalize)
    • create

      public static VGG create(int desc, float isigma, boolean img_normalize, boolean use_scale_orientation, float scale_factor)
    • create

      public static VGG create(int desc, float isigma, boolean img_normalize, boolean use_scale_orientation)
    • create

      public static VGG create(int desc, float isigma, boolean img_normalize)
    • create

      public static VGG create(int desc, float isigma)
    • create

      public static VGG create(int desc)
    • create

      public static VGG create()
    • getDefaultName

      public 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.
      Overrides:
      getDefaultName in class Feature2D
      Returns:
      automatically generated
    • setSigma

      public void setSigma(float isigma)
    • getSigma

      public float getSigma()
    • setUseNormalizeImage

      public void setUseNormalizeImage(boolean img_normalize)
    • getUseNormalizeImage

      public boolean getUseNormalizeImage()
    • setUseScaleOrientation

      public void setUseScaleOrientation(boolean use_scale_orientation)
    • getUseScaleOrientation

      public boolean getUseScaleOrientation()
    • setScaleFactor

      public void setScaleFactor(float scale_factor)
    • getScaleFactor

      public float getScaleFactor()
    • setUseNormalizeDescriptor

      public void setUseNormalizeDescriptor(boolean dsc_normalize)
    • getUseNormalizeDescriptor

      public boolean getUseNormalizeDescriptor()
    • finalize

      protected void finalize() throws Throwable
      Overrides:
      finalize in class Feature2D
      Throws:
      Throwable