Class RidgeDetectionFilter


  • public class RidgeDetectionFilter
    extends Algorithm
    Applies Ridge Detection Filter to an input image. Implements Ridge detection similar to the one in [Mathematica](http://reference.wolfram.com/language/ref/RidgeFilter.html) using the eigen values from the Hessian Matrix of the input image using Sobel Derivatives. Additional refinement can be done using Skeletonization and Binarization. Adapted from CITE: segleafvein and CITE: M_RF
    • Constructor Detail

      • RidgeDetectionFilter

        protected RidgeDetectionFilter​(long addr)
    • Method Detail

      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx,
                                                  int dy,
                                                  int ksize,
                                                  int out_dtype,
                                                  double scale,
                                                  double delta,
                                                  int borderType)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1
        dy - Order of derivative y, default is 1
        ksize - Sobel kernel size , default is 3
        out_dtype - Converted format for output, default is CV_8UC1
        scale - Optional scale value for derivative values, default is 1
        delta - Optional bias added to output, default is 0
        borderType - Pixel extrapolation method, default is BORDER_DEFAULT SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx,
                                                  int dy,
                                                  int ksize,
                                                  int out_dtype,
                                                  double scale,
                                                  double delta)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1
        dy - Order of derivative y, default is 1
        ksize - Sobel kernel size , default is 3
        out_dtype - Converted format for output, default is CV_8UC1
        scale - Optional scale value for derivative values, default is 1
        delta - Optional bias added to output, default is 0 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx,
                                                  int dy,
                                                  int ksize,
                                                  int out_dtype,
                                                  double scale)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1
        dy - Order of derivative y, default is 1
        ksize - Sobel kernel size , default is 3
        out_dtype - Converted format for output, default is CV_8UC1
        scale - Optional scale value for derivative values, default is 1 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx,
                                                  int dy,
                                                  int ksize,
                                                  int out_dtype)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1
        dy - Order of derivative y, default is 1
        ksize - Sobel kernel size , default is 3
        out_dtype - Converted format for output, default is CV_8UC1 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx,
                                                  int dy,
                                                  int ksize)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1
        dy - Order of derivative y, default is 1
        ksize - Sobel kernel size , default is 3 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx,
                                                  int dy)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1
        dy - Order of derivative y, default is 1 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth,
                                                  int dx)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1
        dx - Order of derivative x, default is 1 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create​(int ddepth)
        Create pointer to the Ridge detection filter.
        Parameters:
        ddepth - Specifies output image depth. Defualt is CV_32FC1 SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • create

        public static RidgeDetectionFilter create()
        Create pointer to the Ridge detection filter. SEE: Sobel, threshold, getStructuringElement, morphologyEx.( for additional refinement)
        Returns:
        automatically generated
      • getRidgeFilteredImage

        public void getRidgeFilteredImage​(Mat _img,
                                          Mat out)
        Apply Ridge detection filter on input image.
        Parameters:
        _img - InputArray as supported by Sobel. img can be 1-Channel or 3-Channels.
        out - OutputAray of structure as RidgeDetectionFilter::ddepth. Output image with ridges.