CODEWITHSUNDEEP
opencvconvolution
spurra
spurra

Reputation: 1025

OpenCV convolution/filter2d with complex kernel

Is there a function in OpenCV which takes a complex matrix as a kernel to convolve/filter an image?

Upvotes: 1

Views: 2257

Answers (2)

trying
trying

Reputation: 101

It may be of use to someone. There is no need to split real and imaginary parts. It suffices instead to use this advice of setting ddepth = -1. Then an example in c++ is:

  //2D complex signal
  std::complex< double> *sgl_data = ...
  int cols = ...
  int rows = ...
  cv::Mat sgl = cv::Mat_< std::complex< double>>( rows, cols, sgl_data);

  //2D complex kernel
  std::complex< double> *knl_data = ...
  int knl_cols = ...
  int knl_rows = ...
  cv::Mat knl = cv::Mat_<std::complex< double>>( knl_rows, knl_cols, knl_data);

  //2D complex filtering on original cv::Mat's without splitting anything
  cv::filter2D( sgl, sgl, -1, knl);

Upvotes: 0

rookiepig
rookiepig

Reputation: 497

This function filter2D() meets your requirement. Pay attention to the int ddepth paratmer, when you apply floating-point kernels on uchar image.

Upvotes: 1

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