Web-enabled image processing operators

Below you find web implementations of various biologically motivated image processing operators, which you can use with your own image material.

• Gabor filter for image processing and computer vision.
  With this program you can (see explanations and examples):
  • visualize Gabor functions,
  • use a Gabor filter and a Gabor-energy filter,
  • perform edge detection,
  • simulate simple and complex cells (visual cortex),
  • extract texture features,
  • simulate non-classical receptive field inhibition or surround suppression (visual cortex),
  • perform contour detection,
  • explain certain visual perception effects.

• Canny edge detector (Canny filter) for image processing and computer vision.
  With this program you can (see explanations and examples):
  • apply the Canny edge detector on-line on your own images,
  • visualize a derivative of a Gaussian function,
  • simulate non-classical receptive field inhibition or surround suppression,
  • perform contour detection.

• Centre-Surround cell (DoG) operator and Dot-pattern selective cell operator.
  This program can be used to (see explanations and examples):
  • visualize Difference of Gaussian (DoG) functions,
  • simulate retinal-ganglion and LGN cells,
  • compute the convolution of an input image with a DoG (center-surround cell responses),
  • detect intensity spots,
  • detect groups of intensity spots,
  • detect dot-pattern texture.

• Grating cell operator for image processing and computer vision.
  This program can be used to (see explanations and examples):
  • Detect grating
  • Visualization of grating subunits
  • Visualization of grating cells