Advanced Texture

Pre-Processing > Adjust Texture

Uses advanced algorithms to highlight various forms of texture in an image. Options include measuring aspects of each pixel’s Hessian matrix [1] and Gabor filters [2].

1. Type

• Module:
  

• Trace:
  
  Note that the trace of the hessian matrix is the same as the laplacian operator.

• Determinant:
  
  This filter is well-suited to finding corners.

• First Eigen:
  

• Second Eigen:
  

• Orientation:
  

• Eigen Difference:
  

• Square Eigen Difference:
  

• Gabor:
  

2. Radius

Radius (in pixels) to consider about each pixel to calculate the specified filter.

References

[1] D. Eberly, “Ridges in Image and Data Analysis”, Kluwer Academic Publishers, 1996.

[2] Fogel, I.; Sagi, D. (1989). “Gabor filters as texture discriminator”. Biological Cybernetics. 61 (2).