Sup-Generating Operator

Building the Cantata Workspace


To build a workspace to experiment with the sup-generating operator:
  1. Select and Display the image $MMACH/viff/supgen.xv using the operators User Defined, Expand and Display Image. Expand is used to make the pixels look larger as the original image is very small.

  2. Build the two Structuring Elements A and B using two 3x3 Str.El. operators.

  3. Use operators Erosion, Anti-Dilation and Intersection

Exercises

  1. Repeat the same experiment to detect the pixels that have all its 4-connected neighbors.

  2. Repeat the same experiment to detect the pixels that have at least one of its 4-connected neighbors. (Hint, use the operator Rotate Str. El.)

  3. Repeat the same experiment to detect the end points of the objects. (Hint, use the operator Rotate Str. El.)

  4. Repeat the same experiment to detect the tripple points. (Hint, use the operator Rotate Str. El.)

  5. Using the image M.xv as the left extremity of the closed interval which characterizes the supgen operator, create a marker for the letter M that separates this letters of the other letters in the image letters.xv.