31-Dec-2024 18:52:46

maple_data_test():
  MATLAB/Octave version 6.4.0
  maple_data() determines the boundary of the image
  of a maple leaf.

maple_data():
  Extract a polygonal boundary between a black exterior
  and a white interior, from an image of a maple leaf.

  Apply im=imread ( maple_bw.png ) to extract image data from file
  size(im) = 387 rows by 391 columns using 3 colors.
  im=im2bw(im,0.5) converts image to black and white (1 color).
   387   391
  im=imcomplement(im) converts image to black around white.
  Exact relative area =       0.423264
  imshow(im) displays the image.
  bcell=bwboundaries(im) traces ALL the boundaries.
  b=bcell{1} extracts the first (and only, we hope) boundary.

  b(:,1)=387+1- b(:,1)) corrects reflected X coordinates.

  Polygonal boundary involves 1776 vertices.

maple_data_plot():
  Display a plot of the boundary of the maple leaf.

  Graphics saved as "maple_data.png"
  Boundary vertices written to file "maple_data.txt"

maple_data_test():
  Normal end of execution.

31-Dec-2024 18:52:46