bound2four.m ( File view )

  • By yueqiaohuayuan 2014-11-17
  • View(s):3508
  • Download(s):7
  • Point(s): 3
			function rc_new = bound2four(rc)
%BOUND2FOUR Convert 8-connected boundary to 4-connected boundary.
%   RC_NEW = BOUND2FOUR(RC) converts an eight-connected boundary to a
%   four-connected boundary.  RC is a P-by-2 matrix, each row of
%   which contains the row and column coordinates of a boundary
%   pixel.  BOUND2FOUR inserts new boundary pixels wherever there is
%   a diagonal connection.

%   Copyright 2002-2004 R. C. Gonzalez, R. E. Woods, & S. L. Eddins
%   Digital Image Processing Using MATLAB, Prentice-Hall, 2004
%   $Revision: 1.4 $  $Date: 2003/11/21 14:20:21 $

if size(rc, 1) > 1
   % Phase 1: remove diagonal turns, one at a time until they are all gone.
   done = 0;
   rc1 = [rc(end - 1, :); rc];
   while ~done
      d = diff(rc1, 1);
      diagonal_locations = all(d, 2);
      double_diagonals = diagonal_locations(1:end - 1) & ...
          (diff(diagonal_locations, 1) == 0);
      double_diagonal_idx = find(double_diagonals);
      turns = any(d(double_diagonal_idx, :) ~= ...
                  d(double_diagonal_idx + 1, :), 2);
      turns_idx = double_diagonal_idx(turns);
      if isempty(turns_idx)
         done = 1;
      else
         first_turn = turns_idx(1);
         rc1(first_turn + 1, :) = (rc1(first_turn, :) + ...
                                   rc1(first_turn + 2, :)) / 2;
         if first_turn == 1
            rc1(end, :) = rc1(2, :);
         end
      end
   end
   rc1 = rc1(2:end, :);
end

% Phase 2: insert extra pixels where there are diagonal connections.

rowdiff = diff(rc1(:, 1));
coldiff = diff(rc1(:, 2));

diagonal_locations = rowdiff & coldiff
...
...
(Please download the complete source code to view)
			
...
Expand> <Close

Want complete source code? Download it here

Point(s): 3

Download
0 lines left, continue to read
Sponsored links

File list

Tips: You can preview the content of files by clicking file names^_^
Name Size Date
01.97 kB
0_Read_Me_First.txt5.00 kB2012-02-29|09:51
Contents.m5.98 kB2012-02-29|09:51
Readme.m5.30 kB2012-02-29|09:51
adpmedian.m1.54 kB2012-02-29|09:51
average.m651.00 B2012-02-29|09:51
bayesgauss.m2.96 kB2012-02-29|09:51
bound2eight.m2.99 kB2012-02-29|09:51
bound2four.m2.42 kB2012-02-29|09:51
bound2im.m2.17 kB2012-02-29|09:51
boundaries.m5.64 kB2012-02-29|09:51
bsubsamp.m3.87 kB2012-02-29|09:51
changeclass.m592.00 B2012-02-29|09:51
colorgrad.m2.30 kB2012-02-29|09:51
colorseg.m2.37 kB2012-02-29|09:51
compare.m1.15 kB2012-02-29|09:51
connectpoly.m1.02 kB2012-02-29|09:51
conwaylaws.m799.00 B2012-02-29|09:51
covmatrix.m977.00 B2012-02-29|09:51
dftcorr.m687.00 B2012-02-29|09:51
dftfilt.m882.00 B2012-02-29|09:51
dftuv.m736.00 B2012-02-29|09:51
diameter.m6.47 kB2012-02-29|09:51
endpoints.m874.00 B2012-02-29|09:51
entropy.m1.00 kB2012-02-29|09:51
fchcode.m8.55 kB2012-02-29|09:51
frdescp.m1.42 kB2012-02-29|09:51
fwtcompare.m992.00 B2012-02-29|09:51
gmean.m447.00 B2012-02-29|09:51
gscale.m2.04 kB2012-02-29|09:51
histroi.m920.00 B2012-02-29|09:51
hough.m2.64 kB2012-02-29|09:51
houghlines.m2.82 kB2012-02-29|09:51
houghpeaks.m2.65 kB2012-02-29|09:51
houghpixels.m1.02 kB2012-02-29|09:51
hpfilter.m1.23 kB2012-02-29|09:51
hsi2rgb.m1.94 kB2012-02-29|09:51
huff2mat.m2.46 kB2012-02-29|09:51
huffman.m2.82 kB2012-02-29|09:51
ice.fig45.71 kB2012-02-29|09:51
ice.m26.30 kB2012-02-29|09:51
ice_stand_alone.m46.55 kB2012-02-29|09:51
ifrdescp.m1.38 kB2012-02-29|09:51
ifwtcompare.m1.12 kB2012-02-29|09:51
im2jpeg.m2.90 kB2012-02-29|09:51
im2jpeg2k.m3.97 kB2012-02-29|09:51
imnoise2.m4.20 kB2012-02-29|09:51
imnoise3.m2.12 kB2012-02-29|09:51
improd.m791.00 B2012-02-29|09:51
imratio.m1.30 kB2012-02-29|09:51
imstack2vectors.m1.83 kB2012-02-29|09:51
intline.m1.20 kB2012-02-29|09:51
intrans.m3.25 kB2012-02-29|09:51
invmoments.m3.24 kB2012-02-29|09:51
jpeg2im.m2.41 kB2012-02-29|09:51
jpeg2k2im.m1.90 kB2012-02-29|09:51
lpc2mat.m1.42 kB2012-02-29|09:51
lpfilter.m1.44 kB2012-02-29|09:51
mahalanobis.m1.97 kB2012-02-29|09:51
manualhist.m1.75 kB2012-02-29|09:51
mat2huff.m2.75 kB2012-02-29|09:51
mat2lpc.m1.28 kB2012-02-29|09:51
minperpoly.m7.15 kB2012-02-29|09:51
paddedsize.m1.29 kB2012-02-29|09:51
pixeldup.m950.00 B2012-02-29|09:51
polyangles.m6.14 kB2012-02-29|09:51
princomp.m2.88 kB2012-02-29|09:51
quantize.m1.33 kB2012-02-29|09:51
randvertex.m1.15 kB2012-02-29|09:51
regiongrow.m1.66 kB2012-02-29|09:51
rgb2hsi.m1.46 kB2012-02-29|09:51
rgbcube.m1.98 kB2012-02-29|09:51
signature.m4.45 kB2012-02-29|09:51
specxture.m2.57 kB2012-02-29|09:51
spfilt.m3.78 kB2012-02-29|09:51
splitmerge.m4.13 kB2012-02-29|09:51
statmoments.m1.72 kB2012-02-29|09:51
statxture.m1.55 kB2012-02-29|09:51
strsimilarity.m1.78 kB2012-02-29|09:51
subim.m713.00 B2012-02-29|09:51
twodsin.m1.04 kB2012-02-29|09:51
twomodegauss.m1.16 kB2012-02-29|09:51
unravel.dll7.00 kB2012-02-29|09:51
unravel.m967.00 B2012-02-29|09:51
unravel.mexaxp24.00 kB2012-02-29|09:51
unravel.mexglx18.97 kB2012-02-29|09:51
unravel.mexhpux12.00 kB2012-02-29|09:51
unravel.mexmac8.68 kB2012-02-29|09:51
unravel.mexrs62.71 kB2012-02-29|09:51
unravel.mexsg24.44 kB2012-02-29|09:51
unravel.mexsol8.54 kB2012-02-29|09:51
vistformfwd.m1.66 kB2012-02-29|09:51
wave2gray.m4.67 kB2012-02-29|09:51
waveback.m4.52 kB2012-02-29|09:51
wavecopy.m940.00 B2012-02-29|09:51
wavecut.m1.06 kB2012-02-29|09:51
wavefast.m4.14 kB2012-02-29|09:51
wavefilter.m4.77 kB2012-02-29|09:51
wavepaste.m1.04 kB2012-02-29|09:51
wavework.m3.45 kB2012-02-29|09:51
wavezero.m696.00 B2012-02-29|09:51
x2majoraxis.m3.59 kB2012-02-29|09:51
...
Sponsored links

bound2four.m (160.12 kB)

Need 3 point
Your Point(s)

Your Point isn't enough.

Get point immediately by PayPal

More(Debit card / Credit card / PayPal Credit / Online Banking)

Submit your source codes. Get more point

LOGIN

Don't have an account? Register now
Need any help?
Mail to: support@codeforge.com

切换到中文版?

CodeForge Chinese Version
CodeForge English Version

Where are you going?

^_^"Oops ...

Sorry!This guy is mysterious, its blog hasn't been opened, try another, please!
OK

Warm tip!

CodeForge to FavoriteFavorite by Ctrl+D