conwaylaws.m

数字图象处理冈萨雷斯MATLAB源程序工具箱,包含数字图像处理各种算法

function out = conwaylaws(nhood)
%CONWAYLAWS Applies Conway's genetic laws to a single pixel.
%   OUT = CONWAYLAWS(NHOOD) applies Conway's genetic laws to a single
%   pixel and its 3-by-3 neighborhood, NHOOD. 

%   Copyright 2002-2004 R. C. Gonzalez, R. E. Woods, & S. L. Eddins
%   Digital Image Processing Using MATLAB, Prentice-Hall, 2004
%   $Revision: 1.4 $  $Date: 2003/04/23 01:36:41 $

num_neighbors = sum(nhood(:)) - nhood(2, 2);
if nhood(2, 2) == 1
   if num_neighbors <= 1
      out = 0; % Pixel dies from isolation.
   elseif num_neighbors >= 4
      out = 0; % Pixel dies from overpopulation.
   else
      out = 1; % Pixel survives.
   end
else
   if num_neighbors == 3
      out = 1; % Birth pixel.
   else
      out = 0; % Pixel remains empty.
   end
end