gravcenters.m

来自「《Visual C++数字图像识别技术典型案例》之光学字符识别技术源码」· M 代码 · 共 40 行

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 %%       Prof. Sclaroff's CS585 Image avd Video Processing       %%
%%                         Project  ONE                            %%
%%           C H A R A C T E R   R E C O G N I T I O N             %%
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%%                    by Stanislav Rost                    %%
 %%                       ID:  31764117                           %%
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function [ gx, gy ] = gravcenters(matrix, width, height)
% GRAVCENTERS.M
%
% function [ gx, gy ] = gravcenters(matrix, width, height)
%
% Returns the centers of gravity for the matrix "matrix"
% which represents a binary image

% Calculate the area (0-th moment), and also
% M_10(S) and M_01(S)
area = 0;
m10 = 0;
m01 = 0;
for y = 1:height,
	for x = 1:width,
		if matrix(y,x)==1
			area = area + 1;
			m10 = m10 + x;
			m01 = m01 + y;
		end
	end
end

% Figure out the center of gravity
gx = m10/area;
gy = m01/area;