code for gender classification using mallab:ERROR

hi!

im new, and a complete newbie in the realm of DIP, recently received a project from my supervisor ; gender classification through matlab!

so its quite simple just checks if the guy has a beard then output man and if not then output women(very simple because its a small project and we have zero background in DIP)

here is the code:

image=imread('C:\Users\mustafa\Downloads\scarlett_johansson-2.jpg');

R = image(:,:,1);

G = image(:,:,2);

B = image(:,:,3);

z=imshow(image);

resizeImage = imresize(image,[120 160]);

R = resizeImage(:,:,1);

G = resizeImage(:,:,2);

B = resizeImage(:,:,3);

y=imshow(image);

int(sym('low'));

int(sym('high'));

for i=60:1:119

   for j=0:1:159

      if((R(i,j)<=0) && R(i,j)<=52 && (G(i,j)<=0) && G(i,j)<=52 && (B(i,j)<=0) && B(i,j)<=52) 

          low=low+1;

      else

          high=high+1;

      end

end

end

if((high < low))

      display('man')

else
    display ('women')

end

it keeps giving me this error . ."Subscript indices must either be real positive integers or logicals." on the if loop . .please help me out!! . . submission date is quite close!!

Answer 1

[Image Analyst]

You can't start j out at 0. MATLAB is one based.

Don't use image as the name of your image variable. image() is a built-in function, so don't use it as a variable name. Also switch the order of your for loops to increase speed:

[rows, columns, numberOfColorChannels] = size(rgbImage);
for col = 1 : columns
  for row = 60 : 119
    if R(row, column) .........

or better yet, just get rid of the for loops and vectorize the thing:

lowMask = (R<=0) && R<=52 && (G<=0) && G<=52 && (B<=0) && B<=52)
low = sum(lowMask(:))
high = rows * columns - low;

[Image Analyst]

By the way, what do men without beards think of your code that classifies them as women?

[Walter Roberson]

For that matter, what do the women with beards think of your code that classifies them as men? (The women with beards that I have personally met have detested their beards but kept them for family or job reasons, but I have communicated with or read about other women who were happy with their beards.)