conv_rgb.m

Face recognition using webcam and this data.if the person exist means its gives the serial data out.

function [x] = conv_rgb(x)
if (size(x,3)>1)%if RGB image make gray scale
    try
        x=rgb2gray(x);%image toolbox dependent
    catch
        x=sum(double(x),3)/3;%if no image toolbox do simple sum
    end
end
x=double(x);%make sure the input is double format