Do you have any method of reading a resistor value (resistor colour codes) using image processing techniques in MATLAB? Please

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color

currently i am working with project on colour detection of resistor using image processing.But i am unable to get the results for all images.Pleae help me.

What I have tried:

I have treid the following code....



clc;
close all;
clear all;
[fname path]=uigetfile('*.*','enter an image');
fname=strcat(path,fname);
RGB=imread(fname);
imshow(RGB);
matrixSize=size(RGB);
Y=matrixSize(1,1);
X=matrixSize(1,2);
x1 = Y;
Y=Y/2;
Y=round(Y);

for i=1:x1
for t=1:X
if RGB(i,t)<255
binary(i,t)=0;
else
binary(i,t)=255;
end
end
end
figure, imshow(binary)
for i=1:X
if RGB(Y,i)==0 && RGB(Y,i,2)==0 && RGB(Y,i,3)==0 %stores 65 for black
Temp(i,1)='A';
else
Temp(i,1)=0;
end
end

for i=1:X
if RGB(Y,i)>=185 && RGB(Y,i,2)>=122 && RGB(Y,i,3)<=87
Temp(i,1)='B'; %stores 66 for brown
end
end

for i=1:X
if RGB(Y,i)>=200 && RGB(Y,i,2)<=50 && RGB(Y,i,3)<=50
Temp(i,1)='R'; %stores 82 for red
end
end

for i=1:X
if RGB(Y,i)>=240 && RGB(Y,i,2)>=230 && RGB(Y,i,3)<=10
Temp(i,1)='Y'; %stores 89 for yellow
end
end

for i=1:X
if RGB(Y,i)<=140 && RGB(Y,i,2)<=140 && RGB(Y,i,3)>=200
Temp(i,1)='D'; %stores 68 for blue
end
end

for i=1:X
if RGB(Y,i)==163 && RGB(Y,i,2)==73 &&RGB(Y,i,3)==164
Temp(i,1)='V'; %stores 86 for violet
end
end

for i=1:X
if RGB(Y,i)==0 && RGB(Y,i,2)==255 &&RGB(Y,i,3)==0
Temp(i,1)='G'; %stores 72 for green
end
end

j=1;

for i=1:X
if Temp(i,1)~=0
colorArray(1,j)=Temp(i,1);
j=j+1;

end
end



colorArray(1,1)= colorArray(1,floor(j/6)); %for 1st band
colorArray(1,2)= colorArray(1,floor(j/3)+1); %for 2nd band
colorArray(1,3)= colorArray(1,floor(j-2)); %for 3rd band
i=1;
for i=1:3
if colorArray(1,i)==65 %black
colorArray(1,i)=0;
disp('black colour')
end

if colorArray(1,i)==66 %brown
colorArray(1,i)=1;
disp('brown colour')
end

if colorArray(1,i)==82 %red
colorArray(1,i)=2;
disp('red colour')
end

if colorArray(1,i)==79 %orange
colorArray(1,i)=3;
disp('orange colour')
end

if colorArray(1,i)==89 %yellow
colorArray(1,i)=4;
disp('yellow colour')
end

if colorArray(1,i)==71 %green
colorArray(1,i)=5;
disp('green colour')
end

if colorArray(1,i)==68 %blue
colorArray(1,i)=6;
disp('blue colour')
end

if colorArray(1,i)==86 %violet
colorArray(1,i)=7;
disp('violet colour')
end

if colorArray(1,i)==72 %grey
colorArray(1,i)=8;
disp('grey colour')
end

if colorArray(1,i)==87 %white
colorArray(1,i)=9;
disp('white colour')
end
end

hundreds=power(10,colorArray(1,3));
tens=colorArray(1,1)*10;
ones=colorArray(1,2)*1;

resistorValue=(tens+ones)*hundreds


figure, imshow(fname);