How can i resolve the light issue in image processing??

i am writing a code for finding eye blink of a person by using the value of person closed and open eye.... for this i am using a webcam for finding user realtime images but when i calculating a value light issue(sunlight etc ) make my value wrong... please help me to control the light issue in my project.... here is my code...

das = input('Do you want to start Driver Assistance System Y/N ', 's');
das;    
vid = videoinput('winvideo', 2, 'YUY2_640x480');

   set(vid, 'ReturnedColorSpace', 'RGB');
   preview(vid);
   disp('please open your eyes and press Enter.');
   pause;
   img = getsnapshot(vid);
   faceDetector = vision.CascadeObjectDetector;   
   bboxes = step(faceDetector, img);
   img = imcrop(img,bboxes);
   pic=img; 
   imshow(pic)
   imframe=30;
   pic1=rgb2gray(pic);
   se=strel('square',1);
   %bw = edge(pic1,'canny',0.01);
   eye_dil=imdilate(pic1,se);
    d=imcrop(eye_dil,[1 49 250 105]);
   imshow(d)
   sumd(1,imframe)=sum(sum(d)); 
   sumc1=sum(sum(d))
   disp('please close your eyes and press Enter.');
   pause;
   img = getsnapshot(vid);
   bboxes = step(faceDetector, img);
   img = imcrop(img,bboxes);
   pic=img; 
   imshow(pic)
   imframe=30;
   pic1=rgb2gray(pic);
   se=strel('square',1);
   %bw = edge(pic1,'canny',0.01);
   eye_dil=imdilate(pic1,se);
   d=imcrop(eye_dil,[1 49 250 105]);
   imshow(d)
   sumd(1,imframe)=sum(sum(d)); 
   sumc2=sum(sum(d))
   s=sumc2-sumc1
   w=s/3;
   x=sumc2+w
   q=20 ;
   for i=1:q 

   pause(1);
   img = getsnapshot(vid);
   bboxes = step(faceDetector, img);
   if bboxes ~= 0
   img = imcrop(img,bboxes);
   pic=img; 
   imframe=30;
   pic1=rgb2gray(pic);
   se=strel('square',1);
   %bw = edge(pic1,'canny',0.01);
   eye_dil=imdilate(pic1,se);
   d=imcrop(eye_dil,[1 49 250 105]);
   sumd(1,imframe)=sum(sum(d)); 
   sumc3=sum(sum(d))
   pause(1);
   img = getsnapshot(vid);
   bboxes = step(faceDetector, img);
   if bboxes ~= 0
   img = imcrop(img,bboxes);
   pic=img; 
   imframe=30;
   pic1=rgb2gray(pic);
   se=strel('square',1);
   %bw = edge(pic1,'canny',0.01);
   eye_dil=imdilate(pic1,se);
   d=imcrop(eye_dil,[1 49 250 105]);
   sumd(1,imframe)=sum(sum(d)); 
   sumc4=sum(sum(d))

   if sumc3 < x && sumc4 < x
       disp('eyes closed')

   end
   end
   end
   end
   end
   end

[Walter Roberson]

I think you have far too many "end" statements. You need to take your program and tell the MATLAB editor to apply smart indentation to it.

[Talha Ahmad]

how it can apply?

[Image Analyst]

With the cursor in the editor window, type control-a (to select all the text) then type control-i (to properly indent everything).

Answer 1

[Image Analyst]

See my answer in your related question: http://www.mathworks.com/matlabcentral/answers/222881-please-help-me-in-coding-to-find-a-white-color-in-image-and-also-find-the-value-of-white-color#comment_290712