can some one help to figure out what is wrong with my code and so far help me to find the mouth detection , yawning detection and also the head rotation. please

clc;
clear all;
close all;
[vid_name,vid_folder]= uigetfile('*.*','select video');
vid_path=[vid_folder,vid_name];
faceDetector1 = vision.CascadeObjectDetector('EyePairSmall');
faceDetector2 = vision.CascadeObjectDetector('Mouth');
faceDetector3 = vision.CascadeObjectDetector;
videoFileReader = vision.VideoFileReader(vid_path);
while~isDone(videoFileReader)
  videoframe=step(videoFileReader);  %¶ÁÈ¡ÊÓƵÖеÄͼÏñ
  cord_face= step(faceDetector3,videoframe);%¶¨Î»Á³²¿ 
  [x,y]=size(cord_face);
  k=1;
  for i=2:x
    if (cord_face(i,3)>=350) k=i;end;
  end  
  IFaces = insertObjectAnnotation(videoframe, 'rectangle', cord_face(k,:), 'Face');
  figure;
  imshow(IFaces);%axis on;
  Face=imcrop(IFaces,cord_face(k,:));
  figure;
  imshow(Face),axis on;
  [x,y]=size(Face);
  [x0,y0]=findeye(Face);
  cord_eye=[0,x0,y,y0];
  Face_eye=imcrop(Face,cord_eye);
   cord_mouth=step(faceDetector2,Face);        %¶¨Î»×ì°Í
  if (~isempty(cord_mouth))
    k=1;
    [x0,y0]=size(cord_mouth);
    for i=2:x0
      if (cord_mouth(i,2)>=cord_mouth(k,2)) 
          k=i;
      end;
    end 
    Face_mouth=insertObjectAnnotation(Face, 'rectangle', cord_mouth(k,:), 'Mouth');
    figure;
   imshow(Face_mouth);
    mouth=imcrop(Face,cord_mouth(k,:));
   imshow(mouth);
  end
  pause(0.1);
end

[Dima Lisin]

Can you please explain what kind of problems you are having? Do you get an error message? Does the output look wrong? Can you post the output?

[Diallo Alhousseny]

now I have seen the problem and I found the mouth , now I want to find the yawning and the head heard rotation. I need some advices and so far help me to figure out.