用于从多个帧和裁剪面检测面部的matlab代码？

Question

我编写了用于从视频中检测人脸的matlab代码。但它是从单帧检测人脸。它显示单帧的裁剪人脸。我想从多个帧中检测并裁剪人脸。这是我的代码< /强>

clc;
clear all;

%read frames from video
obj=VideoReader('vtu.avi');

 img = read(obj,1);
 figure(1),imshow(img);

 %detect face using vision.CascadeObjectDetector
 FaceDetect = vision.CascadeObjectDetector; 
   BB = step(FaceDetect,img);
   figure(2),imshow(img);

   for i = 1:size(BB,1)

        rectangle('Position',BB(i,:),'LineWidth',3,'LineStyle','-','EdgeColor','r');
   end

    %crop faces 
     for i = 1:size(BB,1)
        J= imcrop(img,BB(i,:));
        figure(3),subplot(2,2,i);imshow(J);
     end

Answer 1

你需要一个额外的循环：

for index=1:1:obj.numberofframes
    img = read(mov,index);
    ... ...
    % do face detection and crop for 'img' here
    ... ...
end