我编写了用于从视频中检测人脸的Matlab代码。但它只能从单个帧中检测出人脸,并显示裁剪后的人脸图像。我想要从多个帧中检测和裁剪人脸。以下是我的代码:
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
img
,只需执行此步骤。 - herohuyongtao