基于imcrop，裁剪人脸视频

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识别人脸并裁剪视频。

裁剪视频通过imcrop实现，bbox通过人脸识别自动获取

function [outfilename,fr] = FirstFrameFaceDet(infilename,handles)
%第一步：检测参考帧
% Create a cascade detector object.
addpath(genpath('.'));
global infilename;infilename='cdd.avi'
faceDetector = vision.CascadeObjectDetector();
% Read a video frame and run the detector. data\cdd.mp4
vidFile =  fullfile('data', infilename);
outfilename = [infilename(1:end-4),'_1st.avi'];
% result\cdd_1st.avi
outName =  fullfile('result',outfilename);
vid = VideoReader(vidFile);
fr = round(vid.FrameRate);
len = vid.NumberOfFrames;
% temp = struct('cdata', zeros(vidHeight, vidWidth, nChannels, 'uint8'), 'colormap', []);
% temp.cdata = read(vid, 1);
% [videoFrame,~] = frame2im(temp);
videoFileReader = vision.VideoFileReader(vidFile);
videoFrame      = step(videoFileReader);
%人脸识别&#

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