gusucode.com > 《MATLAB图像与视频处理实用案例详解》代码 > 《MATLAB图像与视频处理实用案例详解》代码/第 20 章 基于帧间差法进行视频目标检测/Video2Images.m

    function Video2Images(videoFilePath)
clc;
if nargin < 1
    videoFilePath = fullfile(pwd, 'video/video.avi');
end
nFrames = GetVideoImgList(videoFilePath);

function nFrames = GetVideoImgList(videoFilePath)
xyloObj = VideoReader(videoFilePath);

nFrames = xyloObj.NumberOfFrames;
vidHeight = xyloObj.Height;
vidWidth = xyloObj.Width;

[pathstr, name, ext] = fileparts(videoFilePath);

video_imagesPath = fullfile(pwd, sprintf('%s_images', name));
if ~exist(video_imagesPath, 'dir')
    mkdir(video_imagesPath);
end
files = dir(fullfile(video_imagesPath, '*.jpg'));
if length(files) == nFrames
    return;
end
h = waitbar(0, '', 'Name', '获取视频图像序列...');
steps = nFrames;
for step = 1 : nFrames
    temp = read(xyloObj, step);
    temp_str = sprintf('%s\\%04d.jpg', video_imagesPath, step);
    imwrite(temp, temp_str);
    pause(0.01);
    waitbar(step/steps, h, sprintf('已处理：%d%%', round(step/nFrames*100)));
end
close(h)