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% By lyqmath @ Matlab中文论坛
clc; clear all; close all;
avi = mmreader(samplevideo.avi);
for i = 1 : avi.NumberOfFrames
img = read(avi, i);
pixels(:, :, :, i) = img;
figure(1); imshow(img, []);
text(1, 15, sprintf(原视频:%d帧 By lyqmath, i), FontWeight, Bold, Color, r);
end
tracking(pixels);
function d = tracking(video)
if ischar(video)
% 载入视频数据
for i = 1 : avi.NumberOfFrames
img = read(avi, i);
pixels(:, :, :, i) = img;
end
else
pixels = video;
end
nFrames = size(pixels, 4);
rows = size(pixels, 1);
cols = size(pixels, 2);
% 转换成灰度图像
for i = 1 : nFrames
pixel(:, :, i) = (rgb2gray(pixels(:,:,:,i)));
end
for i = 2 : nFrames
d(:, :, i) = (abs(pixel(:,:,i) - pixel(:,:,i-1)));
bw(:, :, i) = im2bw(d(:, :, i), 0.2);
% 寻找上下边界
cou=1;
for h = 1:rows
for w = 1:cols
if bw(h, w, i) 0.5
bottomEdge = h;
if cou == 1
topEdge = bottomEdge;
end
cou = cou+1;
break;
end
end
end
% 寻找左右边界
coun=1;
for w = 1:cols
for h = 1:rows
if bw(h, w, i) 0.5
rightEdge = w;
if coun == 1
leftEdge = rightEdge;
coun = coun+1;
end
break;
end
end
end
% 矩形框生成
wd = rightEdge-leftEdge;
hg = bottomEdge-topEdge;
widt = wd/2;
heit = hg/2;
cenx = leftEdge+widt;
ceny = topEdge+heit;
% 显示并标记
figure(1);
imshow(pixels(:, :, :, i), []);
hold on
rectangle(Position,[leftEdge topEdge wd hg], EdgeColor, r, LineWidth, 2);
plot(cenx, ceny, ko, MarkerFaceColor, y, MarkerSize, 20, LineWidth, 2);
text(1, 15, sprintf(跟踪视频:%d帧 By lyqmath, i), FontWeight, Bold, Color, r);
hold off
End
% By lyqmath
clc; clear all; close all;% 原始视频targetavi = traffic.avi;% 检测结果视频resultavi = c:\\result.a
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