檢測和跟蹤移動車輛

Question

我正在做一個關於「車輛跟蹤」的項目。我正在嘗試開發一個能夠實時運行的代碼，並能夠檢測到正在接近交叉路口的汽車。 Ι減去兩個連續幀，然後thresholding.Implement形態學關閉，然後我找到移動車。我的問題是我無法檢測到黑色的汽車。我真的很感謝，如果你給我一些指導方針，以成功完成這個項目。

%Code for tracking 
vid = videoinput('winvideo', '1', 'RGB24_640x360'); 
set(vid,'ReturnedColorSpace','rgb'); 
set(vid,'TriggerRepeat',Inf); 
src = getselectedsource(vid); 
src.FocusMode = 'manual'; 
%pause(0.02); 
[i rect]=imcrop(getsnapshot(vid)); 
set(vid,'ROIPosition',rect); 

h = fspecial('gaussian',[3,3],5); 
%structial element 

se90 = strel('line',5, 90); 
se0 = strel('line', 5, 0); 
ss=strel('diamond',10); 
var=3; 
start(vid); 

for i=1:500 
    tic 
    im1= getsnapshot(vid); 
    imrgb=im1; 
    im1=im1(:,:,1); 
    if var==3 

    im2= getsnapshot(vid); 
    im2=im2(:,:,1); 
    im2=imfilter(im2,h); 
    var=0; 
    end 
    %------------------------------------------------- 

     if 1 
     m1=imfilter(im1,h); 

    % c2=im2-im1 

    %cbw=im2bw(c2); 
    %allagi stin evais8isia tou threshold 
    cbw=imsub(im1,im2,14,h); 


    end 
    cbw1 = imerode(cbw, [se90,se0]); %sistoli 
    % cbw1 = imerode(cbw1, [se901,se01]); 
    %diastoli 
    cbw1= imdilate(cbw1,ss); 
    %fill holes 
    cbw2= imfill(cbw1, 'holes'); 
    cbw2= imfill(cbw2, 'holes'); 
    if 1 
    cbw3 = imerode(cbw2, [se90 se0]); %sistoli 
    cbw3 = imerode(cbw3, [se90 se0]); %sistoli 
    cbw3 = imerode(cbw3, [se90 se0]); %sistoli 
    cbw3 = imerode(cbw3, [se90 se0]); 
    cbw3= imfill(cbw3, 'holes'); %fill hole 
    end 

    if 1 
    %Boundary box 
    s = regionprops(cbw3, 'BoundingBox'); 
    if ~isempty(s) 
    cd = s.BoundingBox; 
    end 
    figure(1), 
    %imshow(cbw3); 
    imshow(imrgb) 
    hold on; 
    if ~isempty(s) 
    rectangle('Position',[cd(:,1) cd(:,2) cd(:,3) cd(:,4)],'LineWidth',2,'EdgeColor','b'); 
    end 
    hold('off'); 
    end 
    %empty ram 
    flushdata(vid) 
    var=var+1; 
    toc 
end 
stop(vid) 

Answer 1

退房vision.ForegroundDetector在計算機視覺系統工具箱，和下面的example。