How to extract lip region from facial features

Question

SAMEER ahamed 2013-12-31

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/111073-how-to-extract-lip-region-from-facial-features

评论： Image Analyst 2018-3-3

Hi,

I am newbie for matlab , from matlab forums i have tried to get lip region ,but exact shape i cannot get .so please let me know where i have make mistake let me know,below code followed?

    YIQ = rgb2ntsc(hue1);
         Y1 = YIQ(:,:,1);
        I1 = YIQ(:,:,2);
        Q = YIQ(:,:,3);
        J = imadjust(Y1);
        t = graythresh(blue_Image);
    imCoin = (red_Image > hueThresholdHigh);
        K = medfilt2(red_Image);
        [level1 EM]= graythresh(K);
        BW_lip = im2bw(red_Image);
        Binary_Hue = red_Image > T;
        level = graythresh(J);
       binary_Image = im2bw(J,level);
       [imx,imy]=size(binary_Image);
       bw_Fill= imfill(binary_Image,'holes');
       labeledImage = bwlabel(bw_Fill, 8);
       blobMeasurements = regionprops(labeledImage, 'area');
       areas = [blobMeasurements.Area];
       [maxArea largestBlobIndex] = max(areas);
        bw_area = bwareaopen(bw_Fill ,2500);
       BWnobord = imclearborder(bw_area, 4);
       seD = strel('disk',1);
    %     BWfinal = imerode(BWnobord,seD);
        BWfinal = imerode(BWnobord,seD);
        BWoutline = bwperim(bw_area);
        Segout = mouthcrop;
        Segout(BWoutline) = 255;

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Image Analyst 2014-1-2

I don't have the computer vision system toolbox so I can't try that code. The lips you're using are very dark and very low contrast. They're hardly any different in color than the surrounding skin so I'm not surprised that you're having trouble. You're not going to solve it with any simple code that's only a dozen lines long.

SAMEER ahamed 2014-1-2

Thanks for reply me ,please let me know how to separate binary lip region from mouth skin . please let me know if any idea ?

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Answer 1

Image Analyst 2014-1-2

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/111073-how-to-extract-lip-region-from-facial-features#answer_119850

编辑：Image Analyst 2014-1-2

I have told you here in this link. Basically no one here is a lip reading expert, and there's no lip reading toolbox, so I pointed you to a place where you will find algorithms from lip reading experts. I know it's a little bit of work on your part to contact the authors or to try to write code to implement their algorithms, but since you don't seem to want to do it yourself, that's your only other option, unless you want to hire some consultant or university to do it for you. Good luck.

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Christakis Loizou 2018-3-3

Dear Image Analyst, is there a code where i want to track the lip movement? i dont want to read lips, i just want to track them while they are moving in real time. Is that possible?