Question

使用Facebook的OpenPose库，我生成了渲染的RGB图像和JSON文件。现在，从JSON文件中，我想形成感兴趣的人的2D骨架。但是在JSON文件中，检测到多个框架，有时甚至检测到错误的框架。如何跟踪感兴趣的人并从中形成2D骨架？

在图像（下面的链接）中，我给出了示例图像。这是我定义的功能。在这种情况下，我试图从左侧找到JSON的最小值，并使用该JSON值形成一个2D骨架。

function mat_files(json,mat)
filePattern = fullfile(json, '*.json');
file = dir(filePattern);

for m = 1:length(file)
    JsonDataBase = file(m).name;
    JsonData = fullfile(json, JsonDataBase);

    S2 = loadjson(JsonData);
    b1 = converting1(S2);%Converts all keypoints of persons detected in column format
    if b1 ==0
    else
        Zo = b1;
        Zo(: ,Zo(9,:) == 0 | Zo(11,:) == 0 | Zo(12,:) == 0 | Zo(14,:) == 0 | Zo(15,:) == 0 | Zo(10,:) == 0 | Zo(13,:)== 0 ) = NaN;
        Zo(Zo == 0) = NaN;
        a21 = min(Zo(:,1:2:end),[],1); %x values
        a211 = min(Zo(:,2:2:end), [],1); %y Values

        a22 = a21((a21 > 600 & a21 <1100) & ( a211 <700));
        %a222 = a222(a222 > 500 & a222 <1700);
        a2 = min(a22) ;
        %a23 = min(a222)
        if isempty(a2)
            continue
        else
            [x,y]=find(a2==Zo);
            A=Zo(:,y:y+1); % Gives only one set of keyjoints which is first from left.
            A(isnan(A)) = 0;
            b2 =int64(round(A));
        end
    end

    baseFileName2 = sprintf('%s.mat', JsonDataBase );
    fullFileName2 = fullfile(mat, baseFileName2);
    save(fullFileName2,'b2')

end

上面使用的转换函数如下：

function b1 = converting1(S)

a = zeros(1,54, 'uint8') ;% a= 1x54 uint8 row vector
b = zeros(25,3, 'double') ;% b is 14x3 double matrix
K = S.people;
if isempty(K) 
    b1=0;
else
        J = cell2mat(K);
        c = size(J,2);
        f=1;
        b1 = zeros(25 , c*2);
            for i = 1:size(J,2)
                A = J(i).pose_keypoints_2d;
                A1 = A(1,1:75);
                    n = 1;    
                     for C2 = 1:25
                         for C3 = 1:3
                             b(C2,C3) = A1(n);
                              n = n+1;
                         end
                     end

                    b1(:,f:f+1) = b(1:25,1:2) ;
                    f=f+2;

            end
end

如何从图像中追踪人物？

0 个答案: