threshold(Img, Img, t, 255, CV_THRESH_BINARY_INV);
    vector<vector<Point>> varName;
    findContours(Img, varName, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);

D:OpencvWorkspace....|50|error: 'varName' was not declared in this scope|

vector<vector<Point>> varName;

vector<vector<Point> > varName;
                 // ^ Note the space

vector<vector<Point>> varName;

vector<vector<Point> > varName;