opencv在matlab中是否具有类似于size和bwperim的函数？

Question

我是opencv的新手，擅长matlab

我想将下面的equalent写成opencv

[毫米，NN] =尺寸（binaryimage）;

bwperim（binaryimage）;

请任何人帮忙

Answer 1

这些东西有一个库：http://opencv.willowgarage.com/wiki/cvBlobsLib

Answer 2

为了模仿bwperim你可以做

Mat m;
Mat dilated = m.clone(); dilate(dilated,one_pixel_wide_element);
Mat output = dilated - m;

可以构建one_pixel_wide_element using instructions from opencv：

  dilation_type = MORPH_RECT;
  dilation_size = 1;
  Mat element = getStructuringElement( dilation_type,
                  Size( 2*dilation_size + 1, 2*dilation_size+1 ),
                  Point( dilation_size, dilation_size ) );

这给出了外边界。对于内部边界，侵蚀（和m-eroded）。