Opening and closing images using morphological filters
The previous recipe introduced you to the two fundamental morphological operators: dilation and erosion. From these, other operators can be defined. The next two recipes will present some of them. The opening and closing operators are presented in this recipe.
How to do it...
In order to apply higher-level morphological filters, you need to use the
cv::morphologyEx function with the appropriate function code. For example, the following call will apply the closing operator:
// Close the image cv::Mat element5(5,5,CV_8U,cv::Scalar(1)); cv::Mat closed; cv::morphologyEx(image,closed, // input and output images cv::MORPH_CLOSE, // operator code element5); // structuring element
Note that we used ...