Access matrix value opencv

On the documentation:

http://docs.opencv.org/2.4/modules/core/doc/basic_structures.html#mat

It says:

(...) if you know the matrix element type, e.g. it is float, then you can use at<>() method

That is, you can use:

Mat M(100, 100, CV_64F);
cout << M.at<double>(0,0);
Maybe it is easier to use the Mat_ class. It is a template wrapper for Mat. Mat_ has the operator() overloaded in order to access the elements.

Source: grepper.com

Access matrix value opencv

Mat M(100, 100, CV_64F);
cout << M.at<double>(0,0);

Source: coders911.org

Similar codes

0 vote191 views1 answer
Adf test python
Python
-1 vote196 views1 answer
Can only use .dt accessor with datetimelike values
Python
3 votes180 views2 answers
How many columns have null values present in them? in pandas
Python
2 votes203 views1 answer
Python dict exclude keys
Python
0 vote198 views1 answer
Deep clone 2d list python
Python
0 vote226 views1 answer
Ipywidgets label text color
Python
0 vote197 views1 answer
I want only the span of finditer in re python
Python
0 vote203 views1 answer
Python - extract min and max values per each column name
Python
0 vote239 views1 answer
Read tar.gz file python
Python
38 votes205 views2 answers
How to file in python
Python