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### roipoly matlab function equivalent in OpenCV

I am converting a matlab code into C++ using OpenCV libraries.

Can anyone tell me roipoly matlab function equivalent in OpenCV??

Or how to get the same functionality using OpenCV?

BW = roipoly(I, c, r)


BW = roipoly(I, c, r) returns the ROI specified by the polygon described by vectors c and r, which specify the column and row indices of each vertex, respectively. c and r are of same size.

In my case I want to extract triangular roi from the image, so c and r are of size 3x1.

Can anyone tell me how to do this in C++ using OpenCV??

 2 retagged sturkmen 6772 ●3 ●48 ●79 https://github.com/stu...

### roipoly matlab function equivalent in OpenCV

I am converting a matlab code into C++ using OpenCV libraries.

Can anyone tell me roipoly matlab function equivalent in OpenCV??

Or how to get the same functionality using OpenCV?

BW = roipoly(I, c, r)


BW = roipoly(I, c, r) returns the ROI specified by the polygon described by vectors c and r, which specify the column and row indices of each vertex, respectively. c and r are of same size.

In my case I want to extract triangular roi from the image, so c and r are of size 3x1.

Can anyone tell me how to do this in C++ using OpenCV??

 3 retagged sturkmen 6772 ●3 ●48 ●79 https://github.com/stu...

### roipoly matlab function equivalent in OpenCV

I am converting a matlab code into C++ using OpenCV libraries.

Can anyone tell me roipoly matlab function equivalent in OpenCV??

Or how to get the same functionality using OpenCV?

BW = roipoly(I, c, r)


BW = roipoly(I, c, r) returns the ROI specified by the polygon described by vectors c and r, which specify the column and row indices of each vertex, respectively. c and r are of same size.

In my case I want to extract triangular roi from the image, so c and r are of size 3x1.

Can anyone tell me how to do this in C++ using OpenCV??