 | 1 | initial version |
When calling filter2D and sepFilter2D, I want to use a constant border, which I do by providing BORDER_CONSTANT for the "borderType" parameter as specified in the documentation (http://opencv.itseez.com/modules/imgproc/doc/filtering.html?highlight=gaussianblur#filter2d).
However, I do not see how I can specify WHAT I want that constant value to be. How do I achieve this?
| | 2 | No.2 Revision |
When calling filter2D and sepFilter2D, I want to use a constant border, which I do by providing BORDER_CONSTANT for the "borderType" parameter as specified in the documentation (http://opencv.itseez.com/modules/imgproc/doc/filtering.html?highlight=gaussianblur#filter2d).
However, I do not see how I can specify WHAT I want that constant value to be. How do I achieve this?
(edit: I did find that the default constant border value seems to be 0.)
| | 3 | Updated the link to go to docs.opencv.org |
When calling filter2D and sepFilter2D, I want to use a constant border, which I do by providing BORDER_CONSTANT for the "borderType" parameter as specified in the documentation (http://opencv.itseez.com/modules/imgproc/doc/filtering.html?highlight=gaussianblur#filter2d).(http://docs.opencv.org/modules/imgproc/doc/filtering.html?highlight=gaussianblur#filter2d).
However, I do not see how I can specify WHAT I want that constant value to be. How do I achieve this?
(edit: I did find that the default constant border value seems to be 0.)
| | 4 | No.4 Revision |
When calling filter2D and sepFilter2D, I want to use a constant border, which I do by providing BORDER_CONSTANT for the "borderType" parameter as specified in the documentation (http://docs.opencv.org/modules/imgproc/doc/filtering.html?highlight=gaussianblur#filter2d).
However, I do not see how I can specify WHAT I want that constant value to be. How do I achieve this?
(edit: I did find that the default constant border value seems to be 0.)
(edit in reply to Alexander, I do not see how to reply directly to answers: If I am not mistaken, copyMakeBorder will allocate a new image and copy the input image to a subregion of that new image. That seems a little excessive just to get access to the the ability to have non-zero constant border interpolation methods. Is there any other way to change the constant border value that does not require such memory allocations and copies?)
