Suppose, I need to construct a Band-pass filter in OpenCV. But, I know, there are no functions in OpenCV for Band-pass filters.
Now, what I need to do is to have a low-pass filter and a high-pass filter and combine them as a series. That is, first, the image would be passed through a low-pass filter and then the output of that low-pass filter would be passed to a high-pass filter.
Am I correct?
Now, what kind of low and high pass filters should I use? Would they be,
- Gassian low/high pass filters
- Mean low/high pass filters
- Median low/high pass filters
- Sobel filters
- or, anything else...