inac's profile - activity

Tracking Keypoints in SimpleBlobDetector Is there a recommended class or method to use to track each identified blob in

How do you draw the findContour results by itself (instead of an overlay as with drawContour)?

I've tried drawContour but it seems to only draw the contour around the image. i'm trying to draw just the outside contour - also updated question. thanks for pointing out that it's not clear - i am not very good at asking questions sometimes

How does one draw an outline based on the outside edge of a contour?

I've tried drawContours, but that seems to only draw the contours on an existing image - but how does one simply extract the outside contours and draw only the contour onto a new mat/image?

Thanks - sorry for asking the question wrongly, when I was in-fact looking for whether the shaving had to be done or not - apparently it had to be!

How do you keep an image's transparent background or alpha channel?

i.e., Canny input: .png with existing transparent alpha channel background. I'd like to figure out how to get the latter output instead of the first.

Why not use optical flow in addition to correct for jitter