opencv_trail_effect draws a trail after performing foreground segmentation
using OpenCV.
-Segmentation can done using either thresholding or background subtraction.
+Segmentation in opencv_trail_effect can done using either thresholding or
+background subtraction.
A few conditions are required to create a decent effect:
subtraction it is recommended to disable auto-gain in the camera, and
avoid any artifact introduced by the power line frequency);
3. the subject should enter the scene only after the background learning
- phase has finished, i.e. after opencv_trail_effect has showed the preview
+ phase has finished, i.e. after opencv_trail_effect has shown the preview
window.