In visual effects and video editing software. DEFOCUS NODE (blur node) is often used to simulate a focus effect, where the focus of an image or video is adjusted so that certain areas become blurred to mimic the effect of a camera’s focus adjustment.DEFOCUS NODE is used to create a depth-of-field effect, where some parts of an image are kept sharp while other parts become blurred.
The RotoPaint node allows users to perform repair and painting operations directly on an image or video. This is useful for fixing flaws in footage, hiding unwanted elements or adding extra details.
- if you use the node of roto paint which include blur /sharpen/smear.
2.If I need to perform an image matting operation, I can use the roto paint with premult.
3. there is brush size can change the scale of object.
4. through the alpha of gain, the size of the particles can be adjusted to make the picture look more natural.
5.the combination of stmap and roto can distort the picture.