Unprojects motion derived from a 3D Scene node which effectively stabilizes the motion. The area inside the card is remapped so that it becomes flat--making it easier to work with pixels that have a regular repeating pattern or tend to be more horizontal or vertical. It's most useful to help correct for foreshortened projected pixels. For example, it's like you're the camera and you move yourself (the camera) to look head-on into an area of the image that has perspective.

Note: Requires a Data input connection from an 3D Scene node.

The Unproject/Reproject workflow consists of unprojecting motion derived from a 3D Scene node (effectively stabilizing the motion), painting or compositing on the locked down sequence and then reprojecting back to the original motion.

Go to the Paint/Compositing With Unproject/Reproject tutorial to see how it works.

Transform.

Selects the surface from the 3D Scene node’s Data input. If the 3D Scene contains only one surface, Auto automatically selects it.

Determines how the card is fitted within the Viewer.

The card’s aspect ratio is used.

The card is fit to the session dimensions.

The card is fit to a square.

The unprojected image’s corner points can be fine tuned by adjusting the Corner-Pin values as well as dragging the four points on the corners of the screen.

Controls the X and Y position of the Upper Left Point.

Controls the X and Y position of the Upper Right Point.

Controls the X and Y position of the Lower Right Point.

Controls the X and Y position of the Lower Left Point.

Chooses the filtering method when transforming the image. Mitchell is the default.

The Triangle filter is not the highest quality, but fine for scaled images.

Quadratic is like triangle, but more blur with fewer artifacts. It offers a good compromise between speed and quality.

Cubic is the default filter in Photoshop. It produces better results with continuous tone images, but is slower than Quadratic. If the image contains fine details, the result may be blurrier than desired.

This produces good results with continuous tone images which are scaled down, producing sharp results with fine detailed images.

Gaussian lacks in sharpness, but is good with ringing and aliasing.

A good balance between sharpness and ringing, Mitchell is a good choice when scaling up.

Keeps small details when scaling down with good aliasing.