Compositing Workflows

The Compositing Workflow nodes deal with the bread and butter functions required in compositing, but within a VR environment.

• C_Blender - is used as a Merge node to combine all images together after manually correcting a stitch. See Blending Multiple Views Together for more information.

• C_Blur - similar to Nuke's standard Blur, but allows you to apply blur to a latlong image and produce a sensible result across the entire frame, as if the blur were applied to a rectilinear image all around. See Applying LatLong Blur for more information.

• C_Tracker - similar to Nuke's standard Tracker, but with the addition of CameraTracker-style auto-tracking and calibrated for pattern tracking in lat-long space. See Tracking and Stabilizing for more information.

• RayRender - CaraVR adds to Nuke’s RayRender a number of advantages over scanline-based renderers in a VR context, including:

• the ability to render polar regions in a spherical mapping correctly, without the artifacts inherent in scanline-based rendering in these areas, and

• support for lens shaders, allowing slit scan rendering of multi-view spherical maps. This provides a more natural viewing environment for VR material.

See Rendering Using RayRender for more information.

• C_STMap - a GPU accelerated version of the Nuke STMap node, C_STPMap allows you to move pixels around in an image using a stitch_map or ppass_map to figure out where each pixel in the resulting image should come from in the input channels. You can re-use the map to warp another image, such as when applying lens distortion. See Warping Using STMaps for more information.

• C_AlphaGenerator - a convenience tool that can be used to create a rectangular or elliptical mask in the alpha channel. See Generating Alpha Masks for more information.

• C_GenerateMap - outputs a stitch_map or ppass_map for UV or XYZ coordinates, which can be warped and then piped into C_STMap. See Generating Stitch and PPass Maps for more information.

• Split and Join Selectively - similar to Nuke's Split and Join node, but gives you more control over which views are affected. See Split and Join Selectively for more information.