Improving Markup Quality in 2D Views

[park (PARKTAEYOUNG)]

Hi all

Is there a way to improve the markup quality as seen on the right side of the image? (It doesn’t necessarily have to look like 3D.)

Morever, I’d like to enhance the quality of lines and curves, particularly addressing artifacts like stair-stepping in both markup curves and diagonal lines in the 2D view.

[lassoan (Andras Lasso)]

You can enable interpolation, for example MSAA or FXAA.

MSAA interpolation can be enabled in application settings / Views / Multi-sampling (MSAA) → 4x (or higher for smoother results with higher computation cost).

FXAA can be enabled with a short Python code snippet. See example in the image below: left with FXAA, right without interpolation.

See in this topic how to enable FXAA and some more information on interpolation:

Antialiasing in in slice (MPR) views

Multi-sampling is the true antialiasing method, but that would mess with the Z buffer, and therefore with hardware-accelerated picking that is used for markup nodes label display and control point manipulation, compositing volume rendering and surface rendering, etc. Also as @pieper mentioned there seem to be some some issues with it in recent VTK and Qt versions (for example, I don’t think the MSAA setting has any effect right now on Windows). Alternatively, you can do screen-space antialiasin…