### Description

We create an imaging pipeline to visualize gradient information.

The gradient direction is mapped into color hue value while the gradient magnitude is mapped into the color saturation.

!!! info
    See [Figure 10-16](../../../VTKBook/10Chapter10/#Figure%2010-16) in [Chapter 10](../../../VTKBook/10Chapter10) the [VTK Textbook](../../../VTKBook/01Chapter1).
