> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Smoothen Voxel Grid

## About this Block

**What it does:** The **Smoothen Voxel Grid** block uses a variety of smoothing algorithms, specified in the Filter input, to smooth out sharp features in a Voxel Grid.

**Common uses:**

* Smoothen out sharp features in a Voxel Grid.

**Tips:**

* The iterations input contributes to the overall smoothness and computation time, and controls the number of times that the smoothing algorithm is applied to the input Voxel Grid.
* The Width input refers to the range neighboring Voxels that contribute to the smoothing.
* A larger Width will result in a smoother output geometry, but will also remove small features that are smaller than the filter Width.
* The different smoothing algorithms are:
  * MeanCurvature: Moves the surface in a normal direction by an amount equal to the mean curvature
  * Laplacian: Applies Laplacian flow, This applies a weighted average of the voxel and its neighbors.
  * Dilate: Moves the surface outward by the amount specified.
  * Gaussian: Applies a gaussian flow, a weighted average of the voxel and its neighbors where a Gaussian determines the weights.
  * Median/Mean: Median/Mean flow. This is an averaging procedure where voxel values are replaced by the median/mean of a neighborhood.
  * Eikonal: Re-distances the voxel grid so that the result is an SDF.

***

Apply a filtering function to smoothen a voxel grid.

### Inputs

| Name       | Type                                                           | Description                                                                                                           |
| ---------- | -------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| Grid       | [Voxel Grid](../../../../block-documentation/types/voxel-grid) | The voxel grid to smoothen.                                                                                           |
| Filter     | Voxel Grid Filter Enum                                         | The smoothening method to use.                                                                                        |
| Iterations | [Integer](../../../../block-documentation/types/integer)       | The number of filter iterations to apply.                                                                             |
| Width      | [Integer](../../../../block-documentation/types/integer)       | The width of the filter kernel in voxel units. This value is only used for the Gaussian, Median, and Mean techniques. |

### Outputs

| Type                                                           |
| -------------------------------------------------------------- |
| [Voxel Grid](../../../../block-documentation/types/voxel-grid) |