filters.csf

The Cloth Simulation Filter (CSF) classifies ground points based on the approach outlined in [Zhang2016].

Default Embedded Stage

This stage is enabled by default

Example

The sample pipeline below uses CSF to segment ground and non-ground returns, using default options, and writing only the ground returns to the output file.

[
    "input.las",
    {
        "type":"filters.csf"
    },
    {
        "type":"filters.range",
        "limits":"Classification[2:2]"
    },
    "output.laz"
]

Options

resolution

Cloth resolution. [Default: 1.0]

ignore

A range of values of a dimension to ignore.

returns

Return types to include in output. Valid values are “first”, “last”, “intermediate” and “only”. [Default: “last, only”]

threshold

Classification threshold. [Default: 0.5]

smooth

Perform slope post-processing? [Default: true]

step

Time step. [Default: 0.65]

rigidness

Rigidness. [Default: 3]

iterations

Maximum number of iterations. [Default: 500]