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]