geo3d.rasters.blocks¶

Classes¶

`PipelineBlock`	Base class for all pipeline blocks.
`EPTReaderBlock`	EPT reader block.
`LASReaderBlock`	LAS reader block.
`NoiseRemovalBlock`	Noise removal block.
`AboveGroundFilterBlock`	Above ground filter block.
`GdalWriterBlock`	GDAL raster writer block.

Module Contents¶

class geo3d.rasters.blocks.PipelineBlock¶

Bases: abc.ABC

Base class for all pipeline blocks.

abstract build() → List[altametris.geo3d.core.base.Component]¶

Build PDAL stages for this block.

Returns:: A list of PDAL components (readers, writers, filters).
Return type:: List[Component]

class geo3d.rasters.blocks.EPTReaderBlock(filename: str, resolution: float | None = None, bounds: str | None = None, token: str | None = None)¶

Bases: PipelineBlock

EPT reader block.

It reads an EPT file and optionally applies bounds to crop. It can use a token to access the file.

filename¶

resolution = None¶

bounds = None¶

token = None¶

build() → List[altametris.geo3d.core.base.Component]¶

Build the EPT reader block.

Returns:: The EPT reader block as a list containing only the PDAL EPT reader.
Return type:: List[Component]

class geo3d.rasters.blocks.LASReaderBlock(filename: str, bounds: str | None = None)¶

Bases: PipelineBlock

LAS reader block.

It reads the LAS file and optionally applies bounds to crop it.

filename¶

bounds = None¶

build() → List[altametris.geo3d.core.base.Component]¶

Build the LAS reader block.

Returns:: The LAS reader block as a list containing the PDAL LAS reader followed by the crop filter.
Return type:: List[Component]

class geo3d.rasters.blocks.NoiseRemovalBlock(mean_k: int, multiplier: float)¶

Bases: PipelineBlock

Noise removal block.

Noise removal is done using a statistical outlier filter. Noise points which are given the class 7 are removed from the point cloud.

mean_k¶

multiplier¶

build() → List[altametris.geo3d.core.base.Component]¶

Build the noise removal block.

Returns:: The NoiseRemovalBlock list containing the statistical outlier and the range filters.
Return type:: List[Component]

class geo3d.rasters.blocks.AboveGroundFilterBlock(height_threshold: float)¶

Bases: PipelineBlock

Above ground filter block.

First, ground is detected using an SMRF filter (with default paremeters). Then, a ‘Height Above Ground Nearest Neighbor’ filter is applied to create a normalized height values in a dimension called ‘HeightAboveGround’. Last, A ranger filter is applied to remove points abouve a normalized height.

height_threshold¶

build() → List[altametris.geo3d.core.base.Component]¶

Build the above ground filter block.

Returns:: The AboveGroundFilterBlock list containing the smrf, hag_nn, and range filters.
Return type:: List[Component]

class geo3d.rasters.blocks.GdalWriterBlock(filename: str, resolution: float, window_size: float | None = None)¶

Bases: PipelineBlock

GDAL raster writer block.

The raster is created from an input point cloud and represents a dataset of different statistics. In this block we compute the ‘min’ and ‘max’ statistics that will be used to a correct height range.

filename¶

resolution¶

window_size = None¶

build() → List[altametris.geo3d.core.base.Component]¶

Build the GDAL writer block.

Returns:: The GdalWriterBlock list containing the GDAL writer.
Return type:: List[Component]