Colorizing points with imagery¶
- Purpose:
Top-down projection of RGB imagery
Improve visualization
Assign other GDAL data to points
Colorization (setup)¶
LAZ point cloud
GeoTIFF
Range?¶
GDAL assigns NODATA values
Range filter tosses them
Colorization (pipeline)¶
{
"pipeline": [
"./exercises/analysis/colorization/uncompahgre.laz",
{
"type": "filters.colorization",
"raster": "./exercises/analysis/colorization/casi-2015-04-29-weekly-mosaic.tif"
},
{
"type": "filters.range",
"limits": "Red[1:]"
},
{
"type": "writers.las",
"compression": "true",
"minor_version": "2",
"dataformat_id": "3",
"filename":"./exercises/analysis/colorization/uncompahgre-colored.laz"
}
]
}
Colorization (command)¶
1 | pdal pipeline ./exercises/analysis/colorization/colorize.json
|
Colorization (polygon)¶

Colorization Filter¶
For every point
Query GDAL-readable raster
Set point attribute to band value
LAS Writer¶
Output LAZ
LAS 1.2
Point Format 3
Colorization (verify)¶

Next¶
On to Removing noise