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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

0.6.0 - 2022-09-05

Changed:

  • continuous integration moved from travis to GH actions
  • naming of band ratio's modified (symbol "<" dropped from label)

Added

  • releases published on PyPI using GH actions
  • checklists included

Fixed

  • Fixed import of deprecated scipy.stats.stats

0.5.0 - 2022-05-20

Changed:

  • update documentation with table of features
  • drop python 3.5 due to problematic lazperf dependency, includes CI on python 3.7 and 3.8
  • drop usage of pylas (deprecated) in favour of laspy, with lazrs backend for LAZ compression

Fixed

  • minor fixes following updates in dateutils/click

0.4.2 - 2020-09-18

Added:

  • faster implementation of spatial selection

Changed:

  • all elements in WKT and shapefiles containing multiple polygons are considered (not only the first element)
  • the validity conditions for multipolygons have been relaxed: valid adjacent polygons are now accepted

Fixed:

  • bug in copy_point_cloud with masks and zero-filled feature-arrays

0.4.1 - 2020-05-20

Added:

  • select_equal filter accepts list of values to compare to the points' attributes
  • also the attribute-based filter functions optionally return a mask to allow filter combinations

Fixed:

  • bug in writing/reading 'None' as parameter in the PLY comments

0.4.0 - 2020-05-13

Added:

  • build_volume module
  • the most relevant functions can be now imported directly from laserchicken
  • reading/writing of binary PLY and LAZ files, with optional writing of selected attributes
  • utility function to merge point-cloud data
  • extra log tasks implemented: point-cloud log entries are introduced upon point-cloud loading, filtering, normalizing, merging and assigning to targets.
  • select_polygon now supports multi-polygons and optionally return a mask for the selected points

Changed:

  • compute neighborhoods returns generator with neighborhoods instead of nested neighborhoods like it did before (breaking change!)
  • Some of the existing modules have been renamed/restructured (breaking changes!):
    • normalization --> normalize
    • feature_extraction created (functions moved from feature_extractor/__init__.py)
    • select and spatial_selection merged into filter, with the function select_polygon allowing to deal with all the spatial selection functionalities
    • format-specific read_* and write_* modules replaced by load and export
  • Dependency on laspy replaced by pylas + lazperf (easier reading/writing of LAS/LAZ files)

0.3.2 - 2019-12-12

Added

  • Features added:
    • max_intensity
    • min_intensity
    • range_intensity
    • mean_intensity
    • std_intensity
    • coeff_var_intensity

Changed

  • Features renamed:
    • max_norm_z --> min_normalized_height
    • min_norm_z --> max_normalized_height
    • range_norm_z --> range_normalized_height
    • mean_norm_z --> mean_normalized_height
    • std_norm_z --> std_normalized_height
    • coeff_var_norm_z --> coeff_var_normalized_height
    • density_absolute_mean_norm_z --> density_absolute_mean_normalized_height
    • entropy_norm_z --> entropy_normalized_height
    • kurto_norm_z --> kurto_normalized_height
    • skew_norm_z --> median_normalized_height
    • var_z --> skew_normalized_height
    • perc_1_norm_z --> var_normalized_height
    • perc_100_norm_z --> perc_1_normalized_height

0.3.1 - 2019-09-25

Added

  • Percentiles 1-100
  • Percentiles normalized height 1-100
  • Band ratio feature extractor
  • Function to list available feature extractors
  • Tutorial notebook

Changed

  • Echo ratio no longer gives percentage (removed factor 100)

Fixed

  • Bug in reading ply file with comments in unexpected format
  • Bug in normal vector and slope

Removed

0.3.0 - 2019-02-27

Added

  • Normalization module
  • General tests that all current and future feature extractors will be checked against.
  • Possibility to have a randomly subsampled (fixed) number of neighbors (eg for faster feature calculation)
  • Added feature extractors based on normalized height

Changed

  • Many feature calculations are done in a vectorized way
  • z_entropy feature renamed to entropy_z for consistency
  • density_absolute_mean feature renamed to density_absolute_mean_z for consistency
  • perc_10 features renamed to perc_10_z for consistency

Fixed

  • Corner cases for many feature extractors (e.g. zero points)
  • Bug in slope feature calculation
  • Bug in fix density absolute mean feature calculation

Removed

[0.1.0] - 2018-04-17