注意：请避免安装在中文路径以及有空格的路径中。
Note: Please avoid installing in a path with spaces.

When using LESS in your work, please cite:

Qi, J., Xie, D., Yin, T., Yan, G., Gastellu-Etchegorry, J.-P., Li, L., Zhang, W., Mu, X., Norford, L.K., 2019b. LESS: LargE-Scale remote sensing data and image simulation framework over heterogeneous 3D scenes. Remote Sensing of Environment 221, 695–706. https://doi.org/10.1016/j.rse.2018.11.036

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LESS-2.2.0 (2026.04.05)

Download links

Google Drive 百度网盘 LESS Publisher

Docker： Search lessrt/less-jupyter in the docker hub to use docker image of LESS, it provides jupyter notebook interface (no GUI).

Updates

English

  • • A new atmosphere radiative transfer module with SunSky model has been integrated, enabling more realistic atmospheric simulation.
  • • The photosynthesis module has been significantly enhanced: turbid medium photosynthesis simulation is now supported, batch processing mode has been added, and overall stability has been improved.
  • • Full Linux support has been added, including updated build scripts, Python 3.12 runtime, and Docker image for containerized deployment.
  • • The Python SDK (pyLessSDK) now supports programmatic scene creation, and module lazy loading has been implemented for faster import times.
  • • The RPV BRDF model now supports multi-band simulation.
  • • GUI batch parameter setting tool has been added for more efficient parameter configuration.
  • • Fixed a memory leak issue caused by sensor/film not being properly released during runtime scene updates.

中文

  • • 新增大气辐射传输模块，集成了SunSky模型，可实现更加真实的大气模拟效果。
  • • 光合作用模块大幅增强：支持浑浊介质光合模拟、新增批处理模式，整体稳定性显著提升。
  • • 全面支持Linux平台，更新了构建脚本，集成Python 3.12运行环境，并提供Docker镜像支持容器化部署。
  • • Python SDK (pyLessSDK) 新增程序化创建场景功能，并实现模块懒加载以加速首次导入速度。
  • • RPV BRDF模型现已支持多波段模拟。
  • • GUI界面新增批量参数设置工具，提高参数配置效率。
  • • 修复了运行时场景更新时sensor/film未正确释放导致的内存泄漏问题。

LESS-2.1.9 (2025.07.25)

Download links

Google Drive 百度网盘 LESS Publisher

Docker： Search lessrt/less-jupyter in the docker hub to use docker image of LESS, it provides jupyter notebook interface (no GUI).

Updates

English

  • • A new LESS PyCodeEditor has been added, this editor can be used to edit Python code for doing simulations.
  • • It also provides an 'less' object, allowing users to use this object to manipulate the parameters of the GUI.
  • • A new plugin named ReconstructTreeFromPointCloud has been added, this new plugin allows users to reconstruct tree object from single tree point cloud.
  • • A new plugin to generate 3D scenes from urban buiding shapefile.

中文

  • • 新版本中，增加了一个Python代码编辑器LESS PyCodeEditor,在编辑器中可以直接编辑和运行python代码。
  • • 该编辑器提供了一个默认的less对象，基于该对象可以实现对GUI图形界面的参数的控制，以方便利用代码进行批处理和模拟。
  • • 增加了一个新的单木重建插件，利用该插件，可以实现对单木点云重建单木三维结构，输出OBJ文件。
  • • 增加了一个从shapefile文件生成建筑物三维场景的插件。

LESS-2.1.8 (2025.04.12)

Download Links

Google Drive 百度网盘 LESS Publisher

更新内容

English

  • • The ALS2LESS tool has been upgraded. It now supports individual trees that have been pre-segmented.
  • • The LiDAR simulation module has significantly improved the efficiency of generating pulses.
  • • A mobile LiDAR simulation plugin has been added, which can generate the trajectory of mobile LiDAR.
  • • A forestry inventory plugin has been added, which can automatically extract tree height, diameter at breast height, and other information from forest scenes.
  • • A plugin named ReconstructTreeFromPointCloud has been added for reconstructing tree structures from terrestrial/SLAM LiDAR.
  • • The AutoGUI function with a graphical interface has been added.
  • • The model has been coupled with the Farquar model and others, adding a photosynthesis module.

中文

  • • 新版本中，对于ALS2LESS工具进行了升级，目前支持预先分割好的单木，在las文件中，通过treeID字段来区分不同的单木。
  • • 激光雷达模拟模块，大幅提高了生成pulse的效率，以及增加了TLS模拟时，激光雷达批处理方式。
  • • 添加了一个移动激光雷达模拟插件，可以生成移动激光雷达的路径。
  • • 添加了一个forestryinventory插件，可以对森林场景自动提取树高，胸径等信息。
  • • 添加了从地基/SLAM激光雷达重建树木结构的插件ReconstructTreeFromPointCloud。
  • • 增加了图形界面的AutoGUI功能，即通过在界面输入Python 脚本的方式来控制界面的参数。
  • • 耦合Farquar等模型，增加了光合作用模块，可以实现三维光分布、光合作用的模拟。

LESS-2.1.7 (2024.10.13)

Download Links

Google Drive 百度网盘 LESS Publisher

更新内容

English

  • • A new Plugin named GenerateSlantedMesh has been added, which genrate simple terrain with slopes.
  • • We have modified the strategy to processing meshes to avoid a double copy of OBJ files.
  • • Some bugs have been fixed.

中文

  • • 新版本中我们增加了一个GenerateSlantedMesh插件，该插件可以产生不同朝向和坡度下的单坡面地形。
  • • 我们该改变了处理OBJ文件的策略，避免了双重复制OBJ文件，这在模拟项目中有大量OBJ文件时节省了大量磁盘空间。
  • • 修复了一些bug。