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Purpose

This repo provides a short .ipynb tutorial for loading and visualizing the CARLA data from the PRECOG paper.

Paper pdf link: https://arxiv.org/pdf/1905.01296.pdf
Project page link: https://sites.google.com/view/precog

Visualizations on nuScenes data:

Visualization video Visualization video

Code

Link to PRECOG implementation code: https://github.com/nrhine1/precog
Link to Deep Imitative Models implementation code: https://github.com/nrhine1/deep_imitative_models

CARLA Town01 Data:

Here's a link to the dataset we used for training and evaluating our approach on CARLA Town01 (see Appendix for experiment details) https://drive.google.com/drive/folders/1arYDYuG4SDrQkc4ynzVOG5ObEOVvq9iX

CARLA Town02 Data:

Here's a link to the dataset we used for training and evaluating our approach on CARLA Town01 (see Appendix for experiment details) https://drive.google.com/drive/folders/1s-g5hWtDLrcQPjc6Xra5Up3BFF3jrJle

overhead_features format:

The overhead_features is a very simple featurization of the 3D LIDAR point cloud. I did not put much effort into tuning this representation. Nonetheless, here's the format:

Channel 0: Histogram of all points in each cell (for all heights)
Channel 1: Histogram of points above ground z-threshold
Channel 2: Histogram of points below ground z-threshold
Channel 3: Histogram of points above a higher z-threshold

The z-thresholds are listed here: https://github.com/nrhine1/deep_imitative_models/blob/00419760f50ca0800be7a95716d75a5cf421867f/dim/env/preprocess/carla_preprocess.py#L611-L613

They are -4.5, and -2.0 in the coordinate frame of the LIDAR sensor.

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Small example for loading the CARLA data from the PRECOG paper

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