README

Overview

This script is designed for visualizing 3D models using Open3D, a modern library for 3D data processing. The script loads a 3D model (in OBJ format) and a set of camera parameters (from a JSON file), and then visualizes the model along with camera positions in a 3D space. It also includes the option to visualize coordinate axes at each camera position.

Requirements

• Python 3.x
• Open3D library
• NumPy library

Installation

Before running the script, you need to install the Open3D and NumPy libraries. You can install them using pip:

pip install open3d numpy

Usage

The script is executed from the command line and takes three optional arguments:

1. --model_path: Path to the OBJ file of the 3D model. Default is "model.obj".
2. --camera_path: Path to the JSON file containing camera parameters. Default is "meta.json".
3. --add_axis: A boolean flag to decide whether to add coordinate axes at each camera position. Default is False.

Command Line Syntax

python <script_name>.py [--model_path PATH_TO_MODEL] [--camera_path PATH_TO_CAMERA_PARAMETERS] [--add_axis BOOLEAN]

Example

Without coordinate axes	With coordinate axes

Note

• Ensure that the paths to the model and camera parameter files are correct.
• The script uses a simple logarithmic function to adjust color intensity based on distance, which can be modified as per specific requirements.
• The view_point for distance calculation is currently set to [0, -2, 0] in the script and can be adjusted as needed.