fixed readme typos & added link to potreeconverter docs

README.MD

@@ -7,11 +7,18 @@ The main steps are:
 2. Convert CSV Surveys to LAS using EPSG:4978
 3. Group and Crop by H3 Cells
 
-`./PotreeConverter` converts LAS files into Potree's Octree Structure, which the Molloy Explorer Potree Viewer supports as its native input format.
+`./PotreeConverter` converts LAS files into Potree's Octree Structure, which the Molloy Explorer Potree Viewer supports as its native input format. Additional documentation on the PotreeConverter can be found in the PotreeConverter GitHub repository: [PotreeConverter](https://github.com/potree/PotreeConverter)
 
-## How to run
+## Requirements
+
+### Prerequisites
+
+- CMAKE Version >= 3.16
+- PDAL
 
-### 1. Prepare Files and Folders
+You will need to have CMAKE version 3.16 or later to run the PotreeConvert to create the data structure.
+
+### Prepare Files and Folders
 
 Before running the script, make sure your project folder has the following structure:
 
@@ -44,7 +51,9 @@ metadata/
 
 - Must contain a single column `cell_id`, listing all relevant **level 1 H3 cells**.
 
-### 2. Activate python environment
+## How to run
+
+### 1. Activate python environment
 
 Create a python virtual environment with
 
@@ -66,15 +75,15 @@ Activate it:
 source <environment_name>/bin/activate
 ```
 
-### 3. Install requirements
+### 2. Install requirements
 
 Install the required Python packages:
 
 ```zsh
 pip install -r requirements.txt
 ```
 
-### 4. Run the lasConverter script
+### 3. Run the lasConverter script
 
 Run the converter:
 
@@ -84,7 +93,7 @@ python lasConverter.py
 
 The processed LAS files, cropped to level 2 H3 cells, will be saved in the `./h3_cells` folder.
 
-### 5. Setup PotreeConverter
+### 4. Setup PotreeConverter
 
 First make a build directory in the Potree directory
 
@@ -101,7 +110,7 @@ cmake ../
 make
 ```
 
-### 6. Run the PotreeConverter
+### 5. Run the PotreeConverter
 
 From the root of the repository, run the run.sh script to convert the H3 cells into the Potree Structure.
 
@@ -111,6 +120,6 @@ From the root of the repository, run the run.sh script to convert the H3 cells i
 
 The output is saved in `./pointclouds`. It can then be directly moved into the `public` folder in the Molloy Explorer viewer or the shell script can be adjusted to automatically save the files in the viewer.
 
-### 7. Optimizations
+### 6. Optimizations
 
 This script runs the PotreeConverter on each of the H3 cells sequentially. It is possible to modify the shell script to run these conversions in parallell.