Update README.md

Author: pedbrgs

README.md

@@ -1,43 +1,59 @@
-##  D-Fire: an image dataset for fire and smoke detection
+#  D-Fire: an image dataset for fire and smoke detection
 
 **Authors:** Researchers from Gaia, solutions on demand ([GAIA](https://www.gaiasd.com/))
 
-### About
+## About
 
 D-Fire is an image dataset of fire and smoke occurrences designed for machine learning and object detection algorithms with more than 20,000 images.
 
+<div align="center">
 <table>
-<tr><th>Number of images</th><th>Number of bounding boxes</th></tr>
-<tr><td>
+  <tr>
+    <th>Number of images</th>
+    <th>Number of bounding boxes</th>
+  </tr>
+ 
+  <tr><td>
 
-| Category | # Images |
-| ------------- | ------------- |
-| Only fire  | 1,164  |
-| Only smoke  | 5,867  |
-| Fire and smoke  | 4,658  |
-| None  | 9,838  |
+  | Category | # Images |
+  | ------------- | ------------- |
+  | Only fire  | 1,164  |
+  | Only smoke  | 5,867  |
+  | Fire and smoke  | 4,658  |
+  | None  | 9,838  |
 
-</td><td>
+  </td><td>
 
-| Class | # Bounding boxes |
-| ------------- | ------------- |
-| Fire  | 14,692 |
-| Smoke  | 11,865 |
+  | Class | # Bounding boxes |
+  | ------------- | ------------- |
+  | Fire  | 14,692 |
+  | Smoke  | 11,865 |
 
-</td></tr> </table>
+  </td></tr> 
+</table>
+</div>
 
-All images were annotated according to the YOLO format (normalized coordinates between 0 and 1).
+All images were annotated according to the YOLO format (normalized coordinates between 0 and 1). 
+However, we provide the yolo2pixel function that converts coordinates in YOLO format to coordinates in pixels.
 
 ***
 
-### Download
+## Some examples of labeled images
+
+<p align = "center">
+<img src="https://drive.google.com/uc?export=view&id=1TfxQUZd89zU7xYG3y0enivXk3rqI6sIj" width="auto" height="180"/>
+<img src="https://drive.google.com/uc?export=view&id=1OywHP44jNIy0uoA6O63VZPB1_Hi-sejK" width="auto" height="180"/>
+<img src="https://drive.google.com/uc?export=view&id=1mIvClp9fLnKURYrRoNab8b96FZCm3Zje" width="auto" height="180"/>
+</p>
+
+## Download
 
 * [Download D-Fire Dataset (only images and labels)](https://drive.google.com/drive/folders/1DWgsQLVgkkLM8m-VcugHNpD5WYDbjYp5?usp=sharing).
 * [Download some surveillance videos](https://drive.google.com/drive/folders/1P5TNDP7ZrWpIZ4v_Aav5hf3S9UII2ZKA?usp=sharing).
 * If you want more surveillance videos, please request your registration on our environmental monitoring website ["Apaga o Fogo!" (Put out the Fire!)](https://apagaofogo.eco.br/).
 * Data splitting is also available [here](https://drive.google.com/drive/folders/1Np_FC3MuuFJgV-z0FmZwS9YzsTKdyRGJ?usp=sharing).
 
-### Citation
+## Citation
 
 Please cite our paper in your publications if you use this dataset.