Update README.md

README.md

@@ -43,14 +43,14 @@ The semantic segmentation maps of **TopAir** contain 8 classes:
 
 | Class ID | RGB Color Palette | Class Name       | Definition                                                                                         |
 |----------|-------------------|------------------|----------------------------------------------------------------------------------------------------|
-| 1        | <span style="color:rgb(75, 163, 185)"> (75, 163, 185) </span>      | Water         | Includes houses, skyscrapers, and the elements attached to them                                        |
-| 2        | <span style="color:rgb(50, 128, 0)"> (50, 128, 0) </span>   | Trees            | Wood or wire assemblies that enclose an area of ground                                                 |
-| 3        | <span style="color:rgb(232, 250, 80)"> (232, 250, 80) </span>      | Land            | Uncategorized elements                                                                              |
-| 4        | <span style="color:rgb(237, 125, 49)"> (237, 125, 49) </span>    | Vehicle         | Markings on road                                                                                    |
-| 5        | <span style="color:rgb(70, 70, 70)"> (70, 70, 70) </span>     | Rocks       | Humans that walk                                                                                    |
+| 1        | <span style="color:rgb(75, 163, 185)"> (75, 163, 185) </span>      | Water         | Includes all water surfaces                                        |
+| 2        | <span style="color:rgb(50, 128, 0)"> (50, 128, 0) </span>   | Trees            | all trees and vegetation above the ground                                                 |
+| 3        | <span style="color:rgb(232, 250, 80)"> (232, 250, 80) </span>      | Land            | all ground types (dirt ground, rocky ground, ground vegetation, sand, etc)                                                                            |
+| 4        | <span style="color:rgb(237, 125, 49)"> (237, 125, 49) </span>    | Vehicle         | all types of ground vehicles (car, trucks, ..)                                                                                   |
+| 5        | <span style="color:rgb(70, 70, 70)"> (70, 70, 70) </span>     | Rocks       | boulders and rocks                                                                                 |
 | 6        | <span style="color:rgb(142, 1, 246)"> (142, 1, 246) </span>    | Road             | Lanes, streets, paved areas on which cars drive                                                       |
-| 7        | <span style="color:rgb(255, 128, 128)"> (255, 128, 128) </span>  | Building             | Vertically oriented pole and its horizontal components if any                                           |
-| 8        | <span style="color:rgb(128, 64, 64)"> (128, 64, 64) </span>    | Others         | Parts of ground designated for pedestrians or cyclists                                                 |
+| 7        | <span style="color:rgb(255, 128, 128)"> (255, 128, 128) </span>  | Building             | buildings and residential houses                                         |
+| 8        | <span style="color:rgb(128, 64, 64)"> (128, 64, 64) </span>    | Others         | any other objects not incuded in the above classes                                              |
 
 Per-class pixel distribution:
 .....
@@ -58,7 +58,7 @@ Per-class pixel distribution:
 To convert depth maps to their corresponding meter values:
 depth value (meter) = pixel value*100.0/255.0
 
-The reference frames convention used in the data collection of TopAir:
+The reference frames convention used in TopAir:
 <img src="./assets/ref_frames.jpeg" width="100%"/>
 
 ### Dataset Description