Update README.md

README.md

@@ -13,7 +13,7 @@
 <img src="./resources/diff.png" 
 width="1080" />
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-Representation gap between aerial and ground sources: We use the bounding box with the same color to focus on the same region and highlight the differences between aerial (**left**) and ground (**right**) LiDAR scans. Scopes (<span style="color:cyan">cyan</span>): The aerial scans cover a large region, while ground scans cover only a local area. Coverages (<span style="color:lawngreen">green</span>): The aerial scans cover the top of the buildings, while ground scans cover more details on the ground. Densities (<span style="color:blue">blue</span>): The distribution and density of the points are different because of various scan patterns, effective ranges, and fidelity of LiDARs. Noise Patterns (<span style="color:red">red</span>): The aerial scans have larger noises, as we can see from a bird-eye view and top-down view of a corner of the building.
+Representation gap between aerial and ground sources: We use the bounding box with the same color to focus on the same region and highlight the differences between aerial (**left**) and ground (**right**) LiDAR scans. Scopes ( ![#00ffff](https://placehold.co/15x15/00ffff/00ffff.png) <span style="color:cyan">cyan</span>): The aerial scans cover a large region, while ground scans cover only a local area. Coverages ( ![#65f015](https://placehold.co/15x15/65f015/65f015.png) <span style="color:lawngreen">green</span>): The aerial scans cover the top of the buildings, while ground scans cover more details on the ground. Densities ( ![#151cf0](https://placehold.co/15x15/151cf0/151cf0.png) <span style="color:blue">blue</span>): The distribution and density of the points are different because of various scan patterns, effective ranges, and fidelity of LiDARs. Noise Patterns ( ![#f03c15](https://placehold.co/15x15/f03c15/f03c15.png) <span style="color:red">red</span>): The aerial scans have larger noises, as we can see from a bird-eye view and top-down view of a corner of the building.
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 # Network Architecture