| HS | histogram stretching |
| HE | histogram equalizing |
| AHE | adaptive histogram equalizing |
| EHM | exact histogram matching |
| CLAHE | contrast-limited adaptive histogram equalization |
| UAV | Unmanned Aerial Vehicle |
| LiDAR | Light Detection and Ranging |
| ISOK | IT System of the Country Protection |
| RMS | Root Mean Square |
| ICP | Iterative Closest Point |
| IQR | interquartile range |
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