Canopy cover 1 Change analysis 1 Cover change 1 Forest cover change 1 Historical image 1 Image analysis 1 Multi-temporal 1 Photogrammetry 1 Reforestation 1 Temporal gradient 1 Temporal gradients 1 Tree height 1 Tropical forest 1 Tropics 1 Vertical structures 1 classification 1 density 1 economic regeneration forest canopy 1 forest cover 1 image analysis 1 regeneration 1 temporal analysis 1 tropical forest 1 vegetation cover 1