Digital Photogrammetry is the creation of three dimensional (3D) point cloud data by applying image matching to overlapping digital images.
Photogrammetry means "measuring with light", where the light is sunlight reflected from the ground and vegetation, captured by the camera. The colors in the images can be assigned to each point in the 3D point cloud data created through image matching, providing additional information about the objects in the images.
In our research group, we work with both aerial photographs and close-range photogrammetry. 3D point clouds derived from aerial photographs are evaluated for estimating forest variables such as tree height, volume, and tree distribution, alongside field data. 3D point clouds generated from overlapping close-range photographs are evaluated for field-measurement of tree stems.
Point cloud from aerial photos.
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Point cloud from aerial photos.
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