3.4 Assests
The user can add assets to the DroneNaksha on which the processing is to be carried out. These assets may be anyone from the following list such as:
Ortho
DSM
DTM
LAS/LAZ
The user will be able to upload anyone from the above types of file formats according to the requirements of the application.
3.4.1 Ortho Images:
Orthomosaic images are geometrically adjusted for the perspective view, together with the distortion of the lens and the angle of the camera, to produce a flawlessly straight-down picture of every object in the frame, much like you would see on Google Earth. While uploading any ortho image make sure you are uploading Cloud Optimized GeoTIFF (COG) having a size up to 4GB. Additional tags in a GeoTIFF give projection details for the image as per the GeoTIFF standard.
Select an appropriate orthomosaic image from the system and upload it as an asset. It will take some time to upload the image. Wait till the file is uploaded and then proceed for the actual processing with the selected image.
3.4.2 DSM Images
A surface is captured by DSM, encompassing both natural and man-made structures like trees and buildings. They demonstrate the reflective surfaces of every feature raised above the "bare earth." DSMs are, in essence, models of the the surface of the earth and all of its inhabitants.
3.4.3 DTM Images
DTMs are often made using photogrammetry. Because of its 3D breaklines and uniformly spaced 3D mass points, a DTM more accurately depicts distinct terrain characteristics.
3.4.4 LAS/LAZ Images
The LAZ (LASzip) file format, which is used to store LiDAR data, is a compressed variation of the LAS (LIDAR Aerial Survey) file format.
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