Case Study
COAL INDIA
First of its kind project in coal India to evaluate and benchmark the UAV based aerial survey technology to generate geo-referenced ortho photo mosaic in mine planning and UAV based lidar survey to compute the stockpile volume to compare the volumes derived from 3d point cloud and TLS.
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Conducted 100 sq.km UAV based Aerial survey to generate geo-referenced ortho photo mosaic, DTM and 1m interval contour maps in Nigahi,Jayant, Amlohri and Dadichua areas of Northern Coalfields Limited, Singrauli.
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Conducted UAV based LiDAR survey of a stockpile in Dadichua area of NCL to compute the volume based on the LiDAR Data. Compared the Volumes computed from the TLS and UAV based 3d-Point Cloud.
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The study is to benchmark the UAV adoption in Volume computation of OB and Stockpiles. The results provide an possible adoption of UAV in Mine Planning and Analysis.
Project team lesioned with Director General of Civil Aviation (DGCA), Ministry of Home Affairs (MHA) and Ministry of Defence (MoD) to get approvals and inspections to conduct the UAV based Aerial Survey.
Project Team played pivotal role in supplying of latest LiDAR based UAV to conduct the Airborne LiDAR Survey. Velodyne HDE 32 LiDAR Scanner is employed in the survey which provided 300,000 pulses per second.
Our Approach
DATA PROCESSING
We have taken utmost care in processing the Aerial photographs generated from UAV Based Survey. In order to reduce the RMS error of the Position, more number of GCP points were captured. 20% of the GCP points captured were used as Check-points to ensure positional accuracy of the ortho photos. The Ortho photographs were mosaiced by creating seamlines along the overlapping areas and performed stitching of the ortho images using the Geo-Vista.
Efforts have been made to bring the nature colors of the photo which would otherwise lost its true colors during automated pixel matching during the processing of the Data.
Deployed Latest UAV’s to executed the project.
>> Easy-bee - Average area covered per day is 5 sq.kms