India, July 23 -- The Delhi Development Authority (DDA) is set to launch a pilot project to carry out a drone-based photogrammetry survey of four prominent green areas in Hauz Khas area of south Delhi, with one of the aims being preventing encroachment of ecologically significant spaces, officials aware of the matter said.

DDA owns and maintains most of the green areas and parks in Delhi. Officials stated that the move is part of a broader strategy to digitise and document Delhi's green zones, and initiative will enhance monitoring and ensure clear demarcation.

"This is a pilot project that we are trying to adopt to ensure that we have 3D images of the green areas under DDA. These surveys will help us maintain updated records of green c...