India, Oct. 23 -- New Delhi

The Delhi Development Authority (DDA) plans to revamp green spaces and parks in south Delhi's Hauz Khas, based on a study conducted through detailed photogrammetry surveys using drones and differential global positioning system (DGPS) technology, officials familiar with the matter said. A tender has been issued in this regard for Rs.14.5 lakh, they said.

A photogrammetry survey is a technique used to create precise maps, 3D models and measurements of landscapes or structures using photographs taken from drones, aircraft, or other vantage points. By combining these images with DGPS data, engineers and planners can generate accurate spatial coordinates and elevation models. In urban planning and horticulture, p...