Experiences on Digital Photogrammetry and Remote Sensing
A Production Perspective By Infotech Enterprises Ltd
Asst Project Manager
Infotech Enterprises Ltd,
Email: [email protected]
The field of photogrammetry is rapid science with new technologies being developed constantly. With in a short period of time the practice of photogrammetry has changed from Analog world to Digital. For the past 5 decades, conventional practice has been to fly aerial photography, manually process the negatives, diapositives, contacts and prints, and laboriously view the stereo images and capture features and topography. Within the last one decade the advancement in computer technology, use of digital cameras, and ever-more high resolution remote sensing satellite images have allowed firms like Infotech to use the latest technologies and serve various organizations in the segments of Utility Mangement, Natural Resource Inforamtion, Decision making systems e.t.c The fundamental aim of any photogrammetry technology is to firmly establish a geometric relationship between an object on the ground and an image.
Transformation of Digital Photogrammetry with the fast moving world: Change of Technology Trends:
Aerial Triangulation – use of Automatic AT with Bingo / Aerosys bundle adjustments for precise accuracies.
Basic photogrammetry is to use Aerial Films – The present trend is to use Digital images such as DMC, ADS40 or Video sensors.
Collection of DTM points with Breaklines is a process for creation of Terrain models – The present trend is to use LIDAR data for generation of Contours and Orthos and as well use of advanced Automatic DEM generation process with latest software.
Urban planning and change detection studies use to spent lot of money on re collecting the Terrain data and Ground control points, now its been given name called Second Generation Orthos where all the existing information will be used for creation of new Data Sets with update information.
For urban planning, Disaster management and other Natural resource the use of High resolution satellite imagery and RADAR Sat is the recent Trends for the applications.