Digital Photogrammetry

Digital photogrammetry is the art of using computers to obtain the measurements of objects in a photograph. It typically involves analyzing one or more existing photographs or videos with photogrammetric software to determine spatial relationships. Used to create topographical maps, it may also be useful in a variety of industries.

Naksha Tech’s team of Photogrammettrist create quality Vector data and ortho-photos with assured spatial accuracies. To achieve completeness and accuracy of each project, Naksha tech uses specific quality control and quality assurance team to meet client needs. They make sure their outputs are done right with an extensive quality control methodology.
We provide the following photogrammetric offering to meet our clients’ needs.
Aerial triangulation

• DTM/DEM
• Digital Orthophotography
• Large scale and small Scale mapping
• 3D city Modeling

Digital Orthophotography:

• An orthophotograph is an aerial color photograph geometrically and geographically corrected to be superimposed on a plan. The production of orthophotograph consists of correcting the distortions of the exposures caused by ground surface relief. Digital Orthophoto are used as maps, for visual identification and also with combination of other mapping products like DTM and contours.
• We generate digital Orthophoto that most closely achieves the resolution of the continuous tone and original aerial image. We apply a variety of image enhancement and edge sharpening routines using special Image processing techniques. The process involves colour / contrast matching and feathering techniques to ensure a virtually seamless mosaic. Many images can be mosaic ked and re-sampled to produce an overview image file to supplement the original orthoimages. Accuracy is measured by comparing the rectified position of ground control point to the true coordinates of the point.
• We create Orthophoto with different pixel sizes. We work on RGB and Four band imagery which includes; Orthophoto generation / Ortho rectification, Seam line Editing, Color Balancing, Creating Mosaics, Edge Matching.

Digital Photogrammetry Products:

• DTM
• Ortho Photos
• Ortho photos Seam Line
• 3 Dimensional Maps
• Contours