At TheDraftRack., we generate Orthophoto with pixel sizes of 10cm, 20cm, 40 cm. We also specialize in working with RGB & Infrared datasets as well as imagery. We follow strict standards for achieving survey grade accuracy by following ASPRS and NSPS standards
Orthophoto Processing
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An orthophotograph is a mathematically and geographically rectified aerial color photograph that can be placed on a plan. The process of creating an orthophotograph entails correcting exposure distortions induced by ground surface relief. Digital orthophotos are used as maps, as well as a combination of other mapping products such as DTM and contours, for visual identification.
We specialize in working with (certified & established) Image Processing algorithms – (PIX4d in our case ) to create a digital Orthophoto that most closely matches the resolution and the continual tone of the original aerial image. Color and contrast matching, as well as feathering techniques, are used to create an almost seamless mosaic. To supplement the original orthoimages, many images can be mosaicked and resampled to provide an overview image file. Reliability is measured simply by comparing the fixed position of the said ground control point to the true coordinate of the points.
Our process is based on the PIX4D work flow
- Feature Identification
- Feature Matching
- Geolocation GPS/GCP – Model location based on geolocation
- Reflection & Index Map
- DSM/DTM – Computation of volume
- Orthomosaic – Focuses on removing distortions
- Final CAD & drawings with contours
Software Expertise
Pix4D
Land Survey CAD Drafting | Land Development Design Drafting
Lets work together!
TheDraftRack © 2025
We seek to take the expertise acquired over the years & keep working diligently to adapt ourselves to the growing demands of the ever-so-changing AEC industry. The process is to learn – replicate – learn – replicate.
