Orthophoto Generation

Orthophoto Generation

An orthophoto is an aerial/satellite photograph that has been geometrically corrected or 'ortho-rectified' such that the scale of the photograph is uniform and utilised in the same manner as a map. An ortho-photograph can be used to measure true distances of features within the photograph.

Our digital orthophotography output provides valuable information about the terrain from which true distances, angles and areas can be measured. The ortho photos are merged using ortho software and seam lines are digitised, to ensure a seamless mosaic of the entire project area. Orthophoto mosaics are created by merging or tiling together orthophotos, which are then clipped according to the specified dimensions.

The orthorectification of remote sensing imagery unites relief effects corrections and geo-referencing with high location accuracy. We guarantee the best geo-referencing and orthorectified output within your budget, meeting your delivery time.

Work Snippet

Enfragy has more than 12 years of work experience on Orthophoto Generation. We have successfully processed more than 6,900 sq. km of data covering more than 14 cities.

Advantages

Orthophotos provide highly detailed coverage combined with the benefits of a map, including uniform scale and true geometry.

Challenges

  • All topographic details cannot be easily seen on the orthophoto maps.
  • Understanding and interpretability of an orthophoto map is closely connected to the photographic interpretation capabilities of the map users.

Case Study: LiDAR for National Remote Sensing Centre, Indian Space Research Organization (ISRO)

  • Godavari Basin — Andhra Pradesh (177 sq. km)
  • Tapi River — Gujarat (149 sq. km)
  • Indian National Centre for Ocean Information Services (INCOIS) – Gujarat and Maharashtra (1061 sq. km)
  • West Bengal (709 sq. km)
  • Assam Phase 2 (1,080 sq. km)
  • Orissa and West Bengal (400 sq. km)
  • Godavari (285 sq. km)
  • Assam (1,036 sq. km)
  • Bihar (1,208 sq. km)
  • Orissa (570 sq. km)
  • Water and Power Consultancy Services Ltd. (WAPCOS) (71 sq. km)
  • Water Resources Development Organization (WRDO) (203 sq. km)