Ortho- and Stereophotos

Ortho- and Stereophotos

What are ortho and stereophoto’s exactly?

An orthophoto is an aerial photograph taken from our aircraft in which the camera is pointed perpendicularly downwards. By taking multiple photos from the air and with a certain overlap, the photos are matched together. The GNSS-IMU system in the aircraft ensures that each photolocation is accurately captured. With this information, the aerial triangulation of the aerial photographs is carried out. By means of this aerial triangulation, the orthophoto is fitted into the coordinate system. This integration ensures that it is possible to carry out surveying measurements in an orthophoto.

Wat are they used for?

Many municipalities and cities use these photos to record the area. The photos are metrically corrected and therefore suitable for mapping. Kavel 10 has large frame cameras that can quickly win large areas with low ground resolutions up to 1.5 cm ground resolution.

What kind of products will be delivered?

What are stereo photo’s?

From the orthophotos we can also supply stereo products. A stereo photo product is a dataset in which all photos with a sideways overlap of 30% and forward overlap of 60% have flown. Because the objects in a photo are visible in multiple photos, it is possible to perform very accurate height measurements and mappings for BGT and BAG, among other things.

Near Infrared (NIR)

Based on the loose perpendicular photos taken with our aerial photo cameras, we make ortho mosaics. These ortho mosaics are processed by means of a software process into one seamless photograph. By planning the survey with an overlap a metrically correct product of an area is produced. Often these are municipalities, provinces or other larger areas. These photos can be used as a basis for GIS packages or AutoCAD.

Near Infrared (NIR)

Our aerial cameras are equipped with a NIR Infrared band. This band, which is available in addition to the usual RGB (red, green, blue) band, takes recordings in the part of the wavelength that is not visible to the human eye. NIR images are mainly used to gain insight into the quality of crops. The NIR band is translated by post-processing into a CIR (Color Infrared photo). This makes it a visible image to the human eye.

Do you have any questions?

Call 0512 – 57 00 71 or send an email to richard@kavel10.nl

Richard Brouwer

Project manager and owner Kavel 10