Oblique collection generates ve s-shaped routes in the mapping area, respectively
controlling the gimbal to collect orthophoto and oblique photos in 5 dierent directions,
which can be used to make real 3D models.
Smart Oblique and Terrain Follow can be enabled in the area route.
Smart Oblique
Smart Oblique is an innovative oblique photography solution. By automatically controlling
the gimbal to capture images from multiple angles, it greatly improves operational
eciency.
• During Ortho Collection, with Smart Oblique enabled, the gimbal supports
simultaneous lateral capturing, reducing the ight route density and increasing data
collection eciency.
• During Oblique Collection, with Smart Oblique enabled, the gimbal can capture
images in ve directions simultaneously. The aircraft only needs to y one ight route
to collect the orthophoto and oblique photos required for 3D reconstruction.
Terrain follow
When collecting data in areas with large elevation dierences, such as mountainous
areas, Terrain Follow allows the aircraft to adjust the ight altitude following the changes
in the terrain. Terrain Follow ensures that the relative height of the aircraft and the
ground below remains unchanged so that the Ground Sampling Distance (GSD) of the
photos collected in each area is consistent, improving the accuracy of mapping data while
ensuring ight safety.
• Select AGL for the Altitude Mode to enable Terrain Follow.
Real-Time Follow
Real-Time Follow does not require DSM les. The aircraft vision system detects the terrain
uctuations ahead in real time during the ight. It is recommended to use this function in
areas where the terrain slope is less than 75° and the lighting condition and environment
are suitable for the vision system.
When performing a mapping task while Real-Time Follow is enabled, the aircraft altitude
above ground level (AGL) and the terrain trend ahead of the aircraft will be displayed in
the camera view.
DJI Matrice 4 Series User Manual
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