What is the purpose of data overlap in drone data capture for VIM?

• A. To minimize battery use
• B. To confuse alignment
• C. To ensure complete coverage and enable accurate registration
• D. To duplicate data unnecessarily

Answer: (C)

Overlap in drone data capture provides repeated views of the same scene so features appear in more than one image. This shared content lets photogrammetric software find corresponding features across images, which is essential for accurately aligning all photos into one coherent dataset. When images can be matched reliably, the system can register them to a common coordinate system and stitch them into a seamless mosaic or build a precise 3D point cloud. That combination—complete area coverage plus reliable alignment—is why overlap is used. If overlap is too small, gaps and misalignment occur; if it’s too large, you waste flight time, but the key idea is that overlap enables accurate registration and full coverage.