Photogrammetric parallax — contributors to measured parallax on a photograph The stereoscopic parallax of a point measured on overlapping aerial photographs is influenced by which factors?

Introduction / Context:
Parallax is the apparent displacement of image points between two overlapping photos and is central to height determination in photogrammetry.

Given Data / Assumptions:

• A standard vertical aerial photography setup with overlap.
• Rigid camera geometry with known focal length.

Concept / Approach:

Parallax p is commonly related by p ≈ (B f)/(H − h), where B is air base, f is focal length, H is flying height above datum, and h is ground elevation. Thus, each listed factor directly influences measured parallax values.

Step-by-Step Solution:

Verification / Alternative check:

Analytical stereotriangulation models and mapping camera geometry yield the same dependencies.

Why Other Options Are Wrong:

• Each single factor is indeed influential; the comprehensive option is therefore correct.

Common Pitfalls:

• Confusing photo base (on image) with air base (in space); both relate via scale.

Final Answer:

All of the above.