Aerial Triangulation & Bundle Adjustment Flashcards
6 cards from real Certified Photogrammetrist practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Aerial Triangulation & Bundle Adjustment flashcards as text
What is the primary purpose of aerial triangulation in photogrammetry?
Answer: To determine the exterior orientation parameters of photographs without ground control at every photo
Aerial triangulation determines exterior orientation parameters by using a network of tie points and sparse ground control, eliminating the need for ground control at every photograph.
In bundle adjustment, what is minimized during the least-squares solution?
Answer: The sum of squared residuals of image coordinate measurements
Bundle adjustment minimizes the sum of squared residuals of image coordinate measurements, simultaneously solving for camera positions, orientations, and object point coordinates.
What are tie points in aerial triangulation?
Answer: Points measured in overlapping images that link photos together without known ground coordinates
Tie points are image features measured in overlapping photographs that geometrically connect the photo block without requiring ground-surveyed coordinates.
Which type of ground control point provides both horizontal position and elevation?
Answer: Full control (3D)
Full control points (3D) provide X, Y, and Z coordinates, fully constraining the photogrammetric network in all three dimensions.
What does the term 'block of photographs' refer to in aerial triangulation?
Answer: A collection of overlapping photographs covering an entire project area
A block of photographs is the entire collection of overlapping images that covers a mapping project area, processed together in a single triangulation solution.
Self-calibrating bundle adjustment simultaneously solves for which additional unknowns?
Answer: Camera interior orientation parameters (additional parameters)
Self-calibrating bundle adjustment adds camera interior orientation parameters—such as principal point offset, radial distortion, and decentering distortion—as additional unknowns in the solution.
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