Basics of Photogrammetry 1

What is the concept of depth perception informed by in photogrammetry?

Relative sizes and hidden objects.

Stereoscopic parallax is defined as __________.

The apparent displacement in the position of an object due to a shift in the position of observation.

What are stereo aerial photos obtained from?

Two separate camera locations capturing vertical photos.

Define automatic tie points in photogrammetry.

Software-generated connections between unique keypoints found in overlapping images.

What does a greater parallactic angle indicate?

That the object is closer.

What is the ideal image content for photogrammetry?

Heterogeneous, non-reflective, static scenes with simple geometry.

What is the relationship between x-parallax and elevation?

The parallax of a point is directly related to its elevation.

Describe the traditional approach to photogrammetry.

Involves hard copy/soft copy stereoplotter with manual workflows.

List the components of the Pix4D approach.

RayCloud and automated processes that leverage modern computing power.

What is the importance of overlapping aerial photographs?

It allows for measurement of stereoscopic parallax and ensures image quality.