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Weather Conditions for Planning Aerial Surveys

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Weather Conditions for Planning Aerial Surveys

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Questions and Answers

What is camera calibration?

Camera calibration is the process of determining the intrinsic and extrinsic parameters of a camera system.

Define focal length in the context of camera calibration.

Focal length (f) represents the distance from the camera's optical center to the imaging sensor.

What does the principal point (c) define in camera calibration?

The principal point (c) defines the center of the image where the optical axis intersects the imaging sensor.

Explain what extrinsic parameters describe in camera calibration.

Extrinsic parameters describe the spatial location (X, Y, Z) and orientation (ω, φ, κ) of the camera in the coordinate system. Signup and view all the answers

What is radial distortion in the context of lens distortion?

Radial distortion is caused by imperfections in the lens, leading to distortion towards the edges of the image. Signup and view all the answers

How does tangential distortion occur in camera systems?

Tangential distortion results from misalignments between the lens and the image sensor. Signup and view all the answers

What are calibration grids/patterns used for in camera calibration?

Calibration grids/patterns are used with known features to refine camera parameters. Signup and view all the answers

Explain bundle adjustment as a calibration method.

Bundle adjustment involves refining camera parameters and 3D coordinates of ground points simultaneously. Signup and view all the answers

How does accurate camera calibration contribute to flight plan evaluation techniques?

Accurate camera calibration enhances the accuracy of photogrammetric measurements. Signup and view all the answers

Why is precise determination of the camera parameters important in flight plans?

Precise camera parameters reduce errors in image orientation and 3D reconstruction in flight planning. Signup and view all the answers