Calibration involves deriving various parameters crucial for accurate photogrammetric processing. This question focuses on camera calibration using the Agisoft Metashape software. The calibration process will encompass statistical and graphical assessments of the results, considering factors such as nominal focal length, pixel size, and the impact of calibration parameters, especially radial distortion, on ground coordinates and image scale.

Task Description:

$1.$Pre$-$calibration Preparation:

$$ Source the following details for your camera:

$$ Nominal Focal Length in mm

$$ Pixel size in mm

$2.$Calibration Process:

$$ Utilise the Agisoft Metashape software for camera calibration.

$$ Follow the provided video tutorial on accessing the software.

$$ Adhere to Agisoft Guidelines for Calibration.

$3.$Initial Calibration and Results:

$$ Run the initial calibration with the $9-$image set.

$$ Analyse the calibration results, focusing on coefficients such as focal length, principal point coordinates, distortion coefficients, and affinity$/$non$-$orthogonality coefficients.

$4.$Checking and Corrections:

$$ Check each image for corrected corners of the chessboard.

$$ Evaluate the results for greyed corner colours indicating misalignment.

Consider deleting or re$-$imaging if there are significant misalignments.

$5.$Comparison and Analysis:

$$ Conduct calibrations for other sets $(3,6,12$ images$).$

$$ Examine residuals and radial distortion graphs in Agisoft Metashape.

$$ Compare calibrated focal length with the manufacturer$$s specification.

Results and Conclusion: Compile a comprehensive discussion detailing the calibration process, the impact of the number of images on calibration results, and an analysis of the derived parameters. Discuss the practical implications of the findings and compare them against the manufacturer's specifications for the camera