Embedded Files
For data analysis purposes, all calibration parameters calculated for the cameras used in HoverCal and ProtoCal, will be saved in a folder for easier access. This page serves as a help to create the files to save those parameters.
Folder
Folder
The camera parameters files are available in /storage/drone/camera_calibration/camera_parameters/ folder at Zeus. If you don't have access or can't download the data, please ask for permissions to the administrator.
Filename
Filename
The calibration data are saved in .txt files, with the name indicating date of the calibration, serial number of the device and calibration method.
<devicemodel>-<serialnumber>-<date>-<calibrationmethod>.txt
E.g:
DSCRX0M2-3171074-20231115-wall.txt
Device Model: DSCRX0M2
Device Serial number: 3171074
Calibration date: 2023-11-15
Calibration method: Wall
The camera model and serial number of the device can be found anywhere on it depending on the device. For example, for the Sony RX0-II camera, both values can be found at the bottom of the camera:
File structure
File structure
The structure of the file, includes information from the device, calibration and other comments. Then only the matrix parameters and distortion coefficient are included.
Camera identification
Camera identification
cam_model: Commercial name of the camera. e.g: Sony RX0-II
cam_model_serial: Product name of the camera. e.g: DSCRX0M2
cam_serial_no: Serial number of the camera. e.g: 3171074
cam_name: Internal name of the camera. e.g: AIUC_Cam1
Calibration information
Calibration information
date: Date when the calibration was realized. e.g: 2023-11-15
method: Name of the method used to calibrate the camera. e.g: wall, chessboard, circleboard, drone-FLY606
comments: A short description of the calibration process, indicating important details, such as external devices used, location, data acquisition, etc.
Calibration parameters
Calibration parameters
Calibration parameters are saved per element, so for the camera matrix and distortion coefficient vector models, they have to be reconstructed.
Camera matrix parameters:
fx, fy: Focal length.
cx, cy: Optical center.
Distortion coefficients:
k1, k2, k3: Radial distortion coefficients.
p1, p2: Tangential distortion coefficients.
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