This field is part of the schema "image FAIR Digital Object": An iFDO file is a human- and machine-readable file format collecting metadata of an entire image set, without including the actual image data, only references to it through persistent identifiers.


descriptionInformation required to specify the camera calibration model. Details given in properties.


propertiescalibration-model-type (string): e.g.: rectilinear air, rectilinear water, fisheye air, fisheye water, other
calibration-focal-length-xy-pixel (array): 2D focal length in pixels
calibration-principal-point-xy-pixel (array): 2D principal point of the calibration in pixels (top left pixel center is 0,0, x right, y down)
calibration-distortion-coefficients (array): rectilinear: k1, k2, p1, p2, k3, k4, k5, k6, fisheye: k1, k2, k3, k4
calibration-approximate-field-of-view-water-xy-degree (array): Proxy for pixel to meter conversion, and as backup
calibration-model-extra-description (string): Explain model, or if lens parameters are in mm rather than in pixel