Abstract: A method and a system for calibrating cameras of a multichannel medical visualization system, including capturing a capturing region respectively imaged via channels of the multichannel medical visualization system by a respective camera, determining a magnification center for each of the channels, setting at least two magnification levels of a common mechanical magnification optical unit, identifying an image region which does not move or which moves the least across the magnification levels for each of the channels in image representations which are captured, and, proceeding from the respectively determined magnification centers, defining an image portion for each of the channels in the captured image representations with the respectively identified magnification center as the center, and restricting an output of the captured image representations at all magnification levels to the image portion defined for the respective channel.

Abstract: The present disclosure relates to a method of medical calibration, including the method steps of: capturing an image representation of a medical marker and of a medical instrument connected therewith; determining a spatial pose of the medical marker on the basis of the image representation; determining a first position of a tracking point of the medical instrument on the basis of the determined spatial pose and on the basis of information relating to a spatial pose relationship between medical marker and tracking point, and determining a second position of the tracking point on the basis of the captured image representation; determining a deviation between the first position and the second position; adjusting the information relating to the spatial pose relationship between medical marker and tracking point on the basis of the determined deviation.

Abstract: The present disclosure relates to a method of medical navigation including the method steps of: capturing a first image representation of a medical marker in a first perspective; capturing a second image representation of the medical marker in a second perspective; determining a three-dimensional representation of the medical marker on the basis of the first image representation and the second image representation; capturing a third image representation of the medical marker; and determining a spatial pose of the medical marker on the basis of a comparison of the third image representation and the three-dimensional representation of the medical marker. The present disclosure further relates to a medical navigation system, to a computer program and to the use of a three-dimensional representation of a medical marker for registering a medical instrument, a patient and/or a piece of medical equipment.

Abstract: The invention relates to a method for adjusting and/or calibrating a medical microscope, the following being implemented for at least one observer beam path of the medical microscope: capturing respective image representations of an object at different magnification levels of a zoom optical unit, and determining a zoom center using the captured image representations as a starting point, and i) capturing respective further image representations at different axis positions of at least one linear or rotational movement axis of the medical microscope, a rotation of the capture device relative to the at least one linear or rotational movement axis being determined using the captured further image representations as a starting point, and/or ii) capturing respective further image representations of the object in different focal planes and/or at different working distances in the case of an off-centered imaging optical unit, a rotation of the capture device being determined using the captured further image representa

Abstract: A method for creating a camera model for a camera of a surgical microscope includes positioning a calibration object in an initial pose in an observation region of the camera, determining a pose delta for reaching a first pose for the calibration object in a measurement space of the camera starting from the initial pose, positioning the calibration object in the first pose in accordance with the determined pose delta, making a recording of the calibration object in the first pose with the camera, positioning the calibration object in at least one further pose, making a recording of the calibration object in the at least one further pose, and creating a camera model based on the recordings made, the first pose and the at least one further pose being chosen with a distribution in the measurement space such that a camera model is obtained which represents the entire measurement space.