Patent ID: 11954766
Assignee: CARL ZEISS MEDITEC AG
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for correcting a shading in a digital image of a three-dimensional observation object obtained with an optical observation device, the optical observation device including a first image sensor and a second image sensor, the first image sensor being arranged in a first partial beam path defined by the optical observation device and the second image sensor being arranged in a second partial beam path defined by the optical observation device, the three-dimensional observation object being illuminated by illumination light having an intensity distribution, and an inhomogeneity in an image brightness being present in the digital image of the three-dimensional observation object, the method comprising:
ascertaining a topography of the three-dimensional observation object;
correcting the inhomogeneity in the image brightness of the digital image based on the topography of the three-dimensional observation object and the intensity distribution of the illumination light;
embodying the optical observation device to record stereoscopic images, the first image sensor being configured to record a first stereoscopic partial image and the second image sensor being configured to record a second stereoscopic partial image;
ascertaining the topography of the three-dimensional observation object based on the first and second stereoscopic partial images; or
ascertaining the topography of the three-dimensional observation object based on a structured illumination and a distortion of a structure of an illumination in the image of the three-dimensional observation object recorded with the structured illumination.