Patent ID: 11914130
Assignee: VENTANA MEDICAL SYSTEMS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A method for acquiring focused images of a biological specimen disposed on a microscope slide using a microscope having an optical system and a digital color camera, the method comprising:
determining an in-focus focal base plane value for each of a plurality of slide positions for the biological specimen disposed on the microscope slide;
computing an adjusted focus plane value for each of red, green, and blue color channels for each of the plurality of the slide positions, wherein each adjusted focus plane value is computed from (i) the determined in-focus focal base plane value for each of the plurality of identified slide positions, and (ii) offset values for the red, green, and blue color channels for each of the plurality slide positions;
characterizing chromatic aberration present in the optical system as a Z-offset based on the adjusted focus plane value in each of the red, green, and blue channels of the digital color camera; and
scanning a microscope slide in a manner to reduce the effect of the characterized chromatic aberration by obtaining image data from the red, green, and blue channels in accordance with the Z-offsets.