FIELD: medicine.SUBSTANCE: group of inventions relates to medical equipment, specifically to means of visualizing an observation site using an endoscopic system. Multi-wave endoscopic system for imaging an observation portion marked with fluorescent materials having different colors, comprises a visualization unit configured to obtain image data by polarization of incident light reflected from the viewing portion, in a first direction and a second direction perpendicular to the first direction, dividing the incident light spectrum region polarized in the first direction and the second direction, to a plurality of spectral channels and measuring light intensity for each of the spectral channels, and a computing unit configured to store one fluorescence spectrum extracted from the sample image data obtained by single processing of the viewing portion of each of the fluorescent materials, and configured to separate and output image data obtained in the imaging unit, using one fluorescence spectrum such that each of the fluorescent materials is displayed separately, wherein the computing unit is configured to store an unprocessed fluorescence spectrum extracted from the raw image data obtained by viewing an observation portion not marked with fluorescent materials, and wherein the computing unit is configured to perform a correction to exclude the autofluorescence component contained in the image data obtained in the imaging unit using the untreated fluorescence spectrum. In the second embodiment, the system comprises a beam splitter configured to polarize the incident light reflected from the viewing portion, in a first direction and a second direction perpendicular to the first direction, a first zone filter located on the path of the light beam branched in a first direction and configured to transmit a light beam within a predetermined spectral range, a second zonal filter located on the path of the light beam branched in the second direction, and configured to trans
